Download PDF by James Arbuckle: Amos 4.0 Users Guide

By James Arbuckle

ISBN-10: 1568272642

ISBN-13: 9781568272641

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To end the stub method, we use will to tell the stubbed method what we want it to return. Understanding how to stub methods in the dependencies of the code you are trying to test is the number one skill that good testers learn. php Test Doubles 27 code, or that you have an object that is trying to do too much. Inception-level test stubs inside test stubs inside test stubs is an indication that you need to do some rethinking of your architecture. Expectations during execution Here is an example of a test that sets expectations for what a particular method should return when called multiple times.

Php class FizzBuzzTest extends PHPUnit_Framework_Testcase { public function setup() { $this->fb = new FizzBuzz(); } 8 9 10 11 12 13 14 15 public function testGetFizz() { $expected = 'Fizz'; $input = 3; $response = $this->fb->check($input); $this->assertEquals($expected, $response); } 16 17 18 19 20 21 22 23 public function testGetBuzz() { $expected = 'Buzz'; $input = 5; $response = $this->fb->check($input); $this->assertEquals($expected, $response); } Data Providers 39 24 public function testGetFizzBuzz() { $expected = 'FizzBuzz'; $input = 15; $response = $this->fb->check($input); $this->assertEquals($expected, $response); } 25 26 27 28 29 30 31 32 function testPassThru() { $expected = '1'; $input = 1; $response = $this->fb->check($input); $this->assertEquals($expected, $response); } 33 34 35 36 37 38 39 40 } I’m sure you can see the pattern: • multiple input values • tests that are extremely similar in setup and execution • same assertion being used over and over Creating Data Providers A data provider is another method inside your test class that returns an array of results, with each result set being an array itself.

10 by Sebastian Bergmann. 50Mb PHPUnit For Grumpy Developers 14 15 OK (26 tests, 79 assertions) 21 Test Doubles Why We Need Them When you are writing unit tests, you are writing tests to create scenarios where you control the inputs and want to verify that your code is returning expected results. Code you write often depends on other code: things like database handles or values from a globally-available registry. In order to write tests for code using these dependencies, you need to be able to set those dependencies to specific states in order to predict the expected result.

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Amos 4.0 Users Guide by James Arbuckle

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