Different db for testing in Django?
In your settings.py (or local_settings.py): import sys if ‘test’ in sys.argv: DATABASES[‘default’] = { ‘ENGINE’: ‘django.db.backends.sqlite3’, ‘NAME’: ‘mydatabase’ }
unit-testing
JUnit test with dynamic number of tests
Take a look at Parameterized Tests in JUnit 4. Actually I did this a few days ago. I’ll try to explain … First build your test class normally, as you where just testing with one input file. Decorate your class with: @RunWith(Parameterized.class) Build one constructor that takes the input that will change in every test … Read more
Make maven’s surefire show stacktrace in console
A related problem that I found is that surefire in recent versions apparently sets trimStackTrace to true by default (rendering most stack trace in failed tests useless), which is quite inconvenient. Setting -DtrimStackTrace=false or defining <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-surefire-plugin</artifactId> <configuration> <trimStackTrace>false</trimStackTrace> </configuration> </plugin> solved this.
How to mock a readonly property with mock?
I think the better way is to mock the property as PropertyMock, rather than to mock the __get__ method directly. It is stated in the documentation, search for unittest.mock.PropertyMock: A mock intended to be used as a property, or other descriptor, on a class. PropertyMock provides __get__ and __set__ methods so you can specify a … Read more
Is duplicated code more tolerable in unit tests?
Readability is more important for tests. If a test fails, you want the problem to be obvious. The developer shouldn’t have to wade through a lot of heavily factored test code to determine exactly what failed. You don’t want your test code to become so complex that you need to write unit-test-tests. However, eliminating duplication … Read more
How to output in CLI during execution of PHP Unit tests?
UPDATE Just realized another way to do this that works much better than the –verbose command line option: class TestSomething extends PHPUnit_Framework_TestCase { function testSomething() { $myDebugVar = array(1, 2, 3); fwrite(STDERR, print_r($myDebugVar, TRUE)); } } This lets you dump anything to your console at any time without all the unwanted output that comes along … Read more
How do you unit test ASP.NET Core MVC Controllers that return anonymous objects?
Original idea from this answer with a more generic approach. Using a custom DynamicObject as a wrapper for inspecting the value via reflection there was no need to add the InternalsVisibleTo public class DynamicObjectResultValue : DynamicObject, IEquatable<DynamicObjectResultValue> { private readonly object value; public DynamicObjectResultValue(object value) { this.value = value; } #region Operators public static bool … Read more
Can I “fake” a package (or at least a module) in python for testing purposes?
Sure. Define a class, put the stuff you need inside that, assign the class to sys.modules[“classname”]. class fakemodule(object): @staticmethod def method(a, b): return a+b import sys sys.modules[“package.module”] = fakemodule You could also use a separate module (call it fakemodule.py): import fakemodule, sys sys.modules[“package.module”] = fakemodule
Django: How to create a model dynamically just for testing
You can put your tests in a tests/ subdirectory of the app (rather than a tests.py file), and include a tests/models.py with the test-only models. Then provide a test-running script (example) that includes your tests/ “app” in INSTALLED_APPS. (This doesn’t work when running app tests from a real project, which won’t have the tests app … Read more
how to fix 404 warnings for images during karma unit testing
That is because you need to configurate karma to load then serve them when requested 😉 In your karma.conf.js file you should already have defined files and/or patterns like : // list of files / patterns to load in the browser files : [ {pattern: ‘app/lib/angular.js’, watched: true, included: true, served: true}, {pattern: ‘app/lib/angular-*.js’, watched: … Read more