/**
 * Licensed Materials - Property of IBM
 * IBM Cognos Products: BI
 * (C) Copyright IBM Corp. 2019
 * US Government Users Restricted Rights - Use, duplication or disclosure restricted by GSA ADP Schedule Contract with IBM Corp.
 */

import ShowNavBarItemLabelsAction from "cawebpack/actions/ShowNavBarItemLabelsAction";

const addDOMClass = jest.fn(() => {});
const removeDOMClass = jest.fn(() => {});

const createAppViewDOM = (navBarLength: number): object => {
    return {
        getElementsByClassName: jest.fn(() => {
            return {
                length: navBarLength,
                0: {
                    classList: {
                        add: addDOMClass,
                        remove: removeDOMClass
                    }
                }
            };
        })
    };
};

const createMockContext = (appViewDOM: object): any => {
    return {
        glassContext: {
            appController: {
                currentAppView: {
                    $el: [appViewDOM]
                }
            }
        }
    };
};

describe("Hide Navbar Labels Action", () => {
    let actionHandler: ShowNavBarItemLabelsAction;

    beforeEach(() => {
        actionHandler = new ShowNavBarItemLabelsAction();

        const spyFunc = jest.fn(() => createAppViewDOM(1));
        Object.defineProperty(document, "querySelector", {
            value: spyFunc,
            configurable: true
        });
    });

    afterEach(() => {
        jest.clearAllMocks();
    });

    it("canExecute returns true if navBar exists", () => {
        const appViewDOM = createAppViewDOM(1);
        const mockContext = createMockContext(appViewDOM);

        const result = actionHandler.canExecute(mockContext);
        expect(result).toBe(true);
    });

    it("canExecute returns false if no navBar", () => {
        const spyFunc = jest.fn(() => createAppViewDOM(0));
        Object.defineProperty(document, "querySelector", {
            value: spyFunc,
            configurable: true
        });

        const appViewDOM = createAppViewDOM(0);
        const mockContext = createMockContext(appViewDOM);

        const result = actionHandler.canExecute(mockContext);
        expect(result).toBe(false);
    });

    it("it can remove narrow from navbar classList in doAction", () => {
        actionHandler.doAction();

        expect(removeDOMClass).toHaveBeenCalledWith("narrow");
    });
});