Web Development with Julia and Genie by Ivo Balbaert & Adrian Salceanu

Author:Ivo Balbaert & Adrian Salceanu
Language: eng
Format: epub
Publisher: Packt
Published: 2022-12-15T00:00:00+00:00

Writing and running our first tests

There are multiple types of tests, some of the most common ones being unit tests and integration tests. Unit tests are tests that test the behavior of a single piece of code. Integration tests are tests that test the behavior of a whole application. When it comes to MVC applications, unit tests are usually focused on testing the models, while integration tests cover larger features that involve at least two layers of the MVC stack.

If you check the test/ folder, you will see that a test file has already been added, called todos_test.jl. This was created automatically by SearchLight when we created our model. The file doesn’t include any meaningful tests (that’s our job!), but we already have more than enough to get us started.

The todos_test.jl test file includes the necessary dependencies and defines a test set with a basic test:

using Test, SearchLight, Main.UserApp, Main.UserApp.Todos @testset "Todo unit tests" begin ### Your tests here @test 1 == 1 end;

Let’s make sure that everything is working as expected. We can run the tests by executing the runtests.jl file in the test folder, as follows:

julia --project runtests.jl

Our tests run successfully, as shown by the following output:

todos_test: . Test Summary: | Pass Total Time TodoMVC tests | 1 1 0.8s

But looking at our output, we can see that an exception has been thrown while loading the app’s initializers:

Loading initializers ERROR: SearchLight.Exceptions.MissingDatabaseConfigurationException("DB configuration for test not found") ...output omitted ... in expression starting at TodoMVC/config/initializers/searchlight.jl:13

We’ll address this exception next.

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