Passed
Pull Request — master (#116)
by Théo
02:03
created

test_it_evaluates_the_check_lazily()   A

Complexity

Conditions 2
Paths 3

Size

Total Lines 16
Code Lines 10

Duplication

Lines 0
Ratio 0 %

Importance

Changes 0
Metric Value
dl 0
loc 16
rs 9.4285
c 0
b 0
f 0
cc 2
eloc 10
nc 3
nop 0
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<?php
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declare(strict_types=1);
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/*
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 * This file is part of the box project.
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 *
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 * (c) Kevin Herrera <[email protected]>
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 *     Théo Fidry <[email protected]>
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 *
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 * This source file is subject to the MIT license that is bundled
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 * with this source code in the file LICENSE.
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 */
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namespace KevinGH\RequirementChecker;
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use Error;
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use PHPUnit\Framework\TestCase;
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/**
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 * @covers \KevinGH\RequirementChecker\Requirement
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 */
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class RequirementTest extends TestCase
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{
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    public function test_it_can_be_created(): void
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    {
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        $requirement = new Requirement(
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            'return true;',
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            'Test message',
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            'Help message'
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        );
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        $this->assertSame('return true;', $requirement->getIsFullfilledChecker());
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        $this->assertTrue($requirement->isFulfilled());
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        $this->assertSame('Test message', $requirement->getTestMessage());
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        $this->assertSame('Help message', $requirement->getHelpText());
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    }
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    public function test_it_evaluates_the_check_lazily(): void
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    {
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        $requirement = new Requirement(
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            'throw new \Error();',
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            'Test message',
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            'Help message'
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        );
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        $this->assertSame('throw new \Error();', $requirement->getIsFullfilledChecker());
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        try {
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            $requirement->isFulfilled();
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            $this->fail('Expected exception to be thrown.');
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        } catch (Error $error) {
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            $this->assertTrue(true);
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        }
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    }
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    public function test_it_casts_the_fulfilled_result_into_a_boolean(): void
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    {
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        $requirement = new Requirement(
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            'return 1;',
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            '',
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            ''
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        );
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        $this->assertTrue($requirement->isFulfilled());
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        $requirement = new Requirement(
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            'return 0;',
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            '',
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            ''
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        );
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        $this->assertFalse($requirement->isFulfilled());
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        $requirement = new Requirement(
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            'return new \stdClass();',
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            '',
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            ''
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        );
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        $this->assertTrue($requirement->isFulfilled());
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    }
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    public function test_it_evaluates_the_check_only_once(): void
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    {
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        $GLOBALS['x'] = -1;
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        $requirement = new Requirement(
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            <<<'PHP'
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$GLOBALS['x']++;
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return $GLOBALS['x'];
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PHP
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            ,
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            'Test message',
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            'Help message'
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        );
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        $this->assertFalse($requirement->isFulfilled());
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        $this->assertFalse($requirement->isFulfilled());    // Would have gave `true` if it was evaluated a second time
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        unset($GLOBALS['x']);
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    }
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}
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