Is there something like a jasmine `toNotContain` acceptance criteria for tests?

Question

Jasmin comes with many functions for checking the expected values for validating specifications and tests.

Is there besides

getJasmineRequireObj().toContain = function() { ... };

somthing like a

getJasmineRequireObj().toNotContain = function() { ... };

?

If not, how to add an extension or plugin to deliver this feature also to our community of developers?

Solution 1

According to the documentation, you can use not:

getJasmineRequireObj().not.toContain

---

This example is from here:

describe("The 'toBe' matcher compares with ===", function() {

Matchers

Each matcher implements a boolean comparison between the actual value and the expected value. It is responsible for reporting to Jasmine if the expectation is true or false. Jasmine will then pass or fail the spec.

    it("and has a positive case", function() {
        expect(true).toBe(true);
    });

Any matcher can evaluate to a negative assertion by chaining the call to expect with a not before calling the matcher.

    it("and can have a negative case", function() {
        expect(false).not.toBe(true);
    });
});

Solution 2

Check below code which will be hwlpful, also documentation here https://jasmine.github.io/2.0/introduction.html

it("also works for finding a substring", function() {
  var a = "foo bar baz";

  expect(a).toContain("bar");
  expect(a).not.toContain("quux");
});