jest-preset.json testMatch Question

[voitanos]

jest-preset.json testMatch Question

[andrewconnell]

What are the actual suites (files) named? Can you share an example of your full path?

This should work for the following:

• /tests/something.spec.tsx
• /tests/folder/something.spec.tsx
• either of the above with "test" instead of "spec" in the name
• either of the above for JSX files
• either of the above with additional nested folders

[juliemturner]

yes, so an actual example file is:
/tests/common/services/UpgradeServices.spec.ts

The provided jest-preset.json file specifies the following
"testMatch": [ "**/src/**/*.(spec|test).+(ts|js)?(x)", "**/__tests__/**/*.(spec|test).+(ts|js)?(x)" ],
That setup will not find my above file on windows. However, if I adjust it to the following it works fine:
"testMatch": [ "**/src/**/*.(spec|test).+(ts|js)?(x)", "**/tests/**/*.(spec|test).+(ts|js)?(x)", "**/__tests__/**/*.(spec|test).+(ts|js)?(x)" ],
I was basically trying to verify that my assumption that __tests__ was indeed a pattern that should match the root folder tests as a sibling of src. What I'm wondering is if this is a limitation of mac vs windows.

[andrewconnell]

It's not finding it because your folder is named tests, not __tests__

[juliemturner]

Actually, I tried that first, thinking it was literal and not a pattern and that doesn't work. I just retested it again to make sure, also copied the value __tests__ to make sure there is no encoding problem as I've had that bite me with PowerShell.

To to be clear this path also doesn't work:
__tests__/common/services/UpgradeServices.spec.ts

[juliemturner]

My current workaround, that's good for anyone else to know in case they have a requirement that their tests be in some folder way outside the patterns you support, is to add an entry into the jest.config.json file in the config folder... so this:

{
"preset": "@voitanos/jest-preset-spfx-react16",
"rootDir": "../tests",
"testMatch": [
"**/tests/**/*.(spec|test).+(ts|js)?(x)"
]
}

[andrewconnell]

_ isn't a special character in regex... just a string.

Most developers when writing tests put them either beside the code they test (ie: src) or in a __tests__ folder as that pattern matches the folders generated by snapshots when doing React component rendering tests.

If you want to have your tests in a folder separate from your source, just override the testMatch property defined in the preset. If you wanted it to be either "src" or "tests", set the contents of jest.config.json to:

{
  "preset": "@voitanos/jest-preset-spfx-react16",
  "rootDir": "../tests",
  "testMatch": [
    "**/(src|tests)/**/*.(spec|test).+(ts|js)?(x)"
  ]
}

[juliemturner]

Yep, well... for whatever reason I can't use the folder __tests__ so... it's what it is... and I had applied the workaround... thanks for the confirmation.