From 442862f0a3c23dcbfacddd4e841e0b35cc262e3d Mon Sep 17 00:00:00 2001
From: Raza Mehdi <srmk@outlook.com>
Date: Sat, 30 Sep 2023 22:25:14 +0500
Subject: [PATCH] Add selector function for json_encode.

---
 .github/workflows/static-analysis.yml         |  4 +--
 .github/workflows/tests.yml                   |  2 +-
 Dockerfile                                    |  2 +-
 composer.json                                 |  1 +
 src/Services/Str.php                          |  4 +--
 src/Traits/JsonDecodeSelector.php             | 16 ----------
 src/Traits/JsonEncodeDecodeSelector.php       | 30 +++++++++++++++++++
 src/Traits/PayPalRequest.php                  |  2 +-
 tests/MockClientClasses.php                   |  9 ++----
 tests/Unit/AdapterTest.php                    |  2 +-
 tests/Unit/Client/BillingPlansTest.php        | 14 ++++-----
 tests/Unit/Client/CatalogProductsTest.php     |  8 ++---
 tests/Unit/Client/DisputeActionsTest.php      |  6 ++--
 tests/Unit/Client/DisputesTest.php            |  6 ++--
 tests/Unit/Client/IdentityTest.php            |  2 +-
 tests/Unit/Client/InvoicesSearchTest.php      |  2 +-
 tests/Unit/Client/InvoicesTemplatesTest.php   | 10 +++----
 tests/Unit/Client/InvoicesTest.php            | 28 ++++++++---------
 tests/Unit/Client/OrdersTest.php              |  2 +-
 tests/Unit/Client/PartnerReferralsTest.php    |  4 +--
 .../Unit/Client/PaymentAuthorizationsTest.php |  8 ++---
 tests/Unit/Client/PaymentCapturesTest.php     |  4 +--
 .../PaymentExperienceWebProfilesTest.php      | 12 ++++----
 tests/Unit/Client/PaymentRefundsTest.php      |  2 +-
 tests/Unit/Client/PayoutsTest.php             |  8 ++---
 tests/Unit/Client/ReferencedPayoutsTest.php   |  8 ++---
 tests/Unit/Client/ReportingTest.php           |  4 +--
 tests/Unit/Client/SubscriptionsTest.php       | 18 +++++------
 tests/Unit/Client/TrackersTest.php            |  6 ++--
 tests/Unit/Client/WebHooksEventsTest.php      |  8 ++---
 tests/Unit/Client/WebHooksTest.php            | 12 ++++----
 .../Unit/Client/WebHooksVerificationTest.php  |  2 +-
 tests/Unit/ClientTest.php                     |  2 +-
 33 files changed, 130 insertions(+), 118 deletions(-)
 delete mode 100644 src/Traits/JsonDecodeSelector.php
 create mode 100644 src/Traits/JsonEncodeDecodeSelector.php

diff --git a/.github/workflows/static-analysis.yml b/.github/workflows/static-analysis.yml
index aabc3f6c..1c606e00 100644
--- a/.github/workflows/static-analysis.yml
+++ b/.github/workflows/static-analysis.yml
@@ -7,7 +7,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        php-versions: ['7.0', '7.1', '7.2', '7.3', '7.4']
+        php-versions: ['7.1', '7.2', '7.3', '7.4']
     steps:
     - name: Checkout
       uses: actions/checkout@v2
@@ -28,7 +28,7 @@ jobs:
     - name: Install Composer dependencies
       env:
         PHP_VERSION: ${{ matrix.php-versions }}
-      run: composer install --no-progress --prefer-dist --optimize-autoloader $(if [ "$PHP_VERSION" == "8.0" || "$PHP_VERSION" == "8.1" ]; then echo "--ignore-platform-reqs"; fi;)    
+      run: composer install --no-progress --prefer-dist --optimize-autoloader
     - name: Run type checking analysis
       env:
         PHP_VERSION: ${{ matrix.php-versions }}
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index a84706f7..b5447ee2 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -32,7 +32,7 @@ jobs:
     - name: Install Composer dependencies
       env:
         PHP_VERSION: ${{ matrix.php-versions }}
-      run: composer install --no-progress --prefer-dist --optimize-autoloader $(if [ "$PHP_VERSION" == "8.0" || "$PHP_VERSION" == "8.1" ]; then echo "--ignore-platform-reqs"; fi;)    
+      run: $(if [ "$PHP_VERSION" == "7.0" ]; then composer config --no-plugins allow-plugins.kylekatarnls/update-helper && fi;) composer install --no-progress --prefer-dist --optimize-autoloader
     - name: Run tests with code coverage
       env:
         PHP_VERSION: ${{ matrix.php-versions }}
diff --git a/Dockerfile b/Dockerfile
index c494e727..e2780e7e 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM srmklive/docker-php-cli:7.2
+FROM srmklive/docker-php-cli:7.1
 
 LABEL maintainer="Raza Mehdi<srmk@outlook.com>"
 
diff --git a/composer.json b/composer.json
index 0de606cd..6415ce69 100644
--- a/composer.json
+++ b/composer.json
@@ -26,6 +26,7 @@
     "nesbot/carbon": "~1.0|~2.0"
   },
   "require-dev": {
+    "phpstan/phpstan": "~0.1|~1.0",
     "phpunit/phpunit": "^5.7|^6.0|^7.0|^8.0",
     "symfony/var-dumper": "~3.0|~4.0|~5.0"
   },
diff --git a/src/Services/Str.php b/src/Services/Str.php
index 96f9bc4b..105f9214 100644
--- a/src/Services/Str.php
+++ b/src/Services/Str.php
@@ -3,11 +3,11 @@
 namespace Srmklive\PayPal\Services;
 
 use GuzzleHttp\Utils;
-use Srmklive\PayPal\Traits\JsonDecodeSelector;
+use Srmklive\PayPal\Traits\JsonEncodeDecodeSelector;
 
 class Str extends \Illuminate\Support\Str
 {
-    use JsonDecodeSelector;
+    use JsonEncodeDecodeSelector;
 
     /**
      * Determine if a given value is valid JSON.
diff --git a/src/Traits/JsonDecodeSelector.php b/src/Traits/JsonDecodeSelector.php
deleted file mode 100644
index 357c40d2..00000000
--- a/src/Traits/JsonDecodeSelector.php
+++ /dev/null
@@ -1,16 +0,0 @@
-<?php
-
-namespace Srmklive\PayPal\Traits;
-
-trait JsonDecodeSelector
-{
-    /**
-     * Decide the function to use for decoding json.
-     *
-     * @return string
-     */
-    protected function jsonDecodeFunction(): string
-    {
-        return class_exists(\GuzzleHttp\Utils::class) ? '\GuzzleHttp\Utils::jsonDecode' : '\GuzzleHttp\Utils::json_decode';
-    }
-}
diff --git a/src/Traits/JsonEncodeDecodeSelector.php b/src/Traits/JsonEncodeDecodeSelector.php
new file mode 100644
index 00000000..90c93b29
--- /dev/null
+++ b/src/Traits/JsonEncodeDecodeSelector.php
@@ -0,0 +1,30 @@
+<?php
+
+namespace Srmklive\PayPal\Traits;
+
+trait JsonEncodeDecodeSelector
+{
+    /**
+     * Decide the function to use for decoding json.
+     *
+     * @return string
+     */
+    protected function jsonEncodeFunction(): string
+    {
+        return class_exists(\GuzzleHttp\Utils::class) &&
+        method_exists(\GuzzleHttp\Utils::class, 'jsonEncode') ?
+            '\GuzzleHttp\Utils::jsonEncode' : '\GuzzleHttp\json_encode';
+    }
+
+    /**
+     * Decide the function to use for decoding json.
+     *
+     * @return string
+     */
+    protected function jsonDecodeFunction(): string
+    {
+        return class_exists(\GuzzleHttp\Utils::class) &&
+        method_exists(\GuzzleHttp\Utils::class, 'jsonDecode') ?
+            '\GuzzleHttp\Utils::jsonDecode' : '\GuzzleHttp\json_decode';
+    }
+}
diff --git a/src/Traits/PayPalRequest.php b/src/Traits/PayPalRequest.php
index adfbe3eb..b47a2809 100644
--- a/src/Traits/PayPalRequest.php
+++ b/src/Traits/PayPalRequest.php
@@ -6,7 +6,7 @@
 
 trait PayPalRequest
 {
-    use JsonDecodeSelector;
+    use JsonEncodeDecodeSelector;
     use PayPalHttpClient;
     use PayPalAPI;
     use PayPalExperienceContext;
diff --git a/tests/MockClientClasses.php b/tests/MockClientClasses.php
index 45d446af..4a741ae6 100644
--- a/tests/MockClientClasses.php
+++ b/tests/MockClientClasses.php
@@ -10,11 +10,11 @@
 use GuzzleHttp\Utils;
 use Psr\Http\Message\ResponseInterface;
 use Srmklive\PayPal\Services\PayPal as PayPalClient;
-use Srmklive\PayPal\Traits\JsonDecodeSelector;
+use Srmklive\PayPal\Traits\JsonEncodeDecodeSelector;
 
 trait MockClientClasses
 {
-    use JsonDecodeSelector;
+    use JsonEncodeDecodeSelector;
 
     private function mock_http_client($response): HttpClient
     {
@@ -22,7 +22,7 @@ private function mock_http_client($response): HttpClient
             new HttpResponse(
                 200,
                 [],
-                ($response === false) ? '' : Utils::jsonEncode($response)
+                ($response === false) ? '' : $this->jsonEncodeFunction()($response)
             ),
         ]);
 
@@ -58,9 +58,6 @@ private function mock_http_request($expectedResponse, $expectedEndpoint, $expect
     private function mock_client($expectedResponse, $expectedMethod, $token = false, $additionalMethod = null)
     {
         $set_method_name = 'setMethods';
-        if (strpos(phpversion(), '8.1') !== false || strpos(phpversion(), '8.2') !== false) {
-            $set_method_name = 'onlyMethods';
-        }
 
         $methods = [$expectedMethod, 'setApiCredentials'];
         $methods[] = ($token) ? 'getAccessToken' : '';
diff --git a/tests/Unit/AdapterTest.php b/tests/Unit/AdapterTest.php
index 9d7a4420..358f40e5 100644
--- a/tests/Unit/AdapterTest.php
+++ b/tests/Unit/AdapterTest.php
@@ -32,7 +32,7 @@ public function it_throws_exception_if_invalid_credentials_are_provided()
     public function it_throws_exception_if_invalid_mode_is_provided()
     {
         $this->expectException(\RuntimeException::class);
-        $this->expectErrorMessage('Invalid configuration provided. Please provide valid configuration for PayPal API. You can also refer to the documentation at https://srmklive.github.io/laravel-paypal/docs.html to setup correct configuration.');
+        $this->expectExceptionMessage('Invalid configuration provided. Please provide valid configuration for PayPal API. You can also refer to the documentation at https://srmklive.github.io/laravel-paypal/docs.html to setup correct configuration.');
 
         $credentials = $this->getMockCredentials();
         $credentials['mode'] = '';
diff --git a/tests/Unit/Client/BillingPlansTest.php b/tests/Unit/Client/BillingPlansTest.php
index 77480d20..628947a1 100644
--- a/tests/Unit/Client/BillingPlansTest.php
+++ b/tests/Unit/Client/BillingPlansTest.php
@@ -29,7 +29,7 @@ public function it_can_create_a_billing_plan()
             'json' => $this->createPlanParams(),
         ];
 
-        $mockHttpClient = $this->mock_http_request(Utils::jsonEncode($expectedResponse), $expectedEndpoint, $expectedParams, 'post');
+        $mockHttpClient = $this->mock_http_request($this->jsonEncodeFunction()($expectedResponse), $expectedEndpoint, $expectedParams, 'post');
 
         $this->assertEquals($expectedResponse, $this->jsonDecodeFunction()($mockHttpClient->post($expectedEndpoint, $expectedParams)->getBody(), true));
     }
@@ -48,7 +48,7 @@ public function it_can_list_billing_plans()
             ],
         ];
 
-        $mockHttpClient = $this->mock_http_request(Utils::jsonEncode($expectedResponse), $expectedEndpoint, $expectedParams, 'get');
+        $mockHttpClient = $this->mock_http_request($this->jsonEncodeFunction()($expectedResponse), $expectedEndpoint, $expectedParams, 'get');
 
         $this->assertEquals($expectedResponse, $this->jsonDecodeFunction()($mockHttpClient->get($expectedEndpoint, $expectedParams)->getBody(), true));
     }
@@ -68,7 +68,7 @@ public function it_can_update_a_billing_plan()
             'json' => $this->updatePlanParams(),
         ];
 
-        $mockHttpClient = $this->mock_http_request(Utils::jsonEncode($expectedResponse), $expectedEndpoint, $expectedParams, 'patch');
+        $mockHttpClient = $this->mock_http_request($this->jsonEncodeFunction()($expectedResponse), $expectedEndpoint, $expectedParams, 'patch');
 
         $this->assertEquals($expectedResponse, $this->jsonDecodeFunction()($mockHttpClient->patch($expectedEndpoint, $expectedParams)->getBody(), true));
     }
@@ -87,7 +87,7 @@ public function it_can_show_details_for_a_billing_plan()
             ],
         ];
 
-        $mockHttpClient = $this->mock_http_request(Utils::jsonEncode($expectedResponse), $expectedEndpoint, $expectedParams, 'get');
+        $mockHttpClient = $this->mock_http_request($this->jsonEncodeFunction()($expectedResponse), $expectedEndpoint, $expectedParams, 'get');
 
         $this->assertEquals($expectedResponse, $this->jsonDecodeFunction()($mockHttpClient->get($expectedEndpoint, $expectedParams)->getBody(), true));
     }
@@ -106,7 +106,7 @@ public function it_can_activate_a_billing_plan()
             ],
         ];
 
-        $mockHttpClient = $this->mock_http_request(Utils::jsonEncode($expectedResponse), $expectedEndpoint, $expectedParams, 'post');
+        $mockHttpClient = $this->mock_http_request($this->jsonEncodeFunction()($expectedResponse), $expectedEndpoint, $expectedParams, 'post');
 
         $this->assertEquals($expectedResponse, $this->jsonDecodeFunction()($mockHttpClient->post($expectedEndpoint, $expectedParams)->getBody(), true));
     }
@@ -125,7 +125,7 @@ public function it_can_deactivate_a_billing_plan()
             ],
         ];
 
-        $mockHttpClient = $this->mock_http_request(Utils::jsonEncode($expectedResponse), $expectedEndpoint, $expectedParams, 'post');
+        $mockHttpClient = $this->mock_http_request($this->jsonEncodeFunction()($expectedResponse), $expectedEndpoint, $expectedParams, 'post');
 
         $this->assertEquals($expectedResponse, $this->jsonDecodeFunction()($mockHttpClient->post($expectedEndpoint, $expectedParams)->getBody(), true));
     }
@@ -145,7 +145,7 @@ public function it_can_update_pricing_for_a_billing_plan()
             'json' => $this->updatePlanPricingParams(),
         ];
 
-        $mockHttpClient = $this->mock_http_request(Utils::jsonEncode($expectedResponse), $expectedEndpoint, $expectedParams, 'post');
+        $mockHttpClient = $this->mock_http_request($this->jsonEncodeFunction()($expectedResponse), $expectedEndpoint, $expectedParams, 'post');
 
         $this->assertEquals($expectedResponse, $this->jsonDecodeFunction()($mockHttpClient->post($expectedEndpoint, $expectedParams)->getBody(), true));
     }
diff --git a/tests/Unit/Client/CatalogProductsTest.php b/tests/Unit/Client/CatalogProductsTest.php
index ec277e9b..211c95c8 100644
--- a/tests/Unit/Client/CatalogProductsTest.php
+++ b/tests/Unit/Client/CatalogProductsTest.php
@@ -29,7 +29,7 @@ public function it_can_create_a_product()
             'json' => $this->createProductParams(),
         ];
 
-        $mockHttpClient = $this->mock_http_request(Utils::jsonEncode($expectedResponse), $expectedEndpoint, $expectedParams, 'post');
+        $mockHttpClient = $this->mock_http_request($this->jsonEncodeFunction()($expectedResponse), $expectedEndpoint, $expectedParams, 'post');
 
         $this->assertEquals($expectedResponse, $this->jsonDecodeFunction()($mockHttpClient->post($expectedEndpoint, $expectedParams)->getBody(), true));
     }
@@ -48,7 +48,7 @@ public function it_can_list_products()
             ],
         ];
 
-        $mockHttpClient = $this->mock_http_request(Utils::jsonEncode($expectedResponse), $expectedEndpoint, $expectedParams, 'get');
+        $mockHttpClient = $this->mock_http_request($this->jsonEncodeFunction()($expectedResponse), $expectedEndpoint, $expectedParams, 'get');
 
         $this->assertEquals($expectedResponse, $this->jsonDecodeFunction()($mockHttpClient->get($expectedEndpoint, $expectedParams)->getBody(), true));
     }
@@ -68,7 +68,7 @@ public function it_can_update_a_product()
             'json' => $this->updateProductParams(),
         ];
 
-        $mockHttpClient = $this->mock_http_request(Utils::jsonEncode($expectedResponse), $expectedEndpoint, $expectedParams, 'patch');
+        $mockHttpClient = $this->mock_http_request($this->jsonEncodeFunction()($expectedResponse), $expectedEndpoint, $expectedParams, 'patch');
 
         $this->assertEquals($expectedResponse, $this->jsonDecodeFunction()($mockHttpClient->patch($expectedEndpoint, $expectedParams)->getBody(), true));
     }
@@ -87,7 +87,7 @@ public function it_can_get_details_for_a_product()
             ],
         ];
 
-        $mockHttpClient = $this->mock_http_request(Utils::jsonEncode($expectedResponse), $expectedEndpoint, $expectedParams, 'get');
+        $mockHttpClient = $this->mock_http_request($this->jsonEncodeFunction()($expectedResponse), $expectedEndpoint, $expectedParams, 'get');
 
         $this->assertEquals($expectedResponse, $this->jsonDecodeFunction()($mockHttpClient->get($expectedEndpoint, $expectedParams)->getBody(), true));
     }
diff --git a/tests/Unit/Client/DisputeActionsTest.php b/tests/Unit/Client/DisputeActionsTest.php
index ce460165..8866a054 100644
--- a/tests/Unit/Client/DisputeActionsTest.php
+++ b/tests/Unit/Client/DisputeActionsTest.php
@@ -29,7 +29,7 @@ public function it_can_accept_dispute_claim()
             'json' => $this->acceptDisputeClaimParams(),
         ];
 
-        $mockHttpClient = $this->mock_http_request(Utils::jsonEncode($expectedResponse), $expectedEndpoint, $expectedParams, 'post');
+        $mockHttpClient = $this->mock_http_request($this->jsonEncodeFunction()($expectedResponse), $expectedEndpoint, $expectedParams, 'post');
 
         $this->assertEquals($expectedResponse, $this->jsonDecodeFunction()($mockHttpClient->post($expectedEndpoint, $expectedParams)->getBody(), true));
     }
@@ -49,7 +49,7 @@ public function it_can_accept_dispute_offer_resolution()
             'json' => $this->acceptDisputeResolutionParams(),
         ];
 
-        $mockHttpClient = $this->mock_http_request(Utils::jsonEncode($expectedResponse), $expectedEndpoint, $expectedParams, 'post');
+        $mockHttpClient = $this->mock_http_request($this->jsonEncodeFunction()($expectedResponse), $expectedEndpoint, $expectedParams, 'post');
 
         $this->assertEquals($expectedResponse, $this->jsonDecodeFunction()($mockHttpClient->post($expectedEndpoint, $expectedParams)->getBody(), true));
     }
@@ -69,7 +69,7 @@ public function it_can_acknowledge_item_is_returned_for_raised_dispute()
             'json' => $this->acknowledgeItemReturnedParams(),
         ];
 
-        $mockHttpClient = $this->mock_http_request(Utils::jsonEncode($expectedResponse), $expectedEndpoint, $expectedParams, 'post');
+        $mockHttpClient = $this->mock_http_request($this->jsonEncodeFunction()($expectedResponse), $expectedEndpoint, $expectedParams, 'post');
 
         $this->assertEquals($expectedResponse, $this->jsonDecodeFunction()($mockHttpClient->post($expectedEndpoint, $expectedParams)->getBody(), true));
     }
diff --git a/tests/Unit/Client/DisputesTest.php b/tests/Unit/Client/DisputesTest.php
index e19b8ece..cde084cd 100644
--- a/tests/Unit/Client/DisputesTest.php
+++ b/tests/Unit/Client/DisputesTest.php
@@ -28,7 +28,7 @@ public function it_can_list_disputes()
             ],
         ];
 
-        $mockHttpClient = $this->mock_http_request(Utils::jsonEncode($expectedResponse), $expectedEndpoint, $expectedParams, 'get');
+        $mockHttpClient = $this->mock_http_request($this->jsonEncodeFunction()($expectedResponse), $expectedEndpoint, $expectedParams, 'get');
 
         $this->assertEquals($expectedResponse, $this->jsonDecodeFunction()($mockHttpClient->get($expectedEndpoint, $expectedParams)->getBody(), true));
     }
@@ -48,7 +48,7 @@ public function it_can_partially_update_a_dispute()
             'json' => $this->updateDisputeParams(),
         ];
 
-        $mockHttpClient = $this->mock_http_request(Utils::jsonEncode($expectedResponse), $expectedEndpoint, $expectedParams, 'patch');
+        $mockHttpClient = $this->mock_http_request($this->jsonEncodeFunction()($expectedResponse), $expectedEndpoint, $expectedParams, 'patch');
 
         $this->assertEquals($expectedResponse, $this->jsonDecodeFunction()($mockHttpClient->patch($expectedEndpoint, $expectedParams)->getBody(), true));
     }
@@ -67,7 +67,7 @@ public function it_can_get_details_for_a_dispute()
             ],
         ];
 
-        $mockHttpClient = $this->mock_http_request(Utils::jsonEncode($expectedResponse), $expectedEndpoint, $expectedParams, 'get');
+        $mockHttpClient = $this->mock_http_request($this->jsonEncodeFunction()($expectedResponse), $expectedEndpoint, $expectedParams, 'get');
 
         $this->assertEquals($expectedResponse, $this->jsonDecodeFunction()($mockHttpClient->get($expectedEndpoint, $expectedParams)->getBody(), true));
     }
diff --git a/tests/Unit/Client/IdentityTest.php b/tests/Unit/Client/IdentityTest.php
index 0d1609e9..06d098a1 100644
--- a/tests/Unit/Client/IdentityTest.php
+++ b/tests/Unit/Client/IdentityTest.php
@@ -28,7 +28,7 @@ public function it_can_user_profile_details()
             ],
         ];
 
-        $mockHttpClient = $this->mock_http_request(Utils::jsonEncode($expectedResponse), $expectedEndpoint, $expectedParams, 'get');
+        $mockHttpClient = $this->mock_http_request($this->jsonEncodeFunction()($expectedResponse), $expectedEndpoint, $expectedParams, 'get');
 
         $this->assertEquals($expectedResponse, $this->jsonDecodeFunction()($mockHttpClient->get($expectedEndpoint, $expectedParams)->getBody(), true));
     }
diff --git a/tests/Unit/Client/InvoicesSearchTest.php b/tests/Unit/Client/InvoicesSearchTest.php
index 12504c7f..de212e17 100644
--- a/tests/Unit/Client/InvoicesSearchTest.php
+++ b/tests/Unit/Client/InvoicesSearchTest.php
@@ -29,7 +29,7 @@ public function it_can_search_invoices()
             'json' => $this->invoiceSearchParams(),
         ];
 
-        $mockHttpClient = $this->mock_http_request(Utils::jsonEncode($expectedResponse), $expectedEndpoint, $expectedParams, 'post');
+        $mockHttpClient = $this->mock_http_request($this->jsonEncodeFunction()($expectedResponse), $expectedEndpoint, $expectedParams, 'post');
 
         $this->assertEquals($expectedResponse, $this->jsonDecodeFunction()($mockHttpClient->post($expectedEndpoint, $expectedParams)->getBody(), true));
     }
diff --git a/tests/Unit/Client/InvoicesTemplatesTest.php b/tests/Unit/Client/InvoicesTemplatesTest.php
index ff3c7609..1bfdc5e4 100644
--- a/tests/Unit/Client/InvoicesTemplatesTest.php
+++ b/tests/Unit/Client/InvoicesTemplatesTest.php
@@ -29,7 +29,7 @@ public function it_can_create_invoice_template()
             'json' => $this->mockCreateInvoiceTemplateParams(),
         ];
 
-        $mockHttpClient = $this->mock_http_request(Utils::jsonEncode($expectedResponse), $expectedEndpoint, $expectedParams, 'post');
+        $mockHttpClient = $this->mock_http_request($this->jsonEncodeFunction()($expectedResponse), $expectedEndpoint, $expectedParams, 'post');
 
         $this->assertEquals($expectedResponse, $this->jsonDecodeFunction()($mockHttpClient->post($expectedEndpoint, $expectedParams)->getBody(), true));
     }
@@ -48,7 +48,7 @@ public function it_can_list_invoice_templates()
             ],
         ];
 
-        $mockHttpClient = $this->mock_http_request(Utils::jsonEncode($expectedResponse), $expectedEndpoint, $expectedParams, 'get');
+        $mockHttpClient = $this->mock_http_request($this->jsonEncodeFunction()($expectedResponse), $expectedEndpoint, $expectedParams, 'get');
 
         $this->assertEquals($expectedResponse, $this->jsonDecodeFunction()($mockHttpClient->get($expectedEndpoint, $expectedParams)->getBody(), true));
     }
@@ -67,7 +67,7 @@ public function it_can_delete_an_invoice_template()
             ],
         ];
 
-        $mockHttpClient = $this->mock_http_request(Utils::jsonEncode($expectedResponse), $expectedEndpoint, $expectedParams, 'delete');
+        $mockHttpClient = $this->mock_http_request($this->jsonEncodeFunction()($expectedResponse), $expectedEndpoint, $expectedParams, 'delete');
 
         $this->assertEquals($expectedResponse, $this->jsonDecodeFunction()($mockHttpClient->delete($expectedEndpoint, $expectedParams)->getBody(), true));
     }
@@ -87,7 +87,7 @@ public function it_can_update_an_invoice_template()
             'json' => $this->mockUpdateInvoiceTemplateParams(),
         ];
 
-        $mockHttpClient = $this->mock_http_request(Utils::jsonEncode($expectedResponse), $expectedEndpoint, $expectedParams, 'put');
+        $mockHttpClient = $this->mock_http_request($this->jsonEncodeFunction()($expectedResponse), $expectedEndpoint, $expectedParams, 'put');
 
         $this->assertEquals($expectedResponse, $this->jsonDecodeFunction()($mockHttpClient->put($expectedEndpoint, $expectedParams)->getBody(), true));
     }
@@ -106,7 +106,7 @@ public function it_can_get_details_for_an_invoice_template()
             ],
         ];
 
-        $mockHttpClient = $this->mock_http_request(Utils::jsonEncode($expectedResponse), $expectedEndpoint, $expectedParams, 'get');
+        $mockHttpClient = $this->mock_http_request($this->jsonEncodeFunction()($expectedResponse), $expectedEndpoint, $expectedParams, 'get');
 
         $this->assertEquals($expectedResponse, $this->jsonDecodeFunction()($mockHttpClient->get($expectedEndpoint, $expectedParams)->getBody(), true));
     }
diff --git a/tests/Unit/Client/InvoicesTest.php b/tests/Unit/Client/InvoicesTest.php
index 3b4967f8..59c434bf 100644
--- a/tests/Unit/Client/InvoicesTest.php
+++ b/tests/Unit/Client/InvoicesTest.php
@@ -28,7 +28,7 @@ public function it_can_generate_unique_invoice_number()
             ],
         ];
 
-        $mockHttpClient = $this->mock_http_request(Utils::jsonEncode($expectedResponse), $expectedEndpoint, $expectedParams, 'post');
+        $mockHttpClient = $this->mock_http_request($this->jsonEncodeFunction()($expectedResponse), $expectedEndpoint, $expectedParams, 'post');
 
         $this->assertEquals($expectedResponse, $this->jsonDecodeFunction()($mockHttpClient->post($expectedEndpoint, $expectedParams)->getBody(), true));
     }
@@ -48,7 +48,7 @@ public function it_can_create_a_draft_invoice()
             'json' => $this->createInvoiceParams(),
         ];
 
-        $mockHttpClient = $this->mock_http_request(Utils::jsonEncode($expectedResponse), $expectedEndpoint, $expectedParams, 'post');
+        $mockHttpClient = $this->mock_http_request($this->jsonEncodeFunction()($expectedResponse), $expectedEndpoint, $expectedParams, 'post');
 
         $this->assertEquals($expectedResponse, $this->jsonDecodeFunction()($mockHttpClient->post($expectedEndpoint, $expectedParams)->getBody(), true));
     }
@@ -67,7 +67,7 @@ public function it_can_list_current_invoices()
             ],
         ];
 
-        $mockHttpClient = $this->mock_http_request(Utils::jsonEncode($expectedResponse), $expectedEndpoint, $expectedParams, 'get');
+        $mockHttpClient = $this->mock_http_request($this->jsonEncodeFunction()($expectedResponse), $expectedEndpoint, $expectedParams, 'get');
 
         $this->assertEquals($expectedResponse, $this->jsonDecodeFunction()($mockHttpClient->get($expectedEndpoint, $expectedParams)->getBody(), true));
     }
@@ -86,7 +86,7 @@ public function it_can_delete_an_invoice()
             ],
         ];
 
-        $mockHttpClient = $this->mock_http_request(Utils::jsonEncode($expectedResponse), $expectedEndpoint, $expectedParams, 'delete');
+        $mockHttpClient = $this->mock_http_request($this->jsonEncodeFunction()($expectedResponse), $expectedEndpoint, $expectedParams, 'delete');
 
         $this->assertEquals($expectedResponse, $this->jsonDecodeFunction()($mockHttpClient->delete($expectedEndpoint, $expectedParams)->getBody(), true));
     }
@@ -106,7 +106,7 @@ public function it_can_update_an_invoice()
             'json' => $this->updateInvoiceParams(),
         ];
 
-        $mockHttpClient = $this->mock_http_request(Utils::jsonEncode($expectedResponse), $expectedEndpoint, $expectedParams, 'put');
+        $mockHttpClient = $this->mock_http_request($this->jsonEncodeFunction()($expectedResponse), $expectedEndpoint, $expectedParams, 'put');
 
         $this->assertEquals($expectedResponse, $this->jsonDecodeFunction()($mockHttpClient->put($expectedEndpoint, $expectedParams)->getBody(), true));
     }
@@ -125,7 +125,7 @@ public function it_can_show_details_for_an_invoice()
             ],
         ];
 
-        $mockHttpClient = $this->mock_http_request(Utils::jsonEncode($expectedResponse), $expectedEndpoint, $expectedParams, 'get');
+        $mockHttpClient = $this->mock_http_request($this->jsonEncodeFunction()($expectedResponse), $expectedEndpoint, $expectedParams, 'get');
 
         $this->assertEquals($expectedResponse, $this->jsonDecodeFunction()($mockHttpClient->get($expectedEndpoint, $expectedParams)->getBody(), true));
     }
@@ -145,7 +145,7 @@ public function it_can_cancel_an_invoice()
             'json' => $this->cancelInvoiceParams(),
         ];
 
-        $mockHttpClient = $this->mock_http_request(Utils::jsonEncode($expectedResponse), $expectedEndpoint, $expectedParams, 'post');
+        $mockHttpClient = $this->mock_http_request($this->jsonEncodeFunction()($expectedResponse), $expectedEndpoint, $expectedParams, 'post');
 
         $this->assertEquals($expectedResponse, $this->jsonDecodeFunction()($mockHttpClient->post($expectedEndpoint, $expectedParams)->getBody(), true));
     }
@@ -165,7 +165,7 @@ public function it_can_generate_qr_code_for_invoice()
             'json' => $this->generateQRCodeInvoiceParams(),
         ];
 
-        $mockHttpClient = $this->mock_http_request(Utils::jsonEncode($expectedResponse), $expectedEndpoint, $expectedParams, 'post');
+        $mockHttpClient = $this->mock_http_request($this->jsonEncodeFunction()($expectedResponse), $expectedEndpoint, $expectedParams, 'post');
 
         $this->assertEquals($expectedResponse, $this->jsonDecodeFunction()($mockHttpClient->post($expectedEndpoint, $expectedParams)->getBody(), true));
     }
@@ -185,7 +185,7 @@ public function it_can_register_payment_for_invoice()
             'json' => $this->registerInvoicePaymentParams(),
         ];
 
-        $mockHttpClient = $this->mock_http_request(Utils::jsonEncode($expectedResponse), $expectedEndpoint, $expectedParams, 'post');
+        $mockHttpClient = $this->mock_http_request($this->jsonEncodeFunction()($expectedResponse), $expectedEndpoint, $expectedParams, 'post');
 
         $this->assertEquals($expectedResponse, $this->jsonDecodeFunction()($mockHttpClient->post($expectedEndpoint, $expectedParams)->getBody(), true));
     }
@@ -204,7 +204,7 @@ public function it_can_delete_payment_for_invoice()
             ],
         ];
 
-        $mockHttpClient = $this->mock_http_request(Utils::jsonEncode($expectedResponse), $expectedEndpoint, $expectedParams, 'delete');
+        $mockHttpClient = $this->mock_http_request($this->jsonEncodeFunction()($expectedResponse), $expectedEndpoint, $expectedParams, 'delete');
 
         $this->assertEquals($expectedResponse, $this->jsonDecodeFunction()($mockHttpClient->delete($expectedEndpoint, $expectedParams)->getBody(), true));
     }
@@ -224,7 +224,7 @@ public function it_can_refund_payment_for_invoice()
             'json' => $this->refundInvoicePaymentParams(),
         ];
 
-        $mockHttpClient = $this->mock_http_request(Utils::jsonEncode($expectedResponse), $expectedEndpoint, $expectedParams, 'post');
+        $mockHttpClient = $this->mock_http_request($this->jsonEncodeFunction()($expectedResponse), $expectedEndpoint, $expectedParams, 'post');
 
         $this->assertEquals($expectedResponse, $this->jsonDecodeFunction()($mockHttpClient->post($expectedEndpoint, $expectedParams)->getBody(), true));
     }
@@ -243,7 +243,7 @@ public function it_can_delete_refund_for_invoice()
             ],
         ];
 
-        $mockHttpClient = $this->mock_http_request(Utils::jsonEncode($expectedResponse), $expectedEndpoint, $expectedParams, 'delete');
+        $mockHttpClient = $this->mock_http_request($this->jsonEncodeFunction()($expectedResponse), $expectedEndpoint, $expectedParams, 'delete');
 
         $this->assertEquals($expectedResponse, $this->jsonDecodeFunction()($mockHttpClient->delete($expectedEndpoint, $expectedParams)->getBody(), true));
     }
@@ -263,7 +263,7 @@ public function it_can_send_an_invoice()
             'json' => $this->sendInvoiceParams(),
         ];
 
-        $mockHttpClient = $this->mock_http_request(Utils::jsonEncode($expectedResponse), $expectedEndpoint, $expectedParams, 'post');
+        $mockHttpClient = $this->mock_http_request($this->jsonEncodeFunction()($expectedResponse), $expectedEndpoint, $expectedParams, 'post');
 
         $this->assertEquals($expectedResponse, $this->jsonDecodeFunction()($mockHttpClient->post($expectedEndpoint, $expectedParams)->getBody(), true));
     }
@@ -283,7 +283,7 @@ public function it_can_send_reminder_for_an_invoice()
             'json' => $this->sendInvoiceReminderParams(),
         ];
 
-        $mockHttpClient = $this->mock_http_request(Utils::jsonEncode($expectedResponse), $expectedEndpoint, $expectedParams, 'post');
+        $mockHttpClient = $this->mock_http_request($this->jsonEncodeFunction()($expectedResponse), $expectedEndpoint, $expectedParams, 'post');
 
         $this->assertEquals($expectedResponse, $this->jsonDecodeFunction()($mockHttpClient->post($expectedEndpoint, $expectedParams)->getBody(), true));
     }
diff --git a/tests/Unit/Client/OrdersTest.php b/tests/Unit/Client/OrdersTest.php
index 76291ca7..6355b29a 100644
--- a/tests/Unit/Client/OrdersTest.php
+++ b/tests/Unit/Client/OrdersTest.php
@@ -29,7 +29,7 @@ public function it_can_create_an_order()
             'json' => $this->createOrderParams(),
         ];
 
-        $mockHttpClient = $this->mock_http_request(Utils::jsonEncode($expectedResponse), $expectedEndpoint, $expectedParams, 'post');
+        $mockHttpClient = $this->mock_http_request($this->jsonEncodeFunction()($expectedResponse), $expectedEndpoint, $expectedParams, 'post');
 
         $this->assertEquals($expectedResponse, $this->jsonDecodeFunction()($mockHttpClient->post($expectedEndpoint, $expectedParams)->getBody(), true));
     }
diff --git a/tests/Unit/Client/PartnerReferralsTest.php b/tests/Unit/Client/PartnerReferralsTest.php
index b4891021..53a8a3ce 100644
--- a/tests/Unit/Client/PartnerReferralsTest.php
+++ b/tests/Unit/Client/PartnerReferralsTest.php
@@ -29,7 +29,7 @@ public function it_can_create_partner_referral()
             'json' => $this->mockCreatePartnerReferralParams(),
         ];
 
-        $mockHttpClient = $this->mock_http_request(Utils::jsonEncode($expectedResponse), $expectedEndpoint, $expectedParams, 'post');
+        $mockHttpClient = $this->mock_http_request($this->jsonEncodeFunction()($expectedResponse), $expectedEndpoint, $expectedParams, 'post');
 
         $this->assertEquals($expectedResponse, $this->jsonDecodeFunction()($mockHttpClient->post($expectedEndpoint, $expectedParams)->getBody(), true));
     }
@@ -48,7 +48,7 @@ public function it_can_get_referral_details()
             ],
         ];
 
-        $mockHttpClient = $this->mock_http_request(Utils::jsonEncode($expectedResponse), $expectedEndpoint, $expectedParams, 'get');
+        $mockHttpClient = $this->mock_http_request($this->jsonEncodeFunction()($expectedResponse), $expectedEndpoint, $expectedParams, 'get');
 
         $this->assertEquals($expectedResponse, $this->jsonDecodeFunction()($mockHttpClient->get($expectedEndpoint, $expectedParams)->getBody(), true));
     }
diff --git a/tests/Unit/Client/PaymentAuthorizationsTest.php b/tests/Unit/Client/PaymentAuthorizationsTest.php
index 075b6df4..435bb161 100644
--- a/tests/Unit/Client/PaymentAuthorizationsTest.php
+++ b/tests/Unit/Client/PaymentAuthorizationsTest.php
@@ -28,7 +28,7 @@ public function it_can_show_details_for_an_authorized_payment()
             ],
         ];
 
-        $mockHttpClient = $this->mock_http_request(Utils::jsonEncode($expectedResponse), $expectedEndpoint, $expectedParams, 'get');
+        $mockHttpClient = $this->mock_http_request($this->jsonEncodeFunction()($expectedResponse), $expectedEndpoint, $expectedParams, 'get');
 
         $this->assertEquals($expectedResponse, $this->jsonDecodeFunction()($mockHttpClient->get($expectedEndpoint, $expectedParams)->getBody(), true));
     }
@@ -48,7 +48,7 @@ public function it_can_capture_an_authorized_payment()
             'json' => $this->mockCaptureAuthorizedPaymentParams(),
         ];
 
-        $mockHttpClient = $this->mock_http_request(Utils::jsonEncode($expectedResponse), $expectedEndpoint, $expectedParams, 'post');
+        $mockHttpClient = $this->mock_http_request($this->jsonEncodeFunction()($expectedResponse), $expectedEndpoint, $expectedParams, 'post');
 
         $this->assertEquals($expectedResponse, $this->jsonDecodeFunction()($mockHttpClient->post($expectedEndpoint, $expectedParams)->getBody(), true));
     }
@@ -68,7 +68,7 @@ public function it_can_reauthorize_an_authorized_payment()
             'json' => $this->mockReAuthorizeAuthorizedPaymentParams(),
         ];
 
-        $mockHttpClient = $this->mock_http_request(Utils::jsonEncode($expectedResponse), $expectedEndpoint, $expectedParams, 'post');
+        $mockHttpClient = $this->mock_http_request($this->jsonEncodeFunction()($expectedResponse), $expectedEndpoint, $expectedParams, 'post');
 
         $this->assertEquals($expectedResponse, $this->jsonDecodeFunction()($mockHttpClient->post($expectedEndpoint, $expectedParams)->getBody(), true));
     }
@@ -87,7 +87,7 @@ public function it_can_void_an_authorized_payment()
             ],
         ];
 
-        $mockHttpClient = $this->mock_http_request(Utils::jsonEncode($expectedResponse), $expectedEndpoint, $expectedParams, 'post');
+        $mockHttpClient = $this->mock_http_request($this->jsonEncodeFunction()($expectedResponse), $expectedEndpoint, $expectedParams, 'post');
 
         $this->assertEquals($expectedResponse, $this->jsonDecodeFunction()($mockHttpClient->post($expectedEndpoint, $expectedParams)->getBody(), true));
     }
diff --git a/tests/Unit/Client/PaymentCapturesTest.php b/tests/Unit/Client/PaymentCapturesTest.php
index de42b707..5901a786 100644
--- a/tests/Unit/Client/PaymentCapturesTest.php
+++ b/tests/Unit/Client/PaymentCapturesTest.php
@@ -28,7 +28,7 @@ public function it_can_show_details_for_a_captured_payment()
             ],
         ];
 
-        $mockHttpClient = $this->mock_http_request(Utils::jsonEncode($expectedResponse), $expectedEndpoint, $expectedParams, 'get');
+        $mockHttpClient = $this->mock_http_request($this->jsonEncodeFunction()($expectedResponse), $expectedEndpoint, $expectedParams, 'get');
 
         $this->assertEquals($expectedResponse, $this->jsonDecodeFunction()($mockHttpClient->get($expectedEndpoint, $expectedParams)->getBody(), true));
     }
@@ -48,7 +48,7 @@ public function it_can_refund_a_captured_payment()
             'json' => $this->mockRefundCapturedPaymentParams(),
         ];
 
-        $mockHttpClient = $this->mock_http_request(Utils::jsonEncode($expectedResponse), $expectedEndpoint, $expectedParams, 'post');
+        $mockHttpClient = $this->mock_http_request($this->jsonEncodeFunction()($expectedResponse), $expectedEndpoint, $expectedParams, 'post');
 
         $this->assertEquals($expectedResponse, $this->jsonDecodeFunction()($mockHttpClient->post($expectedEndpoint, $expectedParams)->getBody(), true));
     }
diff --git a/tests/Unit/Client/PaymentExperienceWebProfilesTest.php b/tests/Unit/Client/PaymentExperienceWebProfilesTest.php
index 5bb97af1..b69734ed 100644
--- a/tests/Unit/Client/PaymentExperienceWebProfilesTest.php
+++ b/tests/Unit/Client/PaymentExperienceWebProfilesTest.php
@@ -28,7 +28,7 @@ public function it_can_list_web_experience_profiles()
             ],
         ];
 
-        $mockHttpClient = $this->mock_http_request(Utils::jsonEncode($expectedResponse), $expectedEndpoint, $expectedParams, 'get');
+        $mockHttpClient = $this->mock_http_request($this->jsonEncodeFunction()($expectedResponse), $expectedEndpoint, $expectedParams, 'get');
 
         $this->assertEquals($expectedResponse, $this->jsonDecodeFunction()($mockHttpClient->get($expectedEndpoint, $expectedParams)->getBody(), true));
     }
@@ -49,7 +49,7 @@ public function it_can_create_web_experience_profile()
             'json' => $this->mockCreateWebProfileParams(),
         ];
 
-        $mockHttpClient = $this->mock_http_request(Utils::jsonEncode($expectedResponse), $expectedEndpoint, $expectedParams, 'post');
+        $mockHttpClient = $this->mock_http_request($this->jsonEncodeFunction()($expectedResponse), $expectedEndpoint, $expectedParams, 'post');
 
         $this->assertEquals($expectedResponse, $this->jsonDecodeFunction()($mockHttpClient->post($expectedEndpoint, $expectedParams)->getBody(), true));
     }
@@ -68,7 +68,7 @@ public function it_can_delete_web_experience_profile()
             ],
         ];
 
-        $mockHttpClient = $this->mock_http_request(Utils::jsonEncode($expectedResponse), $expectedEndpoint, $expectedParams, 'delete');
+        $mockHttpClient = $this->mock_http_request($this->jsonEncodeFunction()($expectedResponse), $expectedEndpoint, $expectedParams, 'delete');
 
         $this->assertEquals($expectedResponse, $this->jsonDecodeFunction()($mockHttpClient->delete($expectedEndpoint, $expectedParams)->getBody(), true));
     }
@@ -88,7 +88,7 @@ public function it_can_partially_update_web_experience_profile()
             'json' => $this->partiallyUpdateWebProfileParams(),
         ];
 
-        $mockHttpClient = $this->mock_http_request(Utils::jsonEncode($expectedResponse), $expectedEndpoint, $expectedParams, 'patch');
+        $mockHttpClient = $this->mock_http_request($this->jsonEncodeFunction()($expectedResponse), $expectedEndpoint, $expectedParams, 'patch');
 
         $this->assertEquals($expectedResponse, $this->jsonDecodeFunction()($mockHttpClient->patch($expectedEndpoint, $expectedParams)->getBody(), true));
     }
@@ -108,7 +108,7 @@ public function it_can_fully_update_web_experience_profile()
             'json' => $this->updateWebProfileParams(),
         ];
 
-        $mockHttpClient = $this->mock_http_request(Utils::jsonEncode($expectedResponse), $expectedEndpoint, $expectedParams, 'patch');
+        $mockHttpClient = $this->mock_http_request($this->jsonEncodeFunction()($expectedResponse), $expectedEndpoint, $expectedParams, 'patch');
 
         $this->assertEquals($expectedResponse, $this->jsonDecodeFunction()($mockHttpClient->patch($expectedEndpoint, $expectedParams)->getBody(), true));
     }
@@ -127,7 +127,7 @@ public function it_can_get_web_experience_profile_details()
             ],
         ];
 
-        $mockHttpClient = $this->mock_http_request(Utils::jsonEncode($expectedResponse), $expectedEndpoint, $expectedParams, 'get');
+        $mockHttpClient = $this->mock_http_request($this->jsonEncodeFunction()($expectedResponse), $expectedEndpoint, $expectedParams, 'get');
 
         $this->assertEquals($expectedResponse, $this->jsonDecodeFunction()($mockHttpClient->get($expectedEndpoint, $expectedParams)->getBody(), true));
     }
diff --git a/tests/Unit/Client/PaymentRefundsTest.php b/tests/Unit/Client/PaymentRefundsTest.php
index 5a6cc5e3..3bdcb247 100644
--- a/tests/Unit/Client/PaymentRefundsTest.php
+++ b/tests/Unit/Client/PaymentRefundsTest.php
@@ -26,7 +26,7 @@ public function it_can_show_details_for_a_refund()
             ],
         ];
 
-        $mockHttpClient = $this->mock_http_request(Utils::jsonEncode($expectedResponse), $expectedEndpoint, $expectedParams, 'get');
+        $mockHttpClient = $this->mock_http_request($this->jsonEncodeFunction()($expectedResponse), $expectedEndpoint, $expectedParams, 'get');
 
         $this->assertEquals($expectedResponse, $this->jsonDecodeFunction()($mockHttpClient->get($expectedEndpoint, $expectedParams)->getBody(), true));
     }
diff --git a/tests/Unit/Client/PayoutsTest.php b/tests/Unit/Client/PayoutsTest.php
index 841ef7d5..ca4972e8 100644
--- a/tests/Unit/Client/PayoutsTest.php
+++ b/tests/Unit/Client/PayoutsTest.php
@@ -29,7 +29,7 @@ public function it_can_create_batch_payout()
             'json' => $this->mockCreateBatchPayoutParams(),
         ];
 
-        $mockHttpClient = $this->mock_http_request(Utils::jsonEncode($expectedResponse), $expectedEndpoint, $expectedParams, 'post');
+        $mockHttpClient = $this->mock_http_request($this->jsonEncodeFunction()($expectedResponse), $expectedEndpoint, $expectedParams, 'post');
 
         $this->assertEquals($expectedResponse, $this->jsonDecodeFunction()($mockHttpClient->post($expectedEndpoint, $expectedParams)->getBody(), true));
     }
@@ -48,7 +48,7 @@ public function it_can_show_batch_payout_details()
             ],
         ];
 
-        $mockHttpClient = $this->mock_http_request(Utils::jsonEncode($expectedResponse), $expectedEndpoint, $expectedParams, 'get');
+        $mockHttpClient = $this->mock_http_request($this->jsonEncodeFunction()($expectedResponse), $expectedEndpoint, $expectedParams, 'get');
 
         $this->assertEquals($expectedResponse, $this->jsonDecodeFunction()($mockHttpClient->get($expectedEndpoint, $expectedParams)->getBody(), true));
     }
@@ -67,7 +67,7 @@ public function it_can_show_batch_payout_item_details()
             ],
         ];
 
-        $mockHttpClient = $this->mock_http_request(Utils::jsonEncode($expectedResponse), $expectedEndpoint, $expectedParams, 'get');
+        $mockHttpClient = $this->mock_http_request($this->jsonEncodeFunction()($expectedResponse), $expectedEndpoint, $expectedParams, 'get');
 
         $this->assertEquals($expectedResponse, $this->jsonDecodeFunction()($mockHttpClient->get($expectedEndpoint, $expectedParams)->getBody(), true));
     }
@@ -86,7 +86,7 @@ public function it_can_cancel_unclaimed_batch_payout_item()
             ],
         ];
 
-        $mockHttpClient = $this->mock_http_request(Utils::jsonEncode($expectedResponse), $expectedEndpoint, $expectedParams, 'get');
+        $mockHttpClient = $this->mock_http_request($this->jsonEncodeFunction()($expectedResponse), $expectedEndpoint, $expectedParams, 'get');
 
         $this->assertEquals($expectedResponse, $this->jsonDecodeFunction()($mockHttpClient->get($expectedEndpoint, $expectedParams)->getBody(), true));
     }
diff --git a/tests/Unit/Client/ReferencedPayoutsTest.php b/tests/Unit/Client/ReferencedPayoutsTest.php
index cc7094e6..97b7aaa3 100644
--- a/tests/Unit/Client/ReferencedPayoutsTest.php
+++ b/tests/Unit/Client/ReferencedPayoutsTest.php
@@ -31,7 +31,7 @@ public function it_can_create_referenced_batch_payout()
             'json' => $this->mockCreateReferencedBatchPayoutParams(),
         ];
 
-        $mockHttpClient = $this->mock_http_request(Utils::jsonEncode($expectedResponse), $expectedEndpoint, $expectedParams, 'post');
+        $mockHttpClient = $this->mock_http_request($this->jsonEncodeFunction()($expectedResponse), $expectedEndpoint, $expectedParams, 'post');
 
         $this->assertEquals($expectedResponse, $this->jsonDecodeFunction()($mockHttpClient->post($expectedEndpoint, $expectedParams)->getBody(), true));
     }
@@ -50,7 +50,7 @@ public function it_can_list_items_referenced_in_batch_payout()
             ],
         ];
 
-        $mockHttpClient = $this->mock_http_request(Utils::jsonEncode($expectedResponse), $expectedEndpoint, $expectedParams, 'get');
+        $mockHttpClient = $this->mock_http_request($this->jsonEncodeFunction()($expectedResponse), $expectedEndpoint, $expectedParams, 'get');
 
         $this->assertEquals($expectedResponse, $this->jsonDecodeFunction()($mockHttpClient->get($expectedEndpoint, $expectedParams)->getBody(), true));
     }
@@ -72,7 +72,7 @@ public function it_can_create_referenced_batch_payout_item()
             'json' => $this->mockCreateReferencedBatchPayoutItemParams(),
         ];
 
-        $mockHttpClient = $this->mock_http_request(Utils::jsonEncode($expectedResponse), $expectedEndpoint, $expectedParams, 'post');
+        $mockHttpClient = $this->mock_http_request($this->jsonEncodeFunction()($expectedResponse), $expectedEndpoint, $expectedParams, 'post');
 
         $this->assertEquals($expectedResponse, $this->jsonDecodeFunction()($mockHttpClient->post($expectedEndpoint, $expectedParams)->getBody(), true));
     }
@@ -94,7 +94,7 @@ public function it_can_show_referenced_payout_item_details()
             'json' => $this->mockCreateReferencedBatchPayoutItemParams(),
         ];
 
-        $mockHttpClient = $this->mock_http_request(Utils::jsonEncode($expectedResponse), $expectedEndpoint, $expectedParams, 'get');
+        $mockHttpClient = $this->mock_http_request($this->jsonEncodeFunction()($expectedResponse), $expectedEndpoint, $expectedParams, 'get');
 
         $this->assertEquals($expectedResponse, $this->jsonDecodeFunction()($mockHttpClient->get($expectedEndpoint, $expectedParams)->getBody(), true));
     }
diff --git a/tests/Unit/Client/ReportingTest.php b/tests/Unit/Client/ReportingTest.php
index a7479b64..3e917d0b 100644
--- a/tests/Unit/Client/ReportingTest.php
+++ b/tests/Unit/Client/ReportingTest.php
@@ -28,7 +28,7 @@ public function it_can_list_transactions()
             ],
         ];
 
-        $mockHttpClient = $this->mock_http_request(Utils::jsonEncode($expectedResponse), $expectedEndpoint, $expectedParams, 'get');
+        $mockHttpClient = $this->mock_http_request($this->jsonEncodeFunction()($expectedResponse), $expectedEndpoint, $expectedParams, 'get');
         $mockResponse = $mockHttpClient->get($expectedEndpoint, $expectedParams)->getBody();
 
         $this->assertArrayHasKey('transaction_details', $this->jsonDecodeFunction()($mockResponse, true));
@@ -48,7 +48,7 @@ public function it_can_list_balances()
             ],
         ];
 
-        $mockHttpClient = $this->mock_http_request(Utils::jsonEncode($expectedResponse), $expectedEndpoint, $expectedParams, 'get');
+        $mockHttpClient = $this->mock_http_request($this->jsonEncodeFunction()($expectedResponse), $expectedEndpoint, $expectedParams, 'get');
 
         $this->assertEquals($expectedResponse, $this->jsonDecodeFunction()($mockHttpClient->get($expectedEndpoint, $expectedParams)->getBody(), true));
     }
diff --git a/tests/Unit/Client/SubscriptionsTest.php b/tests/Unit/Client/SubscriptionsTest.php
index 12c9138e..5998ed20 100644
--- a/tests/Unit/Client/SubscriptionsTest.php
+++ b/tests/Unit/Client/SubscriptionsTest.php
@@ -29,7 +29,7 @@ public function it_can_create_a_subscription()
             'json' => $this->mockCreateSubscriptionParams(),
         ];
 
-        $mockHttpClient = $this->mock_http_request(Utils::jsonEncode($expectedResponse), $expectedEndpoint, $expectedParams, 'post');
+        $mockHttpClient = $this->mock_http_request($this->jsonEncodeFunction()($expectedResponse), $expectedEndpoint, $expectedParams, 'post');
 
         $this->assertEquals($expectedResponse, $this->jsonDecodeFunction()($mockHttpClient->post($expectedEndpoint, $expectedParams)->getBody(), true));
     }
@@ -49,7 +49,7 @@ public function it_can_update_a_subscription()
             'json' => $this->mockUpdateSubscriptionParams(),
         ];
 
-        $mockHttpClient = $this->mock_http_request(Utils::jsonEncode($expectedResponse), $expectedEndpoint, $expectedParams, 'patch');
+        $mockHttpClient = $this->mock_http_request($this->jsonEncodeFunction()($expectedResponse), $expectedEndpoint, $expectedParams, 'patch');
 
         $this->assertEquals($expectedResponse, $this->jsonDecodeFunction()($mockHttpClient->patch($expectedEndpoint, $expectedParams)->getBody(), true));
     }
@@ -68,7 +68,7 @@ public function it_can_show_details_for_a_subscription()
             ],
         ];
 
-        $mockHttpClient = $this->mock_http_request(Utils::jsonEncode($expectedResponse), $expectedEndpoint, $expectedParams, 'get');
+        $mockHttpClient = $this->mock_http_request($this->jsonEncodeFunction()($expectedResponse), $expectedEndpoint, $expectedParams, 'get');
 
         $this->assertEquals($expectedResponse, $this->jsonDecodeFunction()($mockHttpClient->get($expectedEndpoint, $expectedParams)->getBody(), true));
     }
@@ -88,7 +88,7 @@ public function it_can_activate_a_subscription()
             'json' => $this->mockActivateSubscriptionParams(),
         ];
 
-        $mockHttpClient = $this->mock_http_request(Utils::jsonEncode($expectedResponse), $expectedEndpoint, $expectedParams, 'post');
+        $mockHttpClient = $this->mock_http_request($this->jsonEncodeFunction()($expectedResponse), $expectedEndpoint, $expectedParams, 'post');
 
         $this->assertEquals($expectedResponse, $this->jsonDecodeFunction()($mockHttpClient->post($expectedEndpoint, $expectedParams)->getBody(), true));
     }
@@ -108,7 +108,7 @@ public function it_can_cancel_a_subscription()
             'json' => $this->mockCancelSubscriptionParams(),
         ];
 
-        $mockHttpClient = $this->mock_http_request(Utils::jsonEncode($expectedResponse), $expectedEndpoint, $expectedParams, 'post');
+        $mockHttpClient = $this->mock_http_request($this->jsonEncodeFunction()($expectedResponse), $expectedEndpoint, $expectedParams, 'post');
 
         $this->assertEquals($expectedResponse, $this->jsonDecodeFunction()($mockHttpClient->post($expectedEndpoint, $expectedParams)->getBody(), true));
     }
@@ -128,7 +128,7 @@ public function it_can_suspend_a_subscription()
             'json' => $this->mockSuspendSubscriptionParams(),
         ];
 
-        $mockHttpClient = $this->mock_http_request(Utils::jsonEncode($expectedResponse), $expectedEndpoint, $expectedParams, 'post');
+        $mockHttpClient = $this->mock_http_request($this->jsonEncodeFunction()($expectedResponse), $expectedEndpoint, $expectedParams, 'post');
 
         $this->assertEquals($expectedResponse, $this->jsonDecodeFunction()($mockHttpClient->post($expectedEndpoint, $expectedParams)->getBody(), true));
     }
@@ -148,7 +148,7 @@ public function it_can_capture_payment_for_a_subscription()
             'json' => $this->mockCaptureSubscriptionPaymentParams(),
         ];
 
-        $mockHttpClient = $this->mock_http_request(Utils::jsonEncode($expectedResponse), $expectedEndpoint, $expectedParams, 'post');
+        $mockHttpClient = $this->mock_http_request($this->jsonEncodeFunction()($expectedResponse), $expectedEndpoint, $expectedParams, 'post');
 
         $this->assertEquals($expectedResponse, $this->jsonDecodeFunction()($mockHttpClient->post($expectedEndpoint, $expectedParams)->getBody(), true));
     }
@@ -168,7 +168,7 @@ public function it_can_update_quantity_or_product_for_a_subscription()
             'json' => $this->mockUpdateSubscriptionItemsParams(),
         ];
 
-        $mockHttpClient = $this->mock_http_request(Utils::jsonEncode($expectedResponse), $expectedEndpoint, $expectedParams, 'post');
+        $mockHttpClient = $this->mock_http_request($this->jsonEncodeFunction()($expectedResponse), $expectedEndpoint, $expectedParams, 'post');
 
         $this->assertEquals($expectedResponse, $this->jsonDecodeFunction()($mockHttpClient->post($expectedEndpoint, $expectedParams)->getBody(), true));
     }
@@ -187,7 +187,7 @@ public function it_can_list_transactions_for_a_subscription()
             ],
         ];
 
-        $mockHttpClient = $this->mock_http_request(Utils::jsonEncode($expectedResponse), $expectedEndpoint, $expectedParams, 'get');
+        $mockHttpClient = $this->mock_http_request($this->jsonEncodeFunction()($expectedResponse), $expectedEndpoint, $expectedParams, 'get');
 
         $this->assertEquals($expectedResponse, $this->jsonDecodeFunction()($mockHttpClient->get($expectedEndpoint, $expectedParams)->getBody(), true));
     }
diff --git a/tests/Unit/Client/TrackersTest.php b/tests/Unit/Client/TrackersTest.php
index 9c8327f9..399274a9 100644
--- a/tests/Unit/Client/TrackersTest.php
+++ b/tests/Unit/Client/TrackersTest.php
@@ -28,7 +28,7 @@ public function it_can_get_tracking_details_for_tracking_id()
             ],
         ];
 
-        $mockHttpClient = $this->mock_http_request(Utils::jsonEncode($expectedResponse), $expectedEndpoint, $expectedParams, 'get');
+        $mockHttpClient = $this->mock_http_request($this->jsonEncodeFunction()($expectedResponse), $expectedEndpoint, $expectedParams, 'get');
 
         $this->assertEquals($expectedResponse, $this->jsonDecodeFunction()($mockHttpClient->get($expectedEndpoint, $expectedParams)->getBody(), true));
     }
@@ -48,7 +48,7 @@ public function it_can_update_tracking_details_for_tracking_id()
             'json' => $this->mockUpdateTrackingDetailsParams(),
         ];
 
-        $mockHttpClient = $this->mock_http_request(Utils::jsonEncode($expectedResponse), $expectedEndpoint, $expectedParams, 'put');
+        $mockHttpClient = $this->mock_http_request($this->jsonEncodeFunction()($expectedResponse), $expectedEndpoint, $expectedParams, 'put');
 
         $this->assertEquals($expectedResponse, $this->jsonDecodeFunction()($mockHttpClient->put($expectedEndpoint, $expectedParams)->getBody(), true));
     }
@@ -68,7 +68,7 @@ public function it_can_create_tracking_in_batches()
             'json' => $this->mockCreateTrackinginBatchesParams(),
         ];
 
-        $mockHttpClient = $this->mock_http_request(Utils::jsonEncode($expectedResponse), $expectedEndpoint, $expectedParams, 'post');
+        $mockHttpClient = $this->mock_http_request($this->jsonEncodeFunction()($expectedResponse), $expectedEndpoint, $expectedParams, 'post');
 
         $this->assertEquals($expectedResponse, $this->jsonDecodeFunction()($mockHttpClient->post($expectedEndpoint, $expectedParams)->getBody(), true));
     }
diff --git a/tests/Unit/Client/WebHooksEventsTest.php b/tests/Unit/Client/WebHooksEventsTest.php
index e008359e..eb2a5e95 100644
--- a/tests/Unit/Client/WebHooksEventsTest.php
+++ b/tests/Unit/Client/WebHooksEventsTest.php
@@ -28,7 +28,7 @@ public function it_can_list_web_hooks_event_types()
             ],
         ];
 
-        $mockHttpClient = $this->mock_http_request(Utils::jsonEncode($expectedResponse), $expectedEndpoint, $expectedParams, 'get');
+        $mockHttpClient = $this->mock_http_request($this->jsonEncodeFunction()($expectedResponse), $expectedEndpoint, $expectedParams, 'get');
 
         $this->assertEquals($expectedResponse, $this->jsonDecodeFunction()($mockHttpClient->get($expectedEndpoint, $expectedParams)->getBody(), true));
     }
@@ -47,7 +47,7 @@ public function it_can_list_web_hooks_events()
             ],
         ];
 
-        $mockHttpClient = $this->mock_http_request(Utils::jsonEncode($expectedResponse), $expectedEndpoint, $expectedParams, 'get');
+        $mockHttpClient = $this->mock_http_request($this->jsonEncodeFunction()($expectedResponse), $expectedEndpoint, $expectedParams, 'get');
 
         $this->assertEquals($expectedResponse, $this->jsonDecodeFunction()($mockHttpClient->get($expectedEndpoint, $expectedParams)->getBody(), true));
     }
@@ -66,7 +66,7 @@ public function it_can_show_details_for_a_web_hooks_event()
             ],
         ];
 
-        $mockHttpClient = $this->mock_http_request(Utils::jsonEncode($expectedResponse), $expectedEndpoint, $expectedParams, 'get');
+        $mockHttpClient = $this->mock_http_request($this->jsonEncodeFunction()($expectedResponse), $expectedEndpoint, $expectedParams, 'get');
 
         $this->assertEquals($expectedResponse, $this->jsonDecodeFunction()($mockHttpClient->get($expectedEndpoint, $expectedParams)->getBody(), true));
     }
@@ -86,7 +86,7 @@ public function it_can_resend_notification_for_a_web_hooks_event()
             'json' => $this->mockResendWebHookEventNotificationParams(),
         ];
 
-        $mockHttpClient = $this->mock_http_request(Utils::jsonEncode($expectedResponse), $expectedEndpoint, $expectedParams, 'get');
+        $mockHttpClient = $this->mock_http_request($this->jsonEncodeFunction()($expectedResponse), $expectedEndpoint, $expectedParams, 'get');
 
         $this->assertEquals($expectedResponse, $this->jsonDecodeFunction()($mockHttpClient->get($expectedEndpoint, $expectedParams)->getBody(), true));
     }
diff --git a/tests/Unit/Client/WebHooksTest.php b/tests/Unit/Client/WebHooksTest.php
index 91edb71b..ed8b78d9 100644
--- a/tests/Unit/Client/WebHooksTest.php
+++ b/tests/Unit/Client/WebHooksTest.php
@@ -29,7 +29,7 @@ public function it_can_create_a_web_hook()
             'json' => $this->mockCreateWebHookParams(),
         ];
 
-        $mockHttpClient = $this->mock_http_request(Utils::jsonEncode($expectedResponse), $expectedEndpoint, $expectedParams, 'post');
+        $mockHttpClient = $this->mock_http_request($this->jsonEncodeFunction()($expectedResponse), $expectedEndpoint, $expectedParams, 'post');
 
         $this->assertEquals($expectedResponse, $this->jsonDecodeFunction()($mockHttpClient->post($expectedEndpoint, $expectedParams)->getBody(), true));
     }
@@ -48,7 +48,7 @@ public function it_can_list_web_hooks()
             ],
         ];
 
-        $mockHttpClient = $this->mock_http_request(Utils::jsonEncode($expectedResponse), $expectedEndpoint, $expectedParams, 'get');
+        $mockHttpClient = $this->mock_http_request($this->jsonEncodeFunction()($expectedResponse), $expectedEndpoint, $expectedParams, 'get');
 
         $this->assertEquals($expectedResponse, $this->jsonDecodeFunction()($mockHttpClient->get($expectedEndpoint, $expectedParams)->getBody(), true));
     }
@@ -67,7 +67,7 @@ public function it_can_delete_a_web_hook()
             ],
         ];
 
-        $mockHttpClient = $this->mock_http_request(Utils::jsonEncode($expectedResponse), $expectedEndpoint, $expectedParams, 'delete');
+        $mockHttpClient = $this->mock_http_request($this->jsonEncodeFunction()($expectedResponse), $expectedEndpoint, $expectedParams, 'delete');
 
         $this->assertEquals($expectedResponse, $this->jsonDecodeFunction()($mockHttpClient->delete($expectedEndpoint, $expectedParams)->getBody(), true));
     }
@@ -87,7 +87,7 @@ public function it_can_update_a_web_hook()
             'json' => $this->mockUpdateWebHookParams(),
         ];
 
-        $mockHttpClient = $this->mock_http_request(Utils::jsonEncode($expectedResponse), $expectedEndpoint, $expectedParams, 'patch');
+        $mockHttpClient = $this->mock_http_request($this->jsonEncodeFunction()($expectedResponse), $expectedEndpoint, $expectedParams, 'patch');
 
         $this->assertEquals($expectedResponse, $this->jsonDecodeFunction()($mockHttpClient->patch($expectedEndpoint, $expectedParams)->getBody(), true));
     }
@@ -106,7 +106,7 @@ public function it_can_show_details_for_a_web_hook()
             ],
         ];
 
-        $mockHttpClient = $this->mock_http_request(Utils::jsonEncode($expectedResponse), $expectedEndpoint, $expectedParams, 'get');
+        $mockHttpClient = $this->mock_http_request($this->jsonEncodeFunction()($expectedResponse), $expectedEndpoint, $expectedParams, 'get');
 
         $this->assertEquals($expectedResponse, $this->jsonDecodeFunction()($mockHttpClient->get($expectedEndpoint, $expectedParams)->getBody(), true));
     }
@@ -125,7 +125,7 @@ public function it_can_list_web_hooks_events()
             ],
         ];
 
-        $mockHttpClient = $this->mock_http_request(Utils::jsonEncode($expectedResponse), $expectedEndpoint, $expectedParams, 'get');
+        $mockHttpClient = $this->mock_http_request($this->jsonEncodeFunction()($expectedResponse), $expectedEndpoint, $expectedParams, 'get');
 
         $this->assertEquals($expectedResponse, $this->jsonDecodeFunction()($mockHttpClient->get($expectedEndpoint, $expectedParams)->getBody(), true));
     }
diff --git a/tests/Unit/Client/WebHooksVerificationTest.php b/tests/Unit/Client/WebHooksVerificationTest.php
index c3ef2248..16057513 100644
--- a/tests/Unit/Client/WebHooksVerificationTest.php
+++ b/tests/Unit/Client/WebHooksVerificationTest.php
@@ -29,7 +29,7 @@ public function it_can_verify_web_hook_signature()
             'json' => $this->mockVerifyWebHookSignatureParams(),
         ];
 
-        $mockHttpClient = $this->mock_http_request(Utils::jsonEncode($expectedResponse), $expectedEndpoint, $expectedParams, 'post');
+        $mockHttpClient = $this->mock_http_request($this->jsonEncodeFunction()($expectedResponse), $expectedEndpoint, $expectedParams, 'post');
 
         $this->assertEquals($expectedResponse, $this->jsonDecodeFunction()($mockHttpClient->post($expectedEndpoint, $expectedParams)->getBody(), true));
     }
diff --git a/tests/Unit/ClientTest.php b/tests/Unit/ClientTest.php
index 1a060dc3..1d60b885 100644
--- a/tests/Unit/ClientTest.php
+++ b/tests/Unit/ClientTest.php
@@ -34,7 +34,7 @@ public function it_can_get_access_token()
             'auth' => ['username', 'password'],
         ];
 
-        $mockHttpClient = $this->mock_http_request(Utils::jsonEncode($expectedResponse), $expectedEndpoint, $expectedParams);
+        $mockHttpClient = $this->mock_http_request($this->jsonEncodeFunction()($expectedResponse), $expectedEndpoint, $expectedParams);
 
         $this->assertEquals($expectedResponse, $this->jsonDecodeFunction()($mockHttpClient->post($expectedEndpoint, $expectedParams)->getBody(), true));
     }