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| author | Winnie Hellmann <winnie@gitlab.com> | 2019-06-25 15:37:41 +0000 |
|---|---|---|
| committer | Marcia Ramos <marcia@gitlab.com> | 2019-06-25 15:37:41 +0000 |
| commit | 1eccad79c1850fd047884406e0906c928533dc42 (patch) | |
| tree | 1fa1409446b1efa22fc05ad45be6ad00760fe6b8 | |
| parent | 59a53e13969d6cbe9f5e187c450a3a7c20521e98 (diff) | |
| download | gitlab-ce-1eccad79c1850fd047884406e0906c928533dc42.tar.gz | |
Clarify that this.something is not available in Jest (docs)
| -rw-r--r-- | doc/development/testing_guide/frontend_testing.md | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/doc/development/testing_guide/frontend_testing.md b/doc/development/testing_guide/frontend_testing.md index 3949f61d4d4..fc9b175bc8a 100644 --- a/doc/development/testing_guide/frontend_testing.md +++ b/doc/development/testing_guide/frontend_testing.md @@ -32,6 +32,9 @@ we need to solve before being able to use Jest for all our needs. The aliases used by Jest are defined in its [own config](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/jest.config.js). - All calls to `setTimeout` and `setInterval` are mocked away. See also [Jest Timer Mocks](https://jestjs.io/docs/en/timer-mocks). - `rewire` is not required because Jest supports mocking modules. See also [Manual Mocks](https://jestjs.io/docs/en/manual-mocks). +- No [context object](https://jasmine.github.io/tutorials/your_first_suite#section-The_%3Ccode%3Ethis%3C/code%3E_keyword) is passed to tests in Jest. + This means sharing `this.something` between `beforeEach()` and `it()` for example does not work. + Instead you should declare shared variables in the context that they are needed (via `const` / `let`). - The following will cause tests to fail in Jest: - Unmocked requests. - Unhandled Promise rejections. |