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[yaffs-website] / vendor / phpunit / phpunit / src / Framework / Constraint / IsIdentical.php

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+<?php
+/*
+ * This file is part of PHPUnit.
+ *
+ * (c) Sebastian Bergmann <sebastian@phpunit.de>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Constraint that asserts that one value is identical to another.
+ *
+ * Identical check is performed with PHP's === operator, the operator is
+ * explained in detail at
+ * {@url http://www.php.net/manual/en/types.comparisons.php}.
+ * Two values are identical if they have the same value and are of the same
+ * type.
+ *
+ * The expected value is passed in the constructor.
+ *
+ * @since Class available since Release 3.0.0
+ */
+class PHPUnit_Framework_Constraint_IsIdentical extends PHPUnit_Framework_Constraint
+{
+    /**
+     * @var float
+     */
+    const EPSILON = 0.0000000001;
+
+    /**
+     * @var mixed
+     */
+    protected $value;
+
+    /**
+     * @param mixed $value
+     */
+    public function __construct($value)
+    {
+        parent::__construct();
+        $this->value = $value;
+    }
+
+    /**
+     * Evaluates the constraint for parameter $other
+     *
+     * If $returnResult is set to false (the default), an exception is thrown
+     * in case of a failure. null is returned otherwise.
+     *
+     * If $returnResult is true, the result of the evaluation is returned as
+     * a boolean value instead: true in case of success, false in case of a
+     * failure.
+     *
+     * @param mixed  $other        Value or object to evaluate.
+     * @param string $description  Additional information about the test
+     * @param bool   $returnResult Whether to return a result or throw an exception
+     *
+     * @return mixed
+     *
+     * @throws PHPUnit_Framework_ExpectationFailedException
+     */
+    public function evaluate($other, $description = '', $returnResult = false)
+    {
+        if (is_double($this->value) && is_double($other) &&
+            !is_infinite($this->value) && !is_infinite($other) &&
+            !is_nan($this->value) && !is_nan($other)) {
+            $success = abs($this->value - $other) < self::EPSILON;
+        } else {
+            $success = $this->value === $other;
+        }
+
+        if ($returnResult) {
+            return $success;
+        }
+
+        if (!$success) {
+            $f = null;
+
+            // if both values are strings, make sure a diff is generated
+            if (is_string($this->value) && is_string($other)) {
+                $f = new SebastianBergmann\Comparator\ComparisonFailure(
+                    $this->value,
+                    $other,
+                    $this->value,
+                    $other
+                );
+            }
+
+            $this->fail($other, $description, $f);
+        }
+    }
+
+    /**
+     * Returns the description of the failure
+     *
+     * The beginning of failure messages is "Failed asserting that" in most
+     * cases. This method should return the second part of that sentence.
+     *
+     * @param mixed $other Evaluated value or object.
+     *
+     * @return string
+     */
+    protected function failureDescription($other)
+    {
+        if (is_object($this->value) && is_object($other)) {
+            return 'two variables reference the same object';
+        }
+
+        if (is_string($this->value) && is_string($other)) {
+            return 'two strings are identical';
+        }
+
+        return parent::failureDescription($other);
+    }
+
+    /**
+     * Returns a string representation of the constraint.
+     *
+     * @return string
+     */
+    public function toString()
+    {
+        if (is_object($this->value)) {
+            return 'is identical to an object of class "' .
+                   get_class($this->value) . '"';
+        } else {
+            return 'is identical to ' .
+                   $this->exporter->export($this->value);
+        }
+    }
+}