434575f49d
The old style of merging all of a function's variable declarations into a single statement made some sense back in the days of var, but there's no reason to keep doing it now that we use const and let.
33 lines
1017 B
JavaScript
33 lines
1017 B
JavaScript
describe('toBeNegativeInfinity', function() {
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it("fails for anything that isn't -Infinity", function() {
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const matcher = privateUnderTest.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 = privateUnderTest.matchers.toBeNegativeInfinity({
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pp: privateUnderTest.makePrettyPrinter()
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});
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const 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 = privateUnderTest.matchers.toBeNegativeInfinity();
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const 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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