Files
jasmine/spec/core/matchers/toBeNegativeInfinitySpec.js
2020-09-29 18:05:38 -07:00

33 lines
1005 B
JavaScript

describe('toBeNegativeInfinity', function() {
it("fails for anything that isn't -Infinity", function() {
var matcher = jasmineUnderTest.matchers.toBeNegativeInfinity(),
result;
result = matcher.compare(1);
expect(result.pass).toBe(false);
result = matcher.compare(Number.NaN);
expect(result.pass).toBe(false);
result = matcher.compare(null);
expect(result.pass).toBe(false);
});
it('has a custom message on failure', function() {
var matcher = jasmineUnderTest.matchers.toBeNegativeInfinity({
pp: jasmineUnderTest.makePrettyPrinter()
}),
result = matcher.compare(0);
expect(result.message()).toEqual('Expected 0 to be -Infinity.');
});
it('succeeds for -Infinity', function() {
var matcher = jasmineUnderTest.matchers.toBeNegativeInfinity(),
result = matcher.compare(Number.NEGATIVE_INFINITY);
expect(result.pass).toBe(true);
expect(result.message).toEqual('Expected actual not to be -Infinity.');
});
});