Add high-level tests #92
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| [InputKeys.ReleaseVersion]: string; | ||
| } | ||
| } | ||
| interface ActionEnv extends NodeJS.ProcessEnv { |
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This was changed because we access process.env in some of the setup code the new tests and these ambient types were confusing TypeScript. We don't need to modify the global ProcessEnv type; we just need to get TypeScript to see process.env in a certain light when we are accessing it in this file.
| @@ -21,5 +21,5 @@ module.exports = { | |||
| restoreMocks: true, | |||
| testEnvironment: 'node', | |||
| testRegex: ['\\.test\\.(ts|js)$'], | |||
| testTimeout: 2500, | |||
| testTimeout: 5000, | |||
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I've raised the timeout globally because many of the high level tests may take more than 2.5s to run (due to the fact that we are shelling out and because the main script itself takes about a half a second to run).
| @@ -0,0 +1,128 @@ | |||
| import path from 'path'; | |||
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I've tried to leave comments describing what each thing does, but here is a high level:
- To set up a test, we need to create two repos. We will use one repo to run the action script, but we also need another repo that the first one can talk to so that the action script can run
git fetch --tags. - The collection of these repos is called an environment and are kept in a directory within a temporary location. The environment is cleared and recreated before each test.
- There are two types of Environment classes, one which is specialized to initialize a polyrepo and one to initialize a monorepo. These have different characteristics, so there are two kinds of Repo classes as well.
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This commit adds tests which exercise the behavior of the script that powers the majority of this action. It does this by using real Git repos and testing the contents of real files instead of mocking out commands and access to the filesystem. The tests in this commit should cover all of the happy paths provided directly by this action, as well as some behavior offered by `@metamask/auto-changelog` is also covered, because it seemed to make sense when thinking about how this action "should" work from a high level.
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Done! |
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This commit adds tests which exercise the behavior of the script that powers the majority of this action. It does this by using real Git repos and testing the contents of real files instead of mocking out commands and access to the filesystem.
The tests in this commit should cover all of the happy paths provided directly by this action, as well as some behavior offered by
@metamask/auto-changelogis also covered, because it seemed to make sense when thinking about how this action "should" work from a high level.The new file that this introduces,
high-level.test.ts, has a lot of tests in it, and so it can be quite intimidating to review. That said, a lot of the tests repeat themselves. I would recommend runningyarn testand looking at thedescribes andits to get an idea of the structure. For more help, however, here are some of the high points: