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12 lines
509 B
12 lines
509 B
import test from 'ava';
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import m from '..';
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test('null', t => {
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const x = null;
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t.notThrows(() => m(null, m.null));
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t.notThrows(() => m(x, m.null));
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t.throws(() => m(undefined as any, m.null), 'Expected argument to be of type `null` but received type `undefined`');
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t.throws(() => m(undefined as any, 'foo', m.null), 'Expected `foo` to be of type `null` but received type `undefined`');
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t.throws(() => m('foo' as any, m.null), 'Expected argument to be of type `null` but received type `string`');
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});
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