<?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;

use function preg_replace;
use ArrayObject;
use Countable;
use PHPUnit\Framework\Constraint\Count;
use PHPUnit\Framework\Constraint\SameSize;
use PHPUnit\TestFixture\ClassWithNonPublicAttributes;
use PHPUnit\TestFixture\DummyException;
use PHPUnit\TestFixture\TestIterator;
use PHPUnit\Util\Filter;
use stdClass;

/**
 * @small
 */
final class ConstraintTest extends TestCase
{
    public function testConstraintArrayNotHasKey(): void
    {
        $constraint = Assert::logicalNot(
            Assert::arrayHasKey(0)
        );

        $this->assertFalse($constraint->evaluate([0 => 1], '', true));
        $this->assertEquals('does not have the key 0', $constraint->toString());
        $this->assertCount(1, $constraint);

        try {
            $constraint->evaluate([0 => 1]);
        } catch (ExpectationFailedException $e) {
            $this->assertEquals(
                <<<'EOF'
Failed asserting that an array does not have the key 0.

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

            return;
        }

        $this->fail();
    }

    public function testConstraintArrayNotHasKey2(): void
    {
        $constraint = Assert::logicalNot(
            Assert::arrayHasKey(0)
        );

        try {
            $constraint->evaluate([0], 'custom message');
        } catch (ExpectationFailedException $e) {
            $this->assertEquals(
                <<<'EOF'
custom message
Failed asserting that an array does not have the key 0.

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

            return;
        }

        $this->fail();
    }

    public function testConstraintFileNotExists(): void
    {
        $file = TEST_FILES_PATH . 'ClassWithNonPublicAttributes.php';

        $constraint = Assert::logicalNot(
            Assert::fileExists()
        );

        $this->assertFalse($constraint->evaluate($file, '', true));
        $this->assertEquals('file does not exist', $constraint->toString());
        $this->assertCount(1, $constraint);

        try {
            $constraint->evaluate($file);
        } catch (ExpectationFailedException $e) {
            $this->assertEquals(
                <<<EOF
Failed asserting that file "{$file}" does not exist.

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

            return;
        }

        $this->fail();
    }

    public function testConstraintFileNotExists2(): void
    {
        $file = TEST_FILES_PATH . 'ClassWithNonPublicAttributes.php';

        $constraint = Assert::logicalNot(
            Assert::fileExists()
        );

        try {
            $constraint->evaluate($file, 'custom message');
        } catch (ExpectationFailedException $e) {
            $this->assertEquals(
                <<<EOF
custom message
Failed asserting that file "{$file}" does not exist.

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

            return;
        }

        $this->fail();
    }

    public function testConstraintNotGreaterThan(): void
    {
        $constraint = Assert::logicalNot(
            Assert::greaterThan(1)
        );

        $this->assertTrue($constraint->evaluate(1, '', true));
        $this->assertEquals('is not greater than 1', $constraint->toString());
        $this->assertCount(1, $constraint);

        try {
            $constraint->evaluate(2);
        } catch (ExpectationFailedException $e) {
            $this->assertEquals(
                <<<'EOF'
Failed asserting that 2 is not greater than 1.

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

            return;
        }

        $this->fail();
    }

    public function testConstraintNotGreaterThan2(): void
    {
        $constraint = Assert::logicalNot(
            Assert::greaterThan(1)
        );

        try {
            $constraint->evaluate(2, 'custom message');
        } catch (ExpectationFailedException $e) {
            $this->assertEquals(
                <<<'EOF'
custom message
Failed asserting that 2 is not greater than 1.

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

            return;
        }

        $this->fail();
    }

    public function testConstraintGreaterThanOrEqual(): void
    {
        $constraint = Assert::greaterThanOrEqual(1);

        $this->assertTrue($constraint->evaluate(1, '', true));
        $this->assertFalse($constraint->evaluate(0, '', true));
        $this->assertEquals('is equal to 1 or is greater than 1', $constraint->toString());
        $this->assertCount(2, $constraint);

        try {
            $constraint->evaluate(0);
        } catch (ExpectationFailedException $e) {
            $this->assertEquals(
                <<<'EOF'
Failed asserting that 0 is equal to 1 or is greater than 1.

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

            return;
        }

        $this->fail();
    }

    public function testConstraintGreaterThanOrEqual2(): void
    {
        $constraint = Assert::greaterThanOrEqual(1);

        try {
            $constraint->evaluate(0, 'custom message');
        } catch (ExpectationFailedException $e) {
            $this->assertEquals(
                <<<'EOF'
custom message
Failed asserting that 0 is equal to 1 or is greater than 1.

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

            return;
        }

        $this->fail();
    }

    public function testConstraintNotGreaterThanOrEqual(): void
    {
        $constraint = Assert::logicalNot(
            Assert::greaterThanOrEqual(1)
        );

        $this->assertFalse($constraint->evaluate(1, '', true));
        $this->assertEquals('not( is equal to 1 or is greater than 1 )', $constraint->toString());
        $this->assertCount(2, $constraint);

        try {
            $constraint->evaluate(1);
        } catch (ExpectationFailedException $e) {
            $this->assertEquals(
                <<<'EOF'
Failed asserting that not( 1 is equal to 1 or is greater than 1 ).

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

            return;
        }

        $this->fail();
    }

    public function testConstraintNotGreaterThanOrEqual2(): void
    {
        $constraint = Assert::logicalNot(
            Assert::greaterThanOrEqual(1)
        );

        try {
            $constraint->evaluate(1, 'custom message');
        } catch (ExpectationFailedException $e) {
            $this->assertEquals(
                <<<'EOF'
custom message
Failed asserting that not( 1 is equal to 1 or is greater than 1 ).

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

            return;
        }

        $this->fail();
    }

    public function testConstraintIsAnything(): void
    {
        $constraint = Assert::anything();

        $this->assertTrue($constraint->evaluate(null, '', true));
        $this->assertNull($constraint->evaluate(null));
        $this->assertEquals('is anything', $constraint->toString());
        $this->assertCount(0, $constraint);
    }

    public function testConstraintNotIsAnything(): void
    {
        $constraint = Assert::logicalNot(
            Assert::anything()
        );

        $this->assertFalse($constraint->evaluate(null, '', true));
        $this->assertEquals('is not anything', $constraint->toString());
        $this->assertCount(0, $constraint);

        try {
            $constraint->evaluate(null);
        } catch (ExpectationFailedException $e) {
            $this->assertEquals(
                <<<'EOF'
Failed asserting that null is not anything.

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

            return;
        }

        $this->fail();
    }

    public function testConstraintIsNotEqual(): void
    {
        $constraint = Assert::logicalNot(
            Assert::equalTo(1)
        );

        $this->assertTrue($constraint->evaluate(0, '', true));
        $this->assertFalse($constraint->evaluate(1, '', true));
        $this->assertEquals('is not equal to 1', $constraint->toString());
        $this->assertCount(1, $constraint);

        try {
            $constraint->evaluate(1);
        } catch (ExpectationFailedException $e) {
            $this->assertEquals(
                <<<'EOF'
Failed asserting that 1 is not equal to 1.

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

            return;
        }

        $this->fail();
    }

    public function testConstraintIsNotEqual2(): void
    {
        $constraint = Assert::logicalNot(
            Assert::equalTo(1)
        );

        try {
            $constraint->evaluate(1, 'custom message');
        } catch (ExpectationFailedException $e) {
            $this->assertEquals(
                <<<'EOF'
custom message
Failed asserting that 1 is not equal to 1.

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

            return;
        }

        $this->fail();
    }

    public function testConstraintIsNotIdentical(): void
    {
        $a = new stdClass;
        $b = new stdClass;

        $constraint = Assert::logicalNot(
            Assert::identicalTo($a)
        );

        $this->assertTrue($constraint->evaluate($b, '', true));
        $this->assertFalse($constraint->evaluate($a, '', true));
        $this->assertEquals('is not identical to an object of class "stdClass"', $constraint->toString());
        $this->assertCount(1, $constraint);

        try {
            $constraint->evaluate($a);
        } catch (ExpectationFailedException $e) {
            $this->assertEquals(
                <<<'EOF'
Failed asserting that two variables don't reference the same object.

EOF
                ,
                $this->trimnl(TestFailure::exceptionToString($e))
            );

            return;
        }

        $this->fail();
    }

    public function testConstraintIsNotIdentical2(): void
    {
        $a = new stdClass;

        $constraint = Assert::logicalNot(
            Assert::identicalTo($a)
        );

        try {
            $constraint->evaluate($a, 'custom message');
        } catch (ExpectationFailedException $e) {
            $this->assertEquals(
                <<<'EOF'
custom message
Failed asserting that two variables don't reference the same object.

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

            return;
        }

        $this->fail();
    }

    public function testConstraintIsNotIdentical3(): void
    {
        $constraint = Assert::logicalNot(
            Assert::identicalTo('a')
        );

        try {
            $constraint->evaluate('a', 'custom message');
        } catch (ExpectationFailedException $e) {
            $this->assertEquals(
                <<<'EOF'
custom message
Failed asserting that two strings are not identical.

EOF
                ,
                $this->trimnl(TestFailure::exceptionToString($e))
            );

            return;
        }

        $this->fail();
    }

    public function testConstraintIsInstanceOf(): void
    {
        $constraint = Assert::isInstanceOf(\Exception::class);

        $this->assertFalse($constraint->evaluate(new stdClass, '', true));
        $this->assertTrue($constraint->evaluate(new \Exception, '', true));
        $this->assertEquals('is instance of class "Exception"', $constraint->toString());
        $this->assertCount(1, $constraint);

        $interfaceConstraint = Assert::isInstanceOf(Countable::class);
        $this->assertFalse($interfaceConstraint->evaluate(new stdClass, '', true));
        $this->assertTrue($interfaceConstraint->evaluate(new ArrayObject, '', true));
        $this->assertEquals('is instance of interface "Countable"', $interfaceConstraint->toString());

        try {
            $constraint->evaluate(new stdClass);
        } catch (ExpectationFailedException $e) {
            $this->assertEquals(
                <<<'EOF'
Failed asserting that stdClass Object () is an instance of class "Exception".

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

            return;
        }

        $this->fail();
    }

    public function testConstraintIsInstanceOf2(): void
    {
        $constraint = Assert::isInstanceOf(\Exception::class);

        try {
            $constraint->evaluate(new stdClass, 'custom message');
        } catch (ExpectationFailedException $e) {
            $this->assertEquals(
                <<<'EOF'
custom message
Failed asserting that stdClass Object () is an instance of class "Exception".

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

            return;
        }

        $this->fail();
    }

    public function testConstraintIsNotInstanceOf(): void
    {
        $constraint = Assert::logicalNot(
            Assert::isInstanceOf(stdClass::class)
        );

        $this->assertFalse($constraint->evaluate(new stdClass, '', true));
        $this->assertTrue($constraint->evaluate(new Exception, '', true));
        $this->assertEquals('is not instance of class "stdClass"', $constraint->toString());
        $this->assertCount(1, $constraint);

        try {
            $constraint->evaluate(new stdClass);
        } catch (ExpectationFailedException $e) {
            $this->assertEquals(
                <<<'EOF'
Failed asserting that stdClass Object () is not an instance of class "stdClass".

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

            return;
        }

        $this->fail();
    }

    public function testConstraintIsNotInstanceOf2(): void
    {
        $constraint = Assert::logicalNot(
            Assert::isInstanceOf(stdClass::class)
        );

        try {
            $constraint->evaluate(new stdClass, 'custom message');
        } catch (ExpectationFailedException $e) {
            $this->assertEquals(
                <<<'EOF'
custom message
Failed asserting that stdClass Object () is not an instance of class "stdClass".

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

            return;
        }

        $this->fail();
    }

    public function testConstraintIsNotType(): void
    {
        $constraint = Assert::logicalNot(
            Assert::isType('string')
        );

        $this->assertTrue($constraint->evaluate(0, '', true));
        $this->assertFalse($constraint->evaluate('', '', true));
        $this->assertEquals('is not of type "string"', $constraint->toString());
        $this->assertCount(1, $constraint);

        try {
            $constraint->evaluate('');
        } catch (ExpectationFailedException $e) {
            $this->assertEquals(
                <<<'EOF'
Failed asserting that '' is not of type "string".

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

            return;
        }

        $this->fail();
    }

    public function testConstraintIsNotType2(): void
    {
        $constraint = Assert::logicalNot(
            Assert::isType('string')
        );

        try {
            $constraint->evaluate('', 'custom message');
        } catch (ExpectationFailedException $e) {
            $this->assertEquals(
                <<<'EOF'
custom message
Failed asserting that '' is not of type "string".

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

            return;
        }

        $this->fail();
    }

    public function testConstraintIsNotNull(): void
    {
        $constraint = Assert::logicalNot(
            Assert::isNull()
        );

        $this->assertFalse($constraint->evaluate(null, '', true));
        $this->assertTrue($constraint->evaluate(0, '', true));
        $this->assertEquals('is not null', $constraint->toString());
        $this->assertCount(1, $constraint);

        try {
            $constraint->evaluate(null);
        } catch (ExpectationFailedException $e) {
            $this->assertEquals(
                <<<'EOF'
Failed asserting that null is not null.

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

            return;
        }

        $this->fail();
    }

    public function testConstraintIsNotNull2(): void
    {
        $constraint = Assert::logicalNot(
            Assert::isNull()
        );

        try {
            $constraint->evaluate(null, 'custom message');
        } catch (ExpectationFailedException $e) {
            $this->assertEquals(
                <<<'EOF'
custom message
Failed asserting that null is not null.

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

            return;
        }

        $this->fail();
    }

    public function testConstraintNotLessThan(): void
    {
        $constraint = Assert::logicalNot(
            Assert::lessThan(1)
        );

        $this->assertTrue($constraint->evaluate(1, '', true));
        $this->assertFalse($constraint->evaluate(0, '', true));
        $this->assertEquals('is not less than 1', $constraint->toString());
        $this->assertCount(1, $constraint);

        try {
            $constraint->evaluate(0);
        } catch (ExpectationFailedException $e) {
            $this->assertEquals(
                <<<'EOF'
Failed asserting that 0 is not less than 1.

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

            return;
        }

        $this->fail();
    }

    public function testConstraintNotLessThan2(): void
    {
        $constraint = Assert::logicalNot(
            Assert::lessThan(1)
        );

        try {
            $constraint->evaluate(0, 'custom message');
        } catch (ExpectationFailedException $e) {
            $this->assertEquals(
                <<<'EOF'
custom message
Failed asserting that 0 is not less than 1.

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

            return;
        }

        $this->fail();
    }

    public function testConstraintLessThanOrEqual(): void
    {
        $constraint = Assert::lessThanOrEqual(1);

        $this->assertTrue($constraint->evaluate(1, '', true));
        $this->assertFalse($constraint->evaluate(2, '', true));
        $this->assertEquals('is equal to 1 or is less than 1', $constraint->toString());
        $this->assertCount(2, $constraint);

        try {
            $constraint->evaluate(2);
        } catch (ExpectationFailedException $e) {
            $this->assertEquals(
                <<<'EOF'
Failed asserting that 2 is equal to 1 or is less than 1.

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

            return;
        }

        $this->fail();
    }

    public function testConstraintLessThanOrEqual2(): void
    {
        $constraint = Assert::lessThanOrEqual(1);

        try {
            $constraint->evaluate(2, 'custom message');
        } catch (ExpectationFailedException $e) {
            $this->assertEquals(
                <<<'EOF'
custom message
Failed asserting that 2 is equal to 1 or is less than 1.

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

            return;
        }

        $this->fail();
    }

    public function testConstraintNotLessThanOrEqual(): void
    {
        $constraint = Assert::logicalNot(
            Assert::lessThanOrEqual(1)
        );

        $this->assertTrue($constraint->evaluate(2, '', true));
        $this->assertFalse($constraint->evaluate(1, '', true));
        $this->assertEquals('not( is equal to 1 or is less than 1 )', $constraint->toString());
        $this->assertCount(2, $constraint);

        try {
            $constraint->evaluate(1);
        } catch (ExpectationFailedException $e) {
            $this->assertEquals(
                <<<'EOF'
Failed asserting that not( 1 is equal to 1 or is less than 1 ).

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

            return;
        }

        $this->fail();
    }

    public function testConstraintNotLessThanOrEqual2(): void
    {
        $constraint = Assert::logicalNot(
            Assert::lessThanOrEqual(1)
        );

        try {
            $constraint->evaluate(1, 'custom message');
        } catch (ExpectationFailedException $e) {
            $this->assertEquals(
                <<<'EOF'
custom message
Failed asserting that not( 1 is equal to 1 or is less than 1 ).

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

            return;
        }

        $this->fail();
    }

    public function testConstraintClassNotHasAttribute(): void
    {
        $constraint = Assert::logicalNot(
            Assert::classHasAttribute('privateAttribute')
        );

        $this->assertTrue($constraint->evaluate(stdClass::class, '', true));
        $this->assertFalse($constraint->evaluate(ClassWithNonPublicAttributes::class, '', true));
        $this->assertEquals('does not have attribute "privateAttribute"', $constraint->toString());
        $this->assertCount(1, $constraint);

        try {
            $constraint->evaluate(ClassWithNonPublicAttributes::class);
        } catch (ExpectationFailedException $e) {
            $this->assertEquals(
                <<<EOF
Failed asserting that class "PHPUnit\TestFixture\ClassWithNonPublicAttributes" does not have attribute "privateAttribute".

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

            return;
        }

        $this->fail();
    }

    public function testConstraintClassNotHasAttribute2(): void
    {
        $constraint = Assert::logicalNot(
            Assert::classHasAttribute('privateAttribute')
        );

        try {
            $constraint->evaluate(ClassWithNonPublicAttributes::class, 'custom message');
        } catch (ExpectationFailedException $e) {
            $this->assertEquals(
                <<<EOF
custom message
Failed asserting that class "PHPUnit\TestFixture\ClassWithNonPublicAttributes" does not have attribute "privateAttribute".

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

            return;
        }

        $this->fail();
    }

    public function testConstraintClassNotHasStaticAttribute(): void
    {
        $constraint = Assert::logicalNot(
            Assert::classHasStaticAttribute('privateStaticAttribute')
        );

        $this->assertTrue($constraint->evaluate(stdClass::class, '', true));
        $this->assertFalse($constraint->evaluate(ClassWithNonPublicAttributes::class, '', true));
        $this->assertEquals('does not have static attribute "privateStaticAttribute"', $constraint->toString());
        $this->assertCount(1, $constraint);

        try {
            $constraint->evaluate(ClassWithNonPublicAttributes::class);
        } catch (ExpectationFailedException $e) {
            $this->assertEquals(
                <<<EOF
Failed asserting that class "PHPUnit\TestFixture\ClassWithNonPublicAttributes" does not have static attribute "privateStaticAttribute".

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

            return;
        }

        $this->fail();
    }

    public function testConstraintClassNotHasStaticAttribute2(): void
    {
        $constraint = Assert::logicalNot(
            Assert::classHasStaticAttribute('privateStaticAttribute')
        );

        try {
            $constraint->evaluate(ClassWithNonPublicAttributes::class, 'custom message');
        } catch (ExpectationFailedException $e) {
            $this->assertEquals(
                <<<EOF
custom message
Failed asserting that class "PHPUnit\TestFixture\ClassWithNonPublicAttributes" does not have static attribute "privateStaticAttribute".

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

            return;
        }

        $this->fail();
    }

    public function testConstraintObjectNotHasAttribute(): void
    {
        $constraint = Assert::logicalNot(
            Assert::objectHasAttribute('privateAttribute')
        );

        $this->assertTrue($constraint->evaluate(new stdClass, '', true));
        $this->assertFalse($constraint->evaluate(new ClassWithNonPublicAttributes, '', true));
        $this->assertEquals('does not have attribute "privateAttribute"', $constraint->toString());
        $this->assertCount(1, $constraint);

        try {
            $constraint->evaluate(new ClassWithNonPublicAttributes);
        } catch (ExpectationFailedException $e) {
            $this->assertEquals(
                <<<EOF
Failed asserting that object of class "PHPUnit\TestFixture\ClassWithNonPublicAttributes" does not have attribute "privateAttribute".

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

            return;
        }

        $this->fail();
    }

    public function testConstraintObjectNotHasAttribute2(): void
    {
        $constraint = Assert::logicalNot(
            Assert::objectHasAttribute('privateAttribute')
        );

        try {
            $constraint->evaluate(new ClassWithNonPublicAttributes, 'custom message');
        } catch (ExpectationFailedException $e) {
            $this->assertEquals(
                <<<EOF
custom message
Failed asserting that object of class "PHPUnit\TestFixture\ClassWithNonPublicAttributes" does not have attribute "privateAttribute".

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

            return;
        }

        $this->fail();
    }

    /**
     * @testdox Constraint PCRE not match
     */
    public function testConstraintPCRENotMatch(): void
    {
        $constraint = Assert::logicalNot(
            Assert::matchesRegularExpression('/foo/')
        );

        $this->assertTrue($constraint->evaluate('barbazbar', '', true));
        $this->assertFalse($constraint->evaluate('barfoobar', '', true));
        $this->assertEquals('does not match PCRE pattern "/foo/"', $constraint->toString());
        $this->assertCount(1, $constraint);

        try {
            $constraint->evaluate('barfoobar');
        } catch (ExpectationFailedException $e) {
            $this->assertEquals(
                <<<'EOF'
Failed asserting that 'barfoobar' does not match PCRE pattern "/foo/".

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

            return;
        }

        $this->fail();
    }

    /**
     * @testdox Constraint PCRE not match with custom message
     */
    public function testConstraintPCRENotMatch2(): void
    {
        $constraint = Assert::logicalNot(
            Assert::matchesRegularExpression('/foo/')
        );

        try {
            $constraint->evaluate('barfoobar', 'custom message');
        } catch (ExpectationFailedException $e) {
            $this->assertEquals(
                <<<'EOF'
custom message
Failed asserting that 'barfoobar' does not match PCRE pattern "/foo/".

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

            return;
        }

        $this->fail();
    }

    public function testConstraintStringStartsNotWith(): void
    {
        $constraint = Assert::logicalNot(
            Assert::stringStartsWith('prefix')
        );

        $this->assertTrue($constraint->evaluate('foo', '', true));
        $this->assertFalse($constraint->evaluate('prefixfoo', '', true));
        $this->assertEquals('starts not with "prefix"', $constraint->toString());
        $this->assertCount(1, $constraint);

        try {
            $constraint->evaluate('prefixfoo');
        } catch (ExpectationFailedException $e) {
            $this->assertEquals(
                <<<'EOF'
Failed asserting that 'prefixfoo' starts not with "prefix".

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

            return;
        }

        $this->fail();
    }

    public function testConstraintStringStartsNotWith2(): void
    {
        $constraint = Assert::logicalNot(
            Assert::stringStartsWith('prefix')
        );

        try {
            $constraint->evaluate('prefixfoo', 'custom message');
        } catch (ExpectationFailedException $e) {
            $this->assertEquals(
                <<<'EOF'
custom message
Failed asserting that 'prefixfoo' starts not with "prefix".

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

            return;
        }

        $this->fail();
    }

    public function testConstraintStringNotContains(): void
    {
        $constraint = Assert::logicalNot(
            Assert::stringContains('foo')
        );

        $this->assertTrue($constraint->evaluate('barbazbar', '', true));
        $this->assertFalse($constraint->evaluate('barfoobar', '', true));
        $this->assertEquals('does not contain "foo"', $constraint->toString());
        $this->assertCount(1, $constraint);

        try {
            $constraint->evaluate('barfoobar');
        } catch (ExpectationFailedException $e) {
            $this->assertEquals(
                <<<'EOF'
Failed asserting that 'barfoobar' does not contain "foo".

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

            return;
        }

        $this->fail();
    }

    public function testConstraintStringNotContainsWhenIgnoreCase(): void
    {
        $constraint = Assert::logicalNot(
            Assert::stringContains('oryginał')
        );

        $this->assertTrue($constraint->evaluate('original', '', true));
        $this->assertFalse($constraint->evaluate('ORYGINAŁ', '', true));
        $this->assertFalse($constraint->evaluate('oryginał', '', true));
        $this->assertEquals('does not contain "oryginał"', $constraint->toString());
        $this->assertCount(1, $constraint);

        $this->expectException(ExpectationFailedException::class);

        $constraint->evaluate('ORYGINAŁ');
    }

    public function testConstraintStringNotContainsForUtf8StringWhenNotIgnoreCase(): void
    {
        $constraint = Assert::logicalNot(
            Assert::stringContains('oryginał', false)
        );

        $this->assertTrue($constraint->evaluate('original', '', true));
        $this->assertTrue($constraint->evaluate('ORYGINAŁ', '', true));
        $this->assertFalse($constraint->evaluate('oryginał', '', true));
        $this->assertEquals('does not contain "oryginał"', $constraint->toString());
        $this->assertCount(1, $constraint);

        $this->expectException(ExpectationFailedException::class);

        $constraint->evaluate('oryginał');
    }

    public function testConstraintStringNotContains2(): void
    {
        $constraint = Assert::logicalNot(
            Assert::stringContains('foo')
        );

        try {
            $constraint->evaluate('barfoobar', 'custom message');
        } catch (ExpectationFailedException $e) {
            $this->assertEquals(
                <<<'EOF'
custom message
Failed asserting that 'barfoobar' does not contain "foo".

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

            return;
        }

        $this->fail();
    }

    public function testConstraintStringEndsNotWith(): void
    {
        $constraint = Assert::logicalNot(
            Assert::stringEndsWith('suffix')
        );

        $this->assertTrue($constraint->evaluate('foo', '', true));
        $this->assertFalse($constraint->evaluate('foosuffix', '', true));
        $this->assertEquals('ends not with "suffix"', $constraint->toString());
        $this->assertCount(1, $constraint);

        try {
            $constraint->evaluate('foosuffix');
        } catch (ExpectationFailedException $e) {
            $this->assertEquals(
                <<<'EOF'
Failed asserting that 'foosuffix' ends not with "suffix".

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

            return;
        }

        $this->fail();
    }

    public function testConstraintStringEndsNotWith2(): void
    {
        $constraint = Assert::logicalNot(
            Assert::stringEndsWith('suffix')
        );

        try {
            $constraint->evaluate('foosuffix', 'custom message');
        } catch (ExpectationFailedException $e) {
            $this->assertEquals(
                <<<'EOF'
custom message
Failed asserting that 'foosuffix' ends not with "suffix".

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

            return;
        }

        $this->fail();
    }

    public function testConstraintCountWithAnArray(): void
    {
        $constraint = new Count(5);

        $this->assertTrue($constraint->evaluate([1, 2, 3, 4, 5], '', true));
        $this->assertFalse($constraint->evaluate([1, 2, 3, 4], '', true));
    }

    public function testConstraintCountWithAnIteratorWhichDoesNotImplementCountable(): void
    {
        $constraint = new Count(5);

        $this->assertTrue($constraint->evaluate(new TestIterator([1, 2, 3, 4, 5]), '', true));
        $this->assertFalse($constraint->evaluate(new TestIterator([1, 2, 3, 4]), '', true));
    }

    public function testConstraintCountWithAnObjectImplementingCountable(): void
    {
        $constraint = new Count(5);

        $this->assertTrue($constraint->evaluate(new ArrayObject([1, 2, 3, 4, 5]), '', true));
        $this->assertFalse($constraint->evaluate(new ArrayObject([1, 2, 3, 4]), '', true));
    }

    public function testConstraintCountFailing(): void
    {
        $constraint = new Count(5);

        try {
            $constraint->evaluate([1, 2]);
        } catch (ExpectationFailedException $e) {
            $this->assertEquals(
                <<<'EOF'
Failed asserting that actual size 2 matches expected size 5.

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

            return;
        }

        $this->fail();
    }

    public function testConstraintNotCountFailing(): void
    {
        $constraint = Assert::logicalNot(
            new Count(2)
        );

        try {
            $constraint->evaluate([1, 2]);
        } catch (ExpectationFailedException $e) {
            $this->assertEquals(
                <<<'EOF'
Failed asserting that actual size 2 does not match expected size 2.

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

            return;
        }

        $this->fail();
    }

    public function testConstraintNotSameSizeFailing(): void
    {
        $constraint = Assert::logicalNot(
            new SameSize([1, 2])
        );

        try {
            $constraint->evaluate([3, 4]);
        } catch (ExpectationFailedException $e) {
            $this->assertEquals(
                <<<'EOF'
Failed asserting that actual size 2 does not match expected size 2.

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

            return;
        }

        $this->fail();
    }

    public function testConstraintException(): void
    {
        $constraint = new Constraint\Exception('FoobarException');
        $exception  = new DummyException('Test');
        $stackTrace = Filter::getFilteredStacktrace($exception);

        try {
            $constraint->evaluate($exception);
        } catch (ExpectationFailedException $e) {
            $this->assertEquals(
                <<<EOF
Failed asserting that exception of type "PHPUnit\TestFixture\DummyException" matches expected exception "FoobarException". Message was: "Test" at
{$stackTrace}.

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

            return;
        }

        $this->fail();
    }

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