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28 lines
655 B
28 lines
655 B
import test from 'ava';
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import ow from '..';
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test('null', t => {
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// tslint:disable-next-line no-null-keyword
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const x = null;
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t.notThrows(() => {
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// tslint:disable-next-line no-null-keyword
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ow(null, ow.null);
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});
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t.notThrows(() => {
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ow(x, ow.null);
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});
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t.throws(() => {
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ow(undefined as any, ow.null);
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}, 'Expected argument to be of type `null` but received type `undefined`');
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t.throws(() => {
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ow(undefined as any, 'foo', ow.null);
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}, 'Expected `foo` to be of type `null` but received type `undefined`');
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t.throws(() => {
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ow('foo' as any, ow.null);
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}, 'Expected argument to be of type `null` but received type `string`');
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});
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