33 lines
1013 B
JavaScript
33 lines
1013 B
JavaScript
describe('toBeNegativeInfinity', function() {
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it("fails for anything that isn't -Infinity", function() {
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const matcher = jasmineUnderTest.matchers.toBeNegativeInfinity();
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let result;
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result = matcher.compare(1);
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expect(result.pass).toBe(false);
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result = matcher.compare(Number.NaN);
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expect(result.pass).toBe(false);
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result = matcher.compare(null);
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expect(result.pass).toBe(false);
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});
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it('has a custom message on failure', function() {
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const matcher = jasmineUnderTest.matchers.toBeNegativeInfinity({
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pp: jasmineUnderTest.makePrettyPrinter()
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}),
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result = matcher.compare(0);
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expect(result.message()).toEqual('Expected 0 to be -Infinity.');
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});
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it('succeeds for -Infinity', function() {
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const matcher = jasmineUnderTest.matchers.toBeNegativeInfinity(),
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result = matcher.compare(Number.NEGATIVE_INFINITY);
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expect(result.pass).toBe(true);
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expect(result.message).toEqual('Expected actual not to be -Infinity.');
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});
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});
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