How to test for equality in PHPUnit?

by darrion.kuhn , in category: PHP General , 7 months ago

How to test for equality in PHPUnit?

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1 answer

by raven_corwin , 7 months ago

@darrion.kuhn 

In PHPUnit, you can test for equality using various assertion methods provided by the PHPUnit_Framework_TestCase class. Here are some examples:

  1. Using assertEquals() method:
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$this->assertEquals($expected, $actual);


This method checks if the $expected value is equal to the $actual value. The comparison is done using the "== " operator, so type coercion might occur.

  1. Using assertSame() method:
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$this->assertSame($expected, $actual);


Similar to assertEquals(), this method checks if the $expected value is equal to the $actual value. However, it uses the "=== " operator, so type and value must be equal.

  1. Using assertEqualXMLStructure() method:
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$this->assertEqualXMLStructure($expected, $actual, $checkAttributes = false, $message = '');


This method is specifically used for comparing XML structures. It checks if two XML documents have the same structure and content.

  1. Using assertCount() method:
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$this->assertCount($expectedCount, $array);


This method checks if the $array contains the expected number of elements.

  1. Using assertEmpty() and assertNotEmpty() methods:
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$this->assertEmpty($value);
$this->assertNotEmpty($value);


These methods check if the $value is empty or not.


These are just a few examples of the assertion methods you can use in PHPUnit to test for equality. You can find more assertion methods in the PHPUnit documentation: https://phpunit.readthedocs.io/en/9.5/assertions.html