testdouble / testdouble/testdouble.js
Multiple stubbings with throwException causes unexpected behavior
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Description
When you set two stubbings that match the same invocation with the first stubbing calling throwException declaring the second stubbing trigger the exception of the first stubbing.
Example :
td.when(dep()).thenThrow(new Error())
td.when(dep()).thenReturn(true)
Executing the above code will throw an error of type Error.
I think it relates to this issue. Not sure if it can be fixed in testdouble but is there at least a workaround ?
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First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by reproducing the two-stubbing example in the issue and review the related issue #180. Trace how matching stubbings are selected when the first uses thenThrow and the second uses thenReturn. Done means the observed behavior is resolved or a verified workaround is documented.
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Assessment
- Tech stack
- javascript
- Domain
- testing
- Issue type
- Bug
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 45/100