Is it possible to use Jasmine's toHaveBeenCalledWith matcher with a regular expression?

Question

I have reviewed Jasmine\'s documentation of the toHaveBeenCalledWith matcher in order to understand whether it\'s possible to pass in a regular expression for an argument, i

Answer 1

After doing some digging, I've discovered that Jasmine spy objects have a calls property, which in turn has a mostRecent() function. This function also has a child property args, which returns an array of call arguments.

Thus, one may use the following sequence to perform a regexp match on call arguments, when one wants to check that the string arguments match a specific regular expression:

var mySpy = jasmine.createSpy('foo');
mySpy("bar", "baz");
expect(mySpy.calls.mostRecent().args[0]).toMatch(/bar/);
expect(mySpy.calls.mostRecent().args[1]).toMatch(/baz/);

Pretty straightforward.