PHPUnit assertStringStartsWith()函数
assertStringStartsWith()函数是 PHPUnit 中的内置函数,用于断言实际字符串是否以预期的前缀字符串开头。如果实际字符串以预期的前缀字符串开头,则此断言将返回 true,否则返回 false。如果为真,则断言的测试用例通过,否则测试用例失败。
句法:
assertStringStartsWith(string $prefix, string $string
[, string $message = ''])
参数:此函数接受三个参数,如上所述,如下所述:
- $expectedprefix:这个参数是代表期望前缀字符串的任何类型。
- $actualstring:这个参数是代表实际字符串的任何类型。
- $message:此参数采用字符串值。当测试用例失败时,此字符串消息显示为错误消息。
下面的例子说明了 PHPUnit 中的 assertStringStartsWith()函数:
示例 1:
PHP
assertStringStartsWith(
$expectedprefix,
$actualstring,
"actual string content start with expected
prefix content or not"
);
}
}
?>
PHP
assertStringStartsWith(
$expectedprefix,
$actualstring,
"actual string content start with expected
prefix content or not"
);
}
}
?>
输出:
PHPUnit 8.5.8 by Sebastian Bergmann and contributors.
F 1 / 1 (100%)
Time: 89 ms, Memory: 10.00 MB
There was 1 failure:
1) GeeksPhpunitTestCase::testNegativeTestcaseForassertStringStartsWith
actual string content start with expected prefix content or not
Failed asserting that 'agreedis' starts with "dis".
/home/lovely/Documents/php/test.php:17
FAILURES!
Tests: 1, Assertions: 1, Failures: 1.
示例 2:
PHP
assertStringStartsWith(
$expectedprefix,
$actualstring,
"actual string content start with expected
prefix content or not"
);
}
}
?>
输出:
PHPUnit 8.5.8 by Sebastian Bergmann and contributors.
. 1 / 1 (100%)
Time: 88 ms, Memory: 10.00 MB
OK (1 test, 1 assertion)
参考: https://phpunit.readthedocs.io/en/9.2/assertions.html#assertstringstartswith