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phpunit断言-assertEqualsWithDelta

发布时间：2021-10-02 17:41:49编辑：雪饮阅读（）

 assertEqualsWithDelta断言呢主要是断言预期值与实际值的差值的绝对值是否大于某个值，若大于这某个值，则断言失败，否则成功。

EqualsWithDeltaTest.php：
<?php declare(strict_types=1);
use PHPUnit\Framework\TestCase;

final class EqualsWithDeltaTest extends TestCase
{
    public function testFailure()
    {
        $this->assertEqualsWithDelta(1.0, 1.5, 0.1);
    }
    public function testSuccess()
    {
        $this->assertEqualsWithDelta(1.0, 1.5, 0.5);
    }
    public function testThree()
    {
        $this->assertEqualsWithDelta(1.0, 1.5, 2);
    }
}
运行结果：
C:\Users\Administrator>D:\phpstudy_pro\Extensions\php\php7.3.4nts\php.exe C:\Users\Administrator\PhpstormProjects\untitled\vendor\phpunit\phpunit\phpunit -c C:\Users\Administrator\PhpstormProjects\untitled\organizing\phpunit.xml C:\Users\Administrator\PhpstormProjects\untitled\organizing\tests\EqualsWithDeltaTest.php
PHPUnit 9.5.8 by Sebastian Bergmann and contributors.
 
F..                                                                 3 / 3 (100%)
 
Time: 00:00.010, Memory: 4.00 MB
 
There was 1 failure:
 
1) EqualsWithDeltaTest::testFailure
Failed asserting that 1.5 matches expected 1.0.
 
C:\Users\Administrator\PhpstormProjects\untitled\organizing\tests\EqualsWithDeltaTest.php:8
 
FAILURES!
Tests: 3, Assertions: 3, Failures: 1.