PHPUnit: How to Test a single Function in an Helper file

Question

I would like to test a new function in a helper file.

function isProductionSite() {
    return !(bool) preg_match('/admin|development/', request()->getHttpHost());
}

When I call this function in my test function I get my local address. Therefore I tried to mock the request()->getHttpHost.

public function testIsProductionSiteExpectFalse(): void
{
    $request = Mockery::mock(Request::class);
    $request->shouldReceive('getHttpHost')->once()->andReturn('admin.mydomain.de');
    $this->assertFalse(isProductionSite());
}

In the Tets Function $request->getHttpHost() would now output admin.mydomain.de. But getHttpHost() from the function to be tested (isProductionSite()) gives me the correct host.

How can I set the HttpHost in the testcase so that the helper function outputs the manipulated host?

gontrollez · Accepted Answer · 2021-05-04 07:50:56Z

1

You're mocking an instance of $request but the instance being used by the function under test is not the mock, but presumably a global variable.

Dependencies should always be passed to the helper function. Just add $request as a parameter of isProductionSite.

answered May 4, 2021 at 7:50

gontrollez

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2 Comments

Maik Lowrey Over a year ago

thank you for your answer and the good advice!

gontrollez Over a year ago

glad the answer was useful. Remember to mark the answer as accepted if you think it resolved the question.

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