diff --git a/pkg/resource/json/canonical_test.go b/pkg/resource/json/canonical_test.go
index 0f532a6f..6d215bc7 100644
--- a/pkg/resource/json/canonical_test.go
+++ b/pkg/resource/json/canonical_test.go
@@ -52,10 +52,10 @@ func TestCanonicalize(t *testing.T) {
 				if err != nil {
 					t.Fatalf("Failed to read expected the output file: %v", err)
 				}
-				expectedOutput = strings.Join(strings.Split(strings.TrimSpace(string(output)), "\n")[3:], "\n")
+				expectedOutput = strings.TrimSpace(string(output))
 			}
 
-			inputJSON := strings.Join(strings.Split(strings.TrimSpace(string(input)), "\n")[3:], "\n")
+			inputJSON := strings.TrimSpace(string(input))
 			canonicalJSON, err := Canonicalize(inputJSON)
 			if err != nil {
 				if diff := cmp.Diff(tc.err, err, test.EquateErrors()); diff != "" {
diff --git a/pkg/resource/json/testdata/array.json b/pkg/resource/json/testdata/array.json
index f8f4c94a..bb298bad 100644
--- a/pkg/resource/json/testdata/array.json
+++ b/pkg/resource/json/testdata/array.json
@@ -1,6 +1,3 @@
-// SPDX-FileCopyrightText: 2024 The Crossplane Authors <https://crossplane.io>
-//
-// SPDX-License-Identifier: Apache-2.0
 [
   {
     "Principal": [
diff --git a/pkg/resource/json/testdata/array.json.license b/pkg/resource/json/testdata/array.json.license
new file mode 100644
index 00000000..b0dc8fc5
--- /dev/null
+++ b/pkg/resource/json/testdata/array.json.license
@@ -0,0 +1,3 @@
+SPDX-FileCopyrightText: 2024 The Crossplane Authors <https://crossplane.io>
+
+SPDX-License-Identifier: Apache-2.0
diff --git a/pkg/resource/json/testdata/array_canonical.json b/pkg/resource/json/testdata/array_canonical.json
index 062903e9..123c05ec 100644
--- a/pkg/resource/json/testdata/array_canonical.json
+++ b/pkg/resource/json/testdata/array_canonical.json
@@ -1,4 +1 @@
-// SPDX-FileCopyrightText: 2024 The Crossplane Authors <https://crossplane.io>
-//
-// SPDX-License-Identifier: Apache-2.0
 [{"Principal":["arn:aws:iam::153891904029:user/official-provider-testing"],"Rules":[{"Permission":["aoss:*"],"Resource":["index/example-collection/*"],"ResourceType":"index"},{"Permission":["aoss:*"],"Resource":["collection/example-collection"],"ResourceType":"collection"}]}]
diff --git a/pkg/resource/json/testdata/array_canonical.json.license b/pkg/resource/json/testdata/array_canonical.json.license
new file mode 100644
index 00000000..b0dc8fc5
--- /dev/null
+++ b/pkg/resource/json/testdata/array_canonical.json.license
@@ -0,0 +1,3 @@
+SPDX-FileCopyrightText: 2024 The Crossplane Authors <https://crossplane.io>
+
+SPDX-License-Identifier: Apache-2.0
diff --git a/pkg/resource/json/testdata/invalid.json b/pkg/resource/json/testdata/invalid.json
index 96caf6de..fe6f8adf 100644
--- a/pkg/resource/json/testdata/invalid.json
+++ b/pkg/resource/json/testdata/invalid.json
@@ -1,4 +1 @@
-// SPDX-FileCopyrightText: 2024 The Crossplane Authors <https://crossplane.io>
-//
-// SPDX-License-Identifier: Apache-2.0
 {"a": "b",}
diff --git a/pkg/resource/json/testdata/invalid.json.license b/pkg/resource/json/testdata/invalid.json.license
new file mode 100644
index 00000000..b0dc8fc5
--- /dev/null
+++ b/pkg/resource/json/testdata/invalid.json.license
@@ -0,0 +1,3 @@
+SPDX-FileCopyrightText: 2024 The Crossplane Authors <https://crossplane.io>
+
+SPDX-License-Identifier: Apache-2.0
diff --git a/pkg/resource/json/testdata/policy.json b/pkg/resource/json/testdata/policy.json
index 980ca3e5..db9c1fb4 100644
--- a/pkg/resource/json/testdata/policy.json
+++ b/pkg/resource/json/testdata/policy.json
@@ -1,6 +1,3 @@
-// SPDX-FileCopyrightText: 2024 The Crossplane Authors <https://crossplane.io>
-//
-// SPDX-License-Identifier: Apache-2.0
 {
   "Rules": [
     {
diff --git a/pkg/resource/json/testdata/policy.json.license b/pkg/resource/json/testdata/policy.json.license
new file mode 100644
index 00000000..b0dc8fc5
--- /dev/null
+++ b/pkg/resource/json/testdata/policy.json.license
@@ -0,0 +1,3 @@
+SPDX-FileCopyrightText: 2024 The Crossplane Authors <https://crossplane.io>
+
+SPDX-License-Identifier: Apache-2.0
diff --git a/pkg/resource/json/testdata/policy_canonical.json b/pkg/resource/json/testdata/policy_canonical.json
index b45b9194..74435ab0 100644
--- a/pkg/resource/json/testdata/policy_canonical.json
+++ b/pkg/resource/json/testdata/policy_canonical.json
@@ -1,4 +1 @@
-// SPDX-FileCopyrightText: 2024 The Crossplane Authors <https://crossplane.io>
-//
-// SPDX-License-Identifier: Apache-2.0
 {"AWSOwnedKey":true,"Rules":[{"Resource":["collection/example-collection-2"],"ResourceType":"collection"}]}
diff --git a/pkg/resource/json/testdata/policy_canonical.json.license b/pkg/resource/json/testdata/policy_canonical.json.license
new file mode 100644
index 00000000..b0dc8fc5
--- /dev/null
+++ b/pkg/resource/json/testdata/policy_canonical.json.license
@@ -0,0 +1,3 @@
+SPDX-FileCopyrightText: 2024 The Crossplane Authors <https://crossplane.io>
+
+SPDX-License-Identifier: Apache-2.0