Unable to debug test case using Jest in chrome under node devTools

问题

I just started using Jest. For debugging under testcase file;

  describe("Filter function", () => {
  test("it should filter by a search", () => {
    const input = [
      { id: 1, url: "https://www.google.com" },
      { id: 2, url: "https://www.yahoo.com" },
      { id: 3, url: "https://www.gmail.com" }
    ];

    const output = [{ id: 3, url: "https://www.gmail.com" }];
    debugger;
    expect(filterByTerm(input, "gmail")).toEqual(output);
    debugger;
    expect(filterByTerm(input, "GMAIL")).toEqual(output);
  });

 
});

under Project directory - run this command

node --inspect-brk ./node_modules/jest/bin/jest.js --runInBand

After running this command says node --inspect-brk node_modules/jest/bin/jest.js --runInBand Debugger listening on ws://127.0.0.1:9229/ab651461-dfe8-4528-8a07-484a4be5db7b For help, see: https://nodejs.org/en/docs/inspector

after this opened chrome://inspect under it clicked on open dedicated devtools for Node here, It opened window where I added src folder for same and opened test file but debugging didnt came. Help please on same issue

However, in the resulting dev tools window, I can't see anything to debug. I am expecting a process where I can set breakpoints and inspect data.

回答1:

Run this command;

node --inspect-brk ./node_modules/jest/bin/jest.js --runInBand
Debugger listening on ws://127.0.0.1:9229/6a0bb29e-eca2-4a25-b894-a5e803339ec9
For help, see: https://nodejs.org/en/docs/inspector

After this enter this url in chrome;

devtools://devtools/bundled/inspector.html?experiments=true&v8only=true&ws=127.0.0.1:9229/6a0bb29e-eca2-4a25-b894-a5e803339ec9

and Resume the button on right hand side again Press again F8 wait for some time, Debugging started Like charm..! on your test file where debugger; is written

Thank you again !

来源：https://stackoverflow.com/questions/63671251/unable-to-debug-test-case-using-jest-in-chrome-under-node-devtools