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Writing Karma Tests

To make sure our rendering and tools don't break upon future modifications, we have written tests for them. Rendering tests includes comparing the rendered images with the expected images. Tools tests includes comparing the output of the tools with the expected output.

Running Karma Tests Locally​

You can run yarn run test to run all tests locally. By default, karma.conf.js will run the tests in a headless chrome browser to make sure our tests can run in any servers. Therefore, you cannot visualize it by default. In order to run the tests and visually inspect the results, you can run the tests by changing the karma.conf.js file to have browsers: ['Chrome'] instead of browsers: ['ChromeHeadless'].

renderingTests

Running Only One Karma Test Locally​

You can use karma specifiers such as describe instead of (describe) and fit instead of (it) to run only one test.