import { LegacyUnit } from '@ephox/mcagar';
import { Pipeline } from '@ephox/agar';
import Fun from 'tinymce/core/util/Fun';
import { UnitTest } from '@ephox/bedrock';

UnitTest.asynctest('browser.tinymce.core.util.FunTest', function () {
  const success = arguments[arguments.length - 2];
  const failure = arguments[arguments.length - 1];
  const suite = LegacyUnit.createSuite();

  const isTrue = function (value) {
    return value === true;
  };

  const isFalse = function (value) {
    return value === true;
  };

  const isAbove = function (target, value) {
    return value() > target();
  };

  suite.test('constant', function () {
    LegacyUnit.strictEqual(Fun.constant(1)(), 1);
    LegacyUnit.strictEqual(Fun.constant('1')(), '1');
    LegacyUnit.strictEqual(Fun.constant(null)(), null);
  });

  suite.test('negate', function () {
    LegacyUnit.strictEqual(Fun.negate(isTrue)(false), true);
    LegacyUnit.strictEqual(Fun.negate(isFalse)(true), false);
  });

  suite.test('and', function () {
    const isAbove5 = Fun.curry(isAbove, Fun.constant(5));
    const isAbove10 = Fun.curry(isAbove, Fun.constant(10));

    LegacyUnit.strictEqual(Fun.and(isAbove10, isAbove5)(Fun.constant(10)), false);
    LegacyUnit.strictEqual(Fun.and(isAbove10, isAbove5)(Fun.constant(30)), true);
  });

  suite.test('or', function () {
    const isAbove5 = Fun.curry(isAbove, Fun.constant(5));
    const isAbove10 = Fun.curry(isAbove, Fun.constant(10));

    LegacyUnit.strictEqual(Fun.or(isAbove10, isAbove5)(Fun.constant(5)), false);
    LegacyUnit.strictEqual(Fun.or(isAbove10, isAbove5)(Fun.constant(15)), true);
    LegacyUnit.strictEqual(Fun.or(isAbove5, isAbove10)(Fun.constant(15)), true);
  });

  suite.test('compose', function () {
    LegacyUnit.strictEqual(Fun.compose(Fun.curry(isAbove, Fun.constant(5)), Fun.constant)(10), true);
  });

  Pipeline.async({}, suite.toSteps({}), function () {
    success();
  }, failure);
});