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ReferenceError: spyOn is not defined after migration to 12.4.0
See original GitHub issueCurrent Behavior
After migration from 12.3.6 to 12.4.0 (jest is bumped to 27) I get ReferenceError: spyOn is not defined on every spyOn occurence in my tests
Expected Behavior
After migration I would expect that test would work as before (compile & execute successfully).
Steps to Reproduce
Migrate from 12.3.6 to 12.4.0
Failure Logs
ReferenceError: spyOn is not defined
38 |
39 | const item = mockItems[1];
> 40 | spyOn(instance.selected, 'emit');
Environment
It is happening when running test e.g. nx affected:test
Issue Analytics
- State:
- Created 2 years ago
- Reactions:1
- Comments:8 (1 by maintainers)
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Since I’m using Jasmine tests under Jest, I solved this by adding the following to
jest.config.js:See: https://jestjs.io/blog/2021/05/25/jest-27#flipping-defaults
This method and many other jasmine methods were removed in jest 27. You should replace usage of spyOn with jest.spyOn (https://jestjs.io/docs/jest-object#jestspyonobject-methodname)