I am using Jest to test for a function, which generate a english word.

I tried below but not working. Just want to check if the word is combined by english characters

  it("generate a english word", () => {
    const word = "APPLE";
    expect(word).toMatch('/^[A-Za-z]*$/');
  });

What's wrong with it?

CodePudding user response：

This test

expect(word).toMatch('/^[A-Za-z]*$/');

tries to match the string '/^[A-Za-z]*$/'. You want to pass it as a regular expression instead

expect(word).toMatch(/^[A-Za-z]*$/);

The lack of quotation marks in the second case makes all the difference.

Here is the link to the documentation https://jestjs.io/docs/expect#tomatchregexp--string