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30 lines
627 B
30 lines
627 B
import {Predicate, Context} from './predicate';
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export class BooleanPredicate extends Predicate<boolean> {
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/**
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* @hidden
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*/
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constructor(context?: Context<boolean>) {
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super('boolean', context);
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}
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/**
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* Test a boolean to be true.
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*/
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get true() {
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return this.addValidator({
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message: (value, label) => `Expected ${label} to be true, got ${value}`,
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validator: value => value === true
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});
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}
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/**
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* Test a boolean to be false.
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*/
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get false() {
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return this.addValidator({
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message: (value, label) => `Expected ${label} to be false, got ${value}`,
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validator: value => value === false
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});
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}
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}
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