How to use annotations in PHPUnit tests?

by elisha_langworth , in category: PHP General , 7 months ago

How to use annotations in PHPUnit tests?

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1 answer

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by lottie , 7 months ago

@elisha_langworth 

PHPUnit provides various types of annotations that can be used to enhance and customize your test cases. Here are some common annotations and how to use them:

  1. @dataProvider: This annotation is used to provide data for parameterized tests. It can be used to run the same test method with different inputs and expected outputs.
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/**
 * @dataProvider dataProviderFunction
 */
public function testMyFunction($input, $expectedOutput) {
    // Test logic using input and assert against expected output
}

public function dataProviderFunction() {
    return [
        [1, 2],
        [3, 6],
        // Add more test cases with input and expected output
    ];
}


  1. @depends: This annotation is used to specify test dependencies. It allows you to specify that a test case depends on the successful completion of another test case.
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public function testFirst() {
    // Test logic
    $this->assertTrue(true);
    return 'some value';
}

/**
 * @depends testFirst
 */
public function testSecond($valueFromFirstTest) {
    // Test logic using the value returned from the first test
    $this->assertEquals('some value', $valueFromFirstTest);
}


  1. @group: This annotation is used to group test cases. It allows you to specify a group name, and then you can run tests based on these groups.
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/**
 * @group mygroup
 */
public function testMyFunction() {
    // Test logic
}

/**
 * @group mygroup
 */
public function testAnotherFunction() {
    // Test logic
}


To run tests based on groups, use the --group flag with the PHPUnit command. For example, vendor/bin/phpunit --group mygroup.


These are just a few examples of annotations in PHPUnit. For more information and other available annotations, refer to the PHPUnit documentation.