diff core/tests/Drupal/Tests/Component/Serialization/JsonTest.php @ 0:c75dbcec494b

Initial commit from drush-created site

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/core/tests/Drupal/Tests/Component/Serialization/JsonTest.php	Thu Jul 05 14:24:15 2018 +0000
@@ -0,0 +1,117 @@
+<?php
+
+namespace Drupal\Tests\Component\Serialization;
+
+use Drupal\Component\Serialization\Json;
+use PHPUnit\Framework\TestCase;
+
+/**
+ * @coversDefaultClass \Drupal\Component\Serialization\Json
+ * @group Serialization
+ */
+class JsonTest extends TestCase {
+
+  /**
+   * 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 = ['<', '>', '\'', '&'];
+    // The following are the encoded forms of: < > ' & "
+    $this->htmlUnsafeEscaped = ['\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.
+    $this->assertSame(127, strlen($this->string), '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 = [TRUE, FALSE, 0, 1, '0', '1', $this->string, ['key1' => $this->string, 'key2' => ['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.');
+  }
+
+}