Get the current test/spec name in Jest

Question

Is there a way to get the current spec name from within the running test?

Basically I want to save a file, eg. using a function saveFile(), with the nam

Answer 1

This worked for me

console.log(expect.getState().currentTestName);

Answer 2

I found that the only possible way was through the use of expect(), which contains the spec name in its this. doing something like

expect.extend({
  async toSaveFile(data) {
    fs.writeFileSync(`${this.currentTestName}.txt`, data)
    return { pass: true };
  },
});

allows to then do

expect().toSaveFile('contents of the file');

it's definitely a hack, but it's the only way I could find to get a reference to the spec name. there is also this.testPath that indicates the test file

Answer 3

Not sure how @Giacomo concluded that was "the only possible" way :) since there's this alternative mentioned in this GitHub issue, which makes the test name accessible directly in the test via jasmine['currentTest'].fullName, no extend needed.

jest.config.js:

module.exports = {
    setupFilesAfterEnv: ['./jest.setup.js'],
    
    .................
};

jest.setup.js:

// Patch tests to include their own name
jasmine.getEnv().addReporter({
    specStarted: result => jasmine.currentTest = result,
    specDone: result => jasmine.currentTest = result,
});

Then, in your *.test.js files...

describe('Test description', () => {
    beforeEach(() => console.log('Before test', jasmine['currentTest'].fullName));

    test(...);
});