import { describe, expect, it } from '@jest/globals';
import { toBoolean as $, False, True, fromBoolean as _, and, iif, not, or, xor } from '../src/bool';

describe('Bool', () => {
  describe('toBoolean', () => {
    it('converts True', () => {
      expect($(True)).toBe(true);
    });

    it('converts False', () => {
      expect($(False)).toBe(false);
    });
  });

  describe('fromBoolean', () => {
    it('converts true', () => {
      expect($(_(true))).toBe(true);
    });

    it('converts false', () => {
      expect($(_(false))).toBe(false);
    });
  });

  describe('iif', () => {
    it('returns true argument', () => {
      expect(iif).toDeferEvaluationOf(False, expect.skipped(True), False);
      expect($(iif._(True)._(True)._(False))).toBe(true);
    });

    it('returns false argument', () => {
      expect(iif).toDeferEvaluationOf(True, True, expect.skipped(False));
      expect($(iif._(False)._(True)._(False))).toBe(false);
    });
  });

  describe('not', () => {
    it('not False is True', () => {
      expect(not).toDeferEvaluationOf(False);
      expect($(not._(False))).toBe(true);

    });

    it('not True is False', () => {
      expect(not).toDeferEvaluationOf(True);
      expect($(not._(True))).toBe(false);
    });
  });

  describe('and', () => {
    it('False and False is False', () => {
      expect(and).toDeferEvaluationOf(False, expect.skipped(False));
      expect($(and._(False)._(False))).toBe(false);
    });

    it('False and True is False', () => {
      expect(and).toDeferEvaluationOf(False, expect.skipped(True));
      expect($(and._(False)._(True))).toBe(false);
    });

    it('True and False is False', () => {
      expect(and).toDeferEvaluationOf(True, False);
      expect($(and._(True)._(False))).toBe(false);
    });

    it('True and True is True', () => {
      expect(and).toDeferEvaluationOf(True, True);
      expect($(and._(True)._(True))).toBe(true);
    });
  });

  describe('or', () => {
    it('False or False is False', () => {
      expect(or).toDeferEvaluationOf(False, False);
      expect($(or._(False)._(False))).toBe(false);
    });

    it('False or True is True', () => {
      expect(or).toDeferEvaluationOf(False, True);
      expect($(or._(False)._(True))).toBe(true);
    });

    it('True or False is True', () => {
      expect(or).toDeferEvaluationOf(True, expect.skipped(False));
      expect($(or._(True)._(False))).toBe(true);
    });

    it('True or True is True', () => {
      expect(or).toDeferEvaluationOf(True, expect.skipped(True));
      expect($(or._(True)._(True))).toBe(true);
    });
  });

  describe('xor', () => {
    it('False xor False is False', () => {
      expect(xor).toDeferEvaluationOf(False, False);
      expect($(xor._(False)._(False))).toBe(false);
    });

    it('False xor True is True', () => {
      expect(xor).toDeferEvaluationOf(False, True);
      expect($(xor._(False)._(True))).toBe(true);
    });

    it('True xor False is True', () => {
      expect(xor).toDeferEvaluationOf(True, False);
      expect($(xor._(True)._(False))).toBe(true);
    });

    it('True xor True is False', () => {
      expect(xor).toDeferEvaluationOf(True, True);
      expect($(xor._(True)._(True))).toBe(false);
    });
  });
});