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14 lines
560 B
14 lines
560 B
7 years ago
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import test from 'ava';
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import m from '..';
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test('undefined', t => {
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let x; // tslint:disable-line:prefer-const
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const y = 12;
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t.notThrows(() => m(undefined, m.undefined));
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t.notThrows(() => m(x, m.undefined));
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t.throws(() => m(y, m.undefined), 'Expected argument to be of type `undefined` but received type `number`');
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t.throws(() => m(null, m.undefined), 'Expected argument to be of type `undefined` but received type `null`');
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t.throws(() => m('foo', m.undefined), 'Expected argument to be of type `undefined` but received type `string`');
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});
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