No tests found on 'ng test' with dot in the path to the root directory

[MaKCbIMKo]

Describe the bug
When I do ng test - it doesn't find any single test.

Firstly, I tried that on existing project (which is using jest but via jest cli and I know tests exist) -> 0 tests discovered.
Then, I tried new project (via ng new) -> 0 tests discovered.
At last, I downloaded simple-app example -> 0 tests discovered.

And I have no idea what I am doing wrong or haven't configured properly.

Any ideas what's the reason?

Ask for more information -> will provide information that might help.

To Reproduce
(for instance, new project)

1. ng new jest-app
2. npm i -D jest @types/jest @angular-builders/jest
3. adjust angular.json to use new builder
4. npm run test -> ng test

Expected behavior
All tests are discovered

Builder:

• @angular-builders/jest
• 8.2.0

Libraries

• angular-devkit/build-angular: from 0.802.2 to 0.803.19

Additional context

• node.js: 12.13.0

[arturovt]

I've never had this problem. Could you provide a reproduction?

[MaKCbIMKo]

What do you want me to provide?

Is 'steps to reproduce' not enough?

[arturovt]

No, not enough. I ran through them and don't see such errors.

[arturovt]

Issues without reproductions should be closed as well as on the StackOverflow:

When asking a question, people will be better able to provide help if you provide code that they can easily understand and use to reproduce the problem. This is referred to by community members as creating a minimal, reproducible example (reprex), a minimal, complete and verifiable example (mcve), or a minimal, workable example (mwe).

What's the problem to make a working example thus everyone who has a look at this issue is able to reproduce it, debug and prolly provide a fix?

[MaKCbIMKo]

I just re-checked with simple-app example:

• download example
• install packages
• run tests

I did change nothing, and if I will create another repro-repo - it will be the same as example.

No, not enough. I ran through them and don't see such errors.

That's why I guess it might be related to environment (different nodejs versions etc)...

[MaKCbIMKo]

I've investigated the issue I have.

And I found the problem: root path to project contains dot character, e.g. D:\my\path\.with\dot\.

Further investigation showed some interesting things:
In all cases I have rootDir path WITH dot (in jest config)

1. if I use full path (with dot) in testMatch config section -> no tests found
2. if I use <rootDir> variable in testMatch config section -> no tests found
3. if I use default testMatch without specifying full path (e.g. just "**/+(*.)+(spec|test).+(ts|js)?(x)") -> all tests found

As I workaround for that I have specified testMatch without full path:

{
    ........
    testMatch: ["**/+(*.)+(spec|test).+(ts|js)?(x)"],
    ........
}

It overrides generated testMatch path provided by jest builder and as a results it finds all tests.

It's weird because the rootDir still contains folder starts with dot, but it works.

Seems like it's not a problem with jest builder but the problem with jest itself. I will close this issue.

Hovewer, @just-jeb - Do you think I need to open another issue/suggestion to handle such case by jest builder (e.g. do not use full paths in testMatch generation)?

I've created issue in jest repo but I have no idea how fast they will proceed that...

At least for now I have a workaround without changing project path or renaming folders

[just-jeb]

Hi @MaKCbIMKo thanks for the effort.
I'll reopen it until we confirm it's not an issue with the builder (it might be the builder, because it effectively generates the matches per project so probably it doesn't work well with dots).
Might be also issue with Angular core, since we use their utilities to resolve the paths.

[MaKCbIMKo]

Hi @just-jeb - Ok, so I will wait for updates from you - I'm curios what you will find.

[mcaden]

Tests ran fine locally but I encountered this exact issue in Azure Devops CI. I can also confirm the workaround.