Drupal 8.0.0 beta 12. More info: https://www.drupal.org/node/2514176

core/tests/Drupal/Tests/Component/Serialization/JsonTest.php

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+<?php
+
+/**
+ * @file
+ * Contains \Drupal\Tests\Component\Serialization\JsonTest.
+ */
+
+namespace Drupal\Tests\Component\Serialization;
+
+use Drupal\Component\Serialization\Json;
+use Drupal\Tests\UnitTestCase;
+
+/**
+ * @coversDefaultClass \Drupal\Component\Serialization\Json
+ * @group Serialization
+ */
+class JsonTest extends UnitTestCase {
+
+  /**
+   * A test string with the full ASCII table.
+   *
+   * @var string
+   */
+  protected $string;
+
+  /**
+   * An array of unsafe html characters which has to be encoded.
+   *
+   * @var array
+   */
+  protected $htmlUnsafe;
+
+  /**
+   * An array of unsafe html characters which are already escaped.
+   *
+   * @var array
+   */
+  protected $htmlUnsafeEscaped;
+
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function setUp() {
+    parent::setUp();
+
+    // Setup a string with the full ASCII table.
+    // @todo: Add tests for non-ASCII characters and Unicode.
+    $this->string = '';
+    for ($i = 1; $i < 128; $i++) {
+      $this->string .= chr($i);
+    }
+
+    // Characters that must be escaped.
+    // We check for unescaped " separately.
+    $this->htmlUnsafe = array('<', '>', '\'', '&');
+    // The following are the encoded forms of: < > ' & "
+    $this->htmlUnsafeEscaped = array('\u003C', '\u003E', '\u0027', '\u0026', '\u0022');
+  }
+
+  /**
+   * Tests encoding for every ASCII character.
+   */
+  public function testEncodingAscii() {
+    // Verify there aren't character encoding problems with the source string.
+    $this->assertSame(strlen($this->string), 127, 'A string with the full ASCII table has the correct length.');
+    foreach ($this->htmlUnsafe as $char) {
+      $this->assertTrue(strpos($this->string, $char) > 0, sprintf('A string with the full ASCII table includes %s.', $char));
+    }
+  }
+
+  /**
+   * Tests encoding length.
+   */
+  public function testEncodingLength() {
+    // Verify that JSON encoding produces a string with all of the characters.
+    $json = Json::encode($this->string);
+    $this->assertTrue(strlen($json) > strlen($this->string), 'A JSON encoded string is larger than the source string.');
+  }
+
+  /**
+   * Tests end and start of the encoded string.
+   */
+  public function testEncodingStartEnd() {
+    $json = Json::encode($this->string);
+    // The first and last characters should be ", and no others.
+    $this->assertTrue($json[0] == '"', 'A JSON encoded string begins with ".');
+    $this->assertTrue($json[strlen($json) - 1] == '"', 'A JSON encoded string ends with ".');
+    $this->assertTrue(substr_count($json, '"') == 2, 'A JSON encoded string contains exactly two ".');
+  }
+
+  /**
+   * Tests converting PHP variables to JSON strings and back.
+   */
+  public function testReversibility() {
+    $json = Json::encode($this->string);
+    // Verify that encoding/decoding is reversible.
+    $json_decoded = Json::decode($json);
+    $this->assertSame($this->string, $json_decoded, 'Encoding a string to JSON and decoding back results in the original string.');
+  }
+
+  /**
+   * Test the reversibility of structured data
+   */
+  public function testStructuredReversibility() {
+    // Verify reversibility for structured data. Also verify that necessary
+    // characters are escaped.
+    $source = array(TRUE, FALSE, 0, 1, '0', '1', $this->string, array('key1' => $this->string, 'key2' => array('nested' => TRUE)));
+    $json = Json::encode($source);
+    foreach ($this->htmlUnsafe as $char) {
+      $this->assertTrue(strpos($json, $char) === FALSE, sprintf('A JSON encoded string does not contain %s.', $char));
+    }
+    // Verify that JSON encoding escapes the HTML unsafe characters
+    foreach ($this->htmlUnsafeEscaped as $char) {
+      $this->assertTrue(strpos($json, $char) > 0, sprintf('A JSON encoded string contains %s.', $char));
+    }
+    $json_decoded = Json::decode($json);
+    $this->assertNotSame($source, $json, 'An array encoded in JSON is identical to the source.');
+    $this->assertSame($source, $json_decoded, 'Encoding structured data to JSON and decoding back not results in the original data.');
+  }
+
+}

core/tests/Drupal/Tests/Component/Serialization/YamlTest.php

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+<?php
+
+/**
+ * @file
+ * Contains \Drupal\Tests\Component\Serialization\YamlTest.
+ */
+
+namespace Drupal\Tests\Component\Serialization;
+
+use Drupal\Component\Serialization\Yaml;
+use Drupal\Tests\UnitTestCase;
+
+/**
+ * @coversDefaultClass \Drupal\Component\Serialization\Yaml
+ * @group Serialization
+ */
+class YamlTest extends UnitTestCase {
+
+  /**
+   * @covers ::decode
+   */
+  public function testDecode() {
+    // Test that files without line break endings are properly interpreted.
+    $yaml = 'foo: bar';
+    $expected = array(
+      'foo' => 'bar',
+    );
+    $this->assertSame($expected, Yaml::decode($yaml));
+    $yaml .= "\n";
+    $this->assertSame($expected, Yaml::decode($yaml));
+    $yaml .= "\n";
+    $this->assertSame($expected, Yaml::decode($yaml));
+
+    $yaml = "{}\n";
+    $expected = array();
+    $this->assertSame($expected, Yaml::decode($yaml));
+
+    $yaml = '';
+    $this->assertNULL(Yaml::decode($yaml));
+    $yaml .= "\n";
+    $this->assertNULL(Yaml::decode($yaml));
+    $yaml .= "\n";
+    $this->assertNULL(Yaml::decode($yaml));
+  }
+
+  /**
+   * @covers ::encode
+   */
+  public function testEncode() {
+    $decoded = array(
+      'foo' => 'bar',
+    );
+    $this->assertSame('foo: bar' . "\n", Yaml::encode($decoded));
+  }
+
+  /**
+   * @covers ::getFileExtension
+   */
+  public function testGetFileExtension() {
+    $this->assertEquals('yml', Yaml::getFileExtension());
+  }
+
+}