2020-01-12 09:26:08 +08:00
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import {isNullOrUndefined} from '../src/util';
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2019-11-19 23:06:27 +08:00
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describe('util', () => {
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2020-01-12 09:26:08 +08:00
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describe('isNullOrUndefined', () => {
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it('should return true if the value is null', async() => {
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const value = null;
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expect(isNullOrUndefined(value)).toBeTruthy()
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2020-01-12 09:26:09 +08:00
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});
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2020-01-12 09:26:08 +08:00
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it('should return true if the value is undefined', async() => {
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const value = undefined;
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expect(isNullOrUndefined(value)).toBeTruthy()
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});
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it('should return false if the value is defined', async() => {
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const value = 'montezuma';
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expect(isNullOrUndefined(value)).toBeFalsy()
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2019-11-19 23:06:27 +08:00
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});
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})
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})
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