Merge pull request #14 from chadicus/master

Add NullSerializer

src/Serializer/NullSerializer.php

@@ -0,0 +1,35 @@
+<?php
+
+namespace SubjectivePHP\Psr\SimpleCache\Serializer;
+
+use SubjectivePHP\Psr\SimpleCache\InvalidArgumentException;
+
+/**
+ * Serializer implementation that does nothing with the given data.
+ */
+final class NullSerializer implements SerializerInterface
+{
+    /**
+     * Unserializes cached data into the original state.
+     *
+     * @param mixed $data The data to unserialize.
+     *
+     * @return mixed
+     */
+    public function unserialize($data)
+    {
+        return $data;
+    }
+
+    /**
+     * Serializes the given data for storage in caching.
+     *
+     * @param mixed $value The data to serialize for caching.
+     *
+     * @return mixed The result of serializing the given $data.
+     */
+    public function serialize($value)
+    {
+        return $value;
+    }
+}

tests/Serializer/NullSerializerTest.php

@@ -0,0 +1,51 @@
+<?php
+
+namespace SubjectivePHPTest\Psr\SimpleCache\Serializer;
+
+use SubjectivePHP\Psr\SimpleCache\Serializer\NullSerializer;
+
+/**
+ * @coversDefaultClass \SubjectivePHP\Psr\SimpleCache\Serializer\NullSerializer
+ * @covers ::<private>
+ */
+final class NullSerializerTest extends \PHPUnit\Framework\TestCase
+{
+    /**
+     * @var NullSerializer
+     */
+    private $serializer;
+
+    /**
+     * Prepare each test
+     *
+     * @return void
+     */
+    public function setUp()
+    {
+        $this->serializer = new NullSerializer();
+    }
+
+    /**
+     * @test
+     * @covers ::unserialize
+     *
+     * @return void
+     */
+    public function unserialize()
+    {
+        $data = ['foo' => 'abc', 'bar' => 123];
+        $this->assertSame($data, $this->serializer->unserialize($data));
+    }
+
+    /**
+     * @test
+     * @covers ::serialize
+     *
+     * @return void
+     */
+    public function serialize()
+    {
+        $data = ['foo' => 'abc', 'bar' => 123];
+        $this->assertSame($data, $this->serializer->serialize($data));
+    }
+}