unit-testing – Page 35

How to start working with GTest and CMake

November 19, 2022 by Tarik

The solution involved putting the gtest source directory as a subdirectory of your project. I’ve included the working CMakeLists.txt below if it is helpful to anyone. cmake_minimum_required(VERSION 2.6) project(basic_test) ################################ # GTest ################################ ADD_SUBDIRECTORY (gtest-1.6.0) enable_testing() include_directories(${gtest_SOURCE_DIR}/include ${gtest_SOURCE_DIR}) ################################ # Unit Tests ################################ # Add test cpp file add_executable( runUnitTests testgtest.cpp ) # Link test … Read more

Unit testing code with a file system dependency

November 18, 2022 by Tarik

Yay! Now it’s testable; I can feed in test doubles (mocks) to the DoIt method. But at what cost? I’ve now had to define 3 new interfaces just to make this testable. And what, exactly, am I testing? I’m testing that my DoIt function properly interacts with its dependencies. It doesn’t test that the zip … Read more

Testing Abstract Classes

November 18, 2022 by Tarik

Unit testing of abstract classes doesn’t necessary mean testing the interface, as abstract classes can have concrete methods, and this concrete methods can be tested. It is not so uncommon, when writing some library code, to have certain base class that you expect to extend in your application layer. And if you want to make … Read more

How can I do test setup using the testing package in Go

November 15, 2022 by Tarik

Starting with Go 1.4 you can implement setup/teardown (no need to copy your functions before/after each test). The documentation is outlined here in the Main section: TestMain runs in the main goroutine and can do whatever setup and teardown is necessary around a call to m.Run. It should then call os.Exit with the result of … Read more

How can I unit test a GUI?

November 15, 2022 by Tarik

Designs like MVP and MVC typically try to abstract as much logic out of the actual GUI as possible. One very popular article about this is “The Humble Dialog Box” by Michael Feathers. Personally I’ve had mixed experiences with trying to move logic out of the UI – sometimes it’s worked very well, and at … Read more

“Error: No provider for router” while writing Karma-Jasmine unit test cases

November 13, 2022 by Tarik

You need to import RouterTestingModule when setting up the test module. /* tslint:disable:no-unused-variable */ import { async, ComponentFixture, TestBed } from ‘@angular/core/testing’; import { By } from ‘@angular/platform-browser’; import { DebugElement } from ‘@angular/core’; import { RouterTestingModule } from ‘@angular/router/testing’; import { MyNewComponentComponent } from ‘./my-new-component.component’; describe(‘MyNewComponentComponent’, () => { let component: MyNewComponentComponent; let fixture: … Read more

Should unit tests be written for getter and setters?

November 11, 2022 by Tarik

I would say no. @Will said you should aim for 100% code coverage, but in my opinion that’s a dangerous distraction. You can write unit tests that have 100% coverage, and yet test absolutely nothing. Unit tests are there to test the behaviour of your code, in an expressive and meaningful way, and getters/setters are … Read more

Visual Studio 2015 or 2017 does not discover unit tests

October 26, 2022 by Tarik

To my surprise, clearing temp files located in the %TEMP% directory resolved the issue for me. Note: This path is generally at C:\Users\(yourusername)\AppData\Local\Temp As @Warren-P included, you can navigate to the temp folder by putting in %temp% in Start Menu, or launch “File Explorer” and enter %temp% in the address bar.

Mocking vs. Spying in mocking frameworks

October 25, 2022 by Tarik

Mock object replace mocked class entirely, returning recorded or default values. You can create mock out of “thin air”. This is what is mostly used during unit testing. When spying, you take an existing object and “replace” only some methods. This is useful when you have a huge class and only want to mock certain … Read more

Random data in Unit Tests?

October 24, 2022 by Tarik

There’s a compromise. Your coworker is actually onto something, but I think he’s doing it wrong. I’m not sure that totally random testing is very useful, but it’s certainly not invalid. A program (or unit) specification is a hypothesis that there exists some program that meets it. The program itself is then evidence of that … Read more