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-rw-r--r--doc/development/testing_guide/frontend_testing.md4
1 files changed, 4 insertions, 0 deletions
diff --git a/doc/development/testing_guide/frontend_testing.md b/doc/development/testing_guide/frontend_testing.md
index 3b2b9c8c947..f8993653aec 100644
--- a/doc/development/testing_guide/frontend_testing.md
+++ b/doc/development/testing_guide/frontend_testing.md
@@ -172,6 +172,10 @@ object which can be treated like any other jasmine spy object.
Further documentation on the babel rewire pluign API can be found on
[its repository Readme doc](https://github.com/speedskater/babel-plugin-rewire#babel-plugin-rewire).
+#### Waiting in tests
+
+If you cannot avoid using [`setTimeout`](https://developer.mozilla.org/en-US/docs/Web/API/WindowOrWorkerGlobalScope/setTimeout) in tests, please use the [Jasmine mock clock](https://jasmine.github.io/api/2.9/Clock.html).
+
### Vue.js unit tests
See this [section][vue-test].