52 lines
1.8 KiB
TypeScript
52 lines
1.8 KiB
TypeScript
import {I18nPluralPipe} from '@angular/common';
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import {PipeResolver} from '@angular/compiler/src/pipe_resolver';
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import {afterEach, beforeEach, ddescribe, describe, expect, iit, it, xit} from '@angular/core/testing/testing_internal';
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export function main() {
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describe('I18nPluralPipe', () => {
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var pipe: I18nPluralPipe;
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var mapping = {'=0': 'No messages.', '=1': 'One message.', 'other': 'There are some messages.'};
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var interpolatedMapping = {
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'=0': 'No messages.',
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'=1': 'One message.',
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'other': 'There are # messages, that is #.'
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};
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beforeEach(() => { pipe = new I18nPluralPipe(); });
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it('should be marked as pure',
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() => { expect(new PipeResolver().resolve(I18nPluralPipe).pure).toEqual(true); });
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describe('transform', () => {
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it('should return 0 text if value is 0', () => {
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var val = pipe.transform(0, mapping);
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expect(val).toEqual('No messages.');
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});
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it('should return 1 text if value is 1', () => {
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var val = pipe.transform(1, mapping);
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expect(val).toEqual('One message.');
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});
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it('should return other text if value is anything other than 0 or 1', () => {
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var val = pipe.transform(6, mapping);
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expect(val).toEqual('There are some messages.');
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});
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it('should interpolate the value into the text where indicated', () => {
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var val = pipe.transform(6, interpolatedMapping);
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expect(val).toEqual('There are 6 messages, that is 6.');
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});
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it('should use \'other\' if value is undefined', () => {
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var val = pipe.transform(void(0), interpolatedMapping);
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expect(val).toEqual('There are messages, that is .');
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});
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it('should not support bad arguments',
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() => { expect(() => pipe.transform(0, <any>'hey')).toThrowError(); });
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});
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});
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}
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