38 lines
1.1 KiB
JavaScript
38 lines
1.1 KiB
JavaScript
describe('toBeNaN', function() {
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it('passes for NaN with a custom .not fail', function() {
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const matcher = jasmineUnderTest.matchers.toBeNaN();
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const result = matcher.compare(Number.NaN);
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expect(result.pass).toBe(true);
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expect(result.message).toEqual('Expected actual not to be NaN.');
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});
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it('fails for anything not a NaN', function() {
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const matcher = jasmineUnderTest.matchers.toBeNaN();
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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(null);
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expect(result.pass).toBe(false);
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result = matcher.compare(void 0);
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expect(result.pass).toBe(false);
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result = matcher.compare('');
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expect(result.pass).toBe(false);
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result = matcher.compare(Number.POSITIVE_INFINITY);
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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.toBeNaN({
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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 NaN.');
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});
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});
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