@push.rocks/smartexpect/ts/namespaces/boolean.ts

A testing library to manage expectations in code, offering both synchronous and asynchronous assertion methods.

import { Assertion } from '../smartexpect.classes.assertion.js';
import type { TExecutionType } from '../types.js';

/**
 * Namespace for boolean-specific matchers
 */
export class BooleanMatchers<M extends TExecutionType> {
  constructor(private assertion: Assertion<boolean, M>) {}

  toBeTrue() {
    return this.assertion.customAssertion(
      (v) => v === true,
      `Expected value to be true`
    );
  }

  toBeFalse() {
    return this.assertion.customAssertion(
      (v) => v === false,
      `Expected value to be false`
    );
  }

  toBeTruthy() {
    return this.assertion.customAssertion(
      (v) => Boolean(v),
      `Expected value to be truthy`
    );
  }

  toBeFalsy() {
    return this.assertion.customAssertion(
      (v) => !v,
      `Expected value to be falsy`
    );
  }
}