import { ApproxStructure, Assertions, Step } from '@ephox/agar';
import { UnitTest } from '@ephox/bedrock-client';
import { Arr, Fun } from '@ephox/katamari';
import * as Behaviour from 'ephox/alloy/api/behaviour/Behaviour';
import { Swapping } from 'ephox/alloy/api/behaviour/Swapping';
import * as GuiFactory from 'ephox/alloy/api/component/GuiFactory';
import * as GuiSetup from 'ephox/alloy/api/testhelpers/GuiSetup';
import { Container } from 'ephox/alloy/api/ui/Container';
UnitTest.asynctest('SwappingTest', (success, failure) => {
    const ALPHA_CLS = Fun.constant('i-am-the-alpha');
    const OMEGA_CLS = Fun.constant('and-the-omega');
    GuiSetup.setup((_store, _doc, _body) => GuiFactory.build(Container.sketch({
        dom: {
            tag: 'div',
            styles: {
                background: 'steelblue',
                height: '200px',
                width: '200px'
            },
            attributes: {
                'test-uid': 'wat-uid'
            }
        },
        containerBehaviours: Behaviour.derive([
            Swapping.config({
                alpha: ALPHA_CLS(),
                omega: OMEGA_CLS()
            })
        ])
    })), (_doc, _body, _gui, component, _store) => {
        // string -> [string] -> [string] -> ()
        const assertClasses = (label, has, not) => {
            Assertions.assertStructure('Asserting structure after: ' + label, ApproxStructure.build((s, str, arr) => s.element('div', {
                classes: Arr.map(has, arr.has).concat(Arr.map(not, arr.not)),
                attrs: {
                    'test-uid': str.is('wat-uid')
                }
            })), component.element);
        };
        const testHasNoClass = (label) => Step.sync(() => {
            assertClasses(label, [], [ALPHA_CLS(), OMEGA_CLS()]);
        });
        const testHasAlpha = (label) => Step.sync(() => {
            assertClasses(label, [ALPHA_CLS()], [OMEGA_CLS()]);
        });
        const testHasOmega = (label) => Step.sync(() => {
            assertClasses(label, [OMEGA_CLS()], [ALPHA_CLS()]);
        });
        const testPredicates = (label, isAlpha, isOmega) => Step.sync(() => {
            Assertions.assertEq(label, isAlpha, Swapping.isAlpha(component));
            Assertions.assertEq(label, isOmega, Swapping.isOmega(component));
        });
        const sAlpha = Step.sync(() => {
            Swapping.toAlpha(component);
        });
        const sOmega = Step.sync(() => {
            Swapping.toOmega(component);
        });
        const sClear = Step.sync(() => {
            Swapping.clear(component);
        });
        return [
            testHasNoClass('no initial class'),
            testPredicates('isAlpha, isOmega', false, false),
            sAlpha,
            testHasAlpha('initial alpha class'),
            testPredicates('isAlpha, isOmega', true, false),
            sOmega,
            testHasOmega('swap to omega class'),
            testPredicates('isAlpha, isOmega', false, true),
            sAlpha,
            testHasAlpha('swap back to alpha class'),
            testPredicates('isAlpha, isOmega', true, false),
            sClear,
            testHasNoClass('clear classes'),
            testPredicates('isAlpha, isOmega', false, false),
            sOmega,
            testHasOmega('initial omega class'),
            testPredicates('isAlpha, isOmega', false, true),
            sAlpha,
            testHasAlpha('swap to alpha class'),
            testPredicates('isAlpha, isOmega', true, false),
            sOmega,
            testHasOmega('swap back to omega class'),
            testPredicates('isAlpha, isOmega', false, true),
            sClear,
            testHasNoClass('clear classes'),
            testPredicates('isAlpha, isOmega', false, false)
        ];
    }, success, failure);
});
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