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I have summarized the solution for when an "undefined-method" error occurs while testing with PHPUnit in Laravel.

Error Message

There was 1 error:
1) Tests\Unit\PostItemTest::testgetPosts
Error: Call to undefined method Tests\Unit\PostItemTest::get()

Solution

The error message indicates that the function cannot be found.

While specific to PHPunit, this error occurs when the naming conventions are not followed. Please try making the following changes:

Starting the function name with test_

public function test_getPosts()
{

}

Adding @test annotation

    /**
     *
     * @test
     * @return void
     */
    public function getPosts()
    {

    }

By writing it like this, the "function not found" error should be resolved.

Tips

You can write function names in Japanese.

Writing in Japanese can make it easier to understand when tests don't pass.

public function test_どこのなんのテスト()
{

}

Conclusion

That's all for now.

I hope this can be helpful for someone.

For feedback or complaints, please contact me via Twitter DM.

Thank you!

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