<?php declare(strict_types=1);
/*
 * 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.
 */
namespace PHPUnit\Framework\Constraint;

use function preg_replace;
use function spl_object_hash;
use DateTime;
use DateTimeZone;
use DOMDocument;
use PHPUnit\Framework\ExpectationFailedException;
use PHPUnit\Framework\TestFailure;
use SplObjectStorage;
use stdClass;

/**
 * @small
 */
final class IsEqualTest extends ConstraintTestCase
{
    public function testConstraintIsEqual(): void
    {
        $constraint = new IsEqual(1);

        $this->assertTrue($constraint->evaluate(1, '', true));
        $this->assertFalse($constraint->evaluate(0, '', true));
        $this->assertEquals('is equal to 1', $constraint->toString());
        $this->assertCount(1, $constraint);

        try {
            $constraint->evaluate(0);
        } catch (ExpectationFailedException $e) {
            $this->assertEquals(
                <<<'EOF'
Failed asserting that 0 matches expected 1.

EOF
                ,
                TestFailure::exceptionToString($e)
            );

            return;
        }

        $this->fail();
    }

    /**
     * @dataProvider isEqualProvider
     */
    public function testConstraintIsEqual2($expected, $actual, $message): void
    {
        $constraint = new IsEqual($expected);

        try {
            $constraint->evaluate($actual, 'custom message');
        } catch (ExpectationFailedException $e) {
            $this->assertEquals(
                "custom message\n{$message}",
                $this->trimnl(TestFailure::exceptionToString($e))
            );

            return;
        }

        $this->fail();
    }

    public function testConstraintDeltaIsNotZero(): void
    {
        $constraint = new IsEqual(15, 1);

        $this->assertSame('is equal to 15 with delta <1.000000>', $constraint->toString());
    }

    public function isEqualProvider(): array
    {
        $a      = new stdClass;
        $a->foo = 'bar';
        $b      = new stdClass;
        $ahash  = spl_object_hash($a);
        $bhash  = spl_object_hash($b);

        $c               = new stdClass;
        $c->foo          = 'bar';
        $c->int          = 1;
        $c->array        = [0, [1], [2], 3];
        $c->related      = new stdClass;
        $c->related->foo = "a\nb\nc\nd\ne\nf\ng\nh\ni\nj\nk";
        $c->self         = $c;
        $c->c            = $c;
        $d               = new stdClass;
        $d->foo          = 'bar';
        $d->int          = 2;
        $d->array        = [0, [4], [2], 3];
        $d->related      = new stdClass;
        $d->related->foo = "a\np\nc\nd\ne\nf\ng\nh\ni\nw\nk";
        $d->self         = $d;
        $d->c            = $c;

        $storage1 = new SplObjectStorage;
        $storage1->attach($a);
        $storage1->attach($b);
        $storage2 = new SplObjectStorage;
        $storage2->attach($b);
        $storage1hash = spl_object_hash($storage1);
        $storage2hash = spl_object_hash($storage2);

        $dom1                     = new DOMDocument;
        $dom1->preserveWhiteSpace = false;
        $dom1->loadXML('<root></root>');
        $dom2                     = new DOMDocument;
        $dom2->preserveWhiteSpace = false;
        $dom2->loadXML('<root><foo/></root>');

        return [
            [1, 0, <<<'EOF'
Failed asserting that 0 matches expected 1.

EOF
            ],
            [1.1, 0, <<<'EOF'
Failed asserting that 0 matches expected 1.1.

EOF
            ],
            ['a', 'b', <<<'EOF'
Failed asserting that two strings are equal.
--- Expected
+++ Actual
@@ @@
-'a'
+'b'

EOF
            ],
            ["a\nb\nc\nd\ne\nf\ng\nh\ni\nj\nk", "a\np\nc\nd\ne\nf\ng\nh\ni\nw\nk", <<<'EOF'
Failed asserting that two strings are equal.
--- Expected
+++ Actual
@@ @@
 'a\n
-b\n
+p\n
 c\n
 d\n
 e\n
@@ @@
 g\n
 h\n
 i\n
-j\n
+w\n
 k'

EOF
            ],
            [1, [0], <<<'EOF'
Array (...) does not match expected type "integer".

EOF
            ],
            [[0], 1, <<<'EOF'
1 does not match expected type "array".

EOF
            ],
            [[0], [1], <<<'EOF'
Failed asserting that two arrays are equal.
--- Expected
+++ Actual
@@ @@
 Array (
-    0 => 0
+    0 => 1
 )

EOF
            ],
            [[true], ['true'], <<<'EOF'
Failed asserting that two arrays are equal.
--- Expected
+++ Actual
@@ @@
 Array (
-    0 => true
+    0 => 'true'
 )

EOF
            ],
            [[0, [1], [2], 3], [0, [4], [2], 3], <<<'EOF'
Failed asserting that two arrays are equal.
--- Expected
+++ Actual
@@ @@
 Array (
     0 => 0
     1 => Array (
-        0 => 1
+        0 => 4
     )
     2 => Array (...)
     3 => 3
 )

EOF
            ],
            [$a, [0], <<<'EOF'
Array (...) does not match expected type "object".

EOF
            ],
            [[0], $a, <<<'EOF'
stdClass Object (...) does not match expected type "array".

EOF
            ],
            [$a, $b, <<<'EOF'
Failed asserting that two objects are equal.
--- Expected
+++ Actual
@@ @@
 stdClass Object (
-    'foo' => 'bar'
 )

EOF
            ],
            [$c, $d, <<<'EOF'
Failed asserting that two objects are equal.
--- Expected
+++ Actual
@@ @@
 stdClass Object (
     'foo' => 'bar'
-    'int' => 1
+    'int' => 2
     'array' => Array (
         0 => 0
         1 => Array (
-            0 => 1
+            0 => 4
         )
         2 => Array (...)
         3 => 3
@@ @@
     )
     'related' => stdClass Object (
         'foo' => 'a\n
-        b\n
+        p\n
         c\n
         d\n
         e\n
@@ @@
         g\n
         h\n
         i\n
-        j\n
+        w\n
         k'
     )
     'self' => stdClass Object (...)
     'c' => stdClass Object (...)
 )

EOF
            ],
            [$dom1, $dom2, <<<'EOF'
Failed asserting that two DOM documents are equal.
--- Expected
+++ Actual
@@ @@
 <?xml version="1.0"?>
-<root/>
+<root>
+  <foo/>
+</root>

EOF
            ],
            [
                new DateTime('2013-03-29 04:13:35', new DateTimeZone('America/New_York')),
                new DateTime('2013-03-29 04:13:35', new DateTimeZone('America/Chicago')),
                <<<'EOF'
Failed asserting that two DateTime objects are equal.
--- Expected
+++ Actual
@@ @@
-2013-03-29T04:13:35.000000-0400
+2013-03-29T04:13:35.000000-0500

EOF
            ],
            [$storage1, $storage2, <<<EOF
Failed asserting that two objects are equal.
--- Expected
+++ Actual
@@ @@
-SplObjectStorage Object &{$storage1hash} (
-    '{$ahash}' => Array &0 (
-        'obj' => stdClass Object &{$ahash} (
-            'foo' => 'bar'
-        )
-        'inf' => null
-    )
-    '{$bhash}' => Array &1 (
+SplObjectStorage Object &{$storage2hash} (
+    '{$bhash}' => Array &0 (
         'obj' => stdClass Object &{$bhash} ()
         'inf' => null
     )
 )

EOF
            ],
        ];
    }

    /**
     * Removes spaces in front of newlines.
     *
     * @param string $string
     *
     * @return string
     */
    private function trimnl($string)
    {
        return preg_replace('/[ ]*\n/', "\n", $string);
    }
}