describe('Component vnCrudModel', () => {
    let $httpBackend;
    let controller;
    let $element;

    beforeEach(ngModule('vnCore'));

    beforeEach(inject(($compile, $rootScope, _$httpBackend_) => {
        $element = $compile(`<vn-crud-model></vn-crud-model>`)($rootScope);
        $httpBackend = _$httpBackend_;
        controller = $element.controller('vnCrudModel');
        controller.orgData = [
            {id: 1, value: 'My item 1'},
            {id: 2, value: 'My item 2'}
        ];
        controller.data = [
            {id: 1, value: 'My item 1'},
            {id: 2, value: 'My item 2'}
        ];
        controller._url = 'Model';
    }));

    afterEach(() => {
        $element.remove();
    });

    describe('save()', () => {
        it(`should make an HTTP post query and then update the original rows with the returned values`, () => {
            jest.spyOn(controller, 'applyChanges');

            controller.insert({value: 'My new item 1'});
            controller.insert({value: 'My new item 2'});

            $httpBackend.when('POST', 'Model/crud').respond([
                {id: 3, value: 'My new item 1'},
                {id: 4, value: 'My modified item 2'}
            ]);
            controller.save();
            $httpBackend.flush();

            const thirdRow = controller.data[2];
            const fourthRow = controller.data[3];

            expect(thirdRow.id).toEqual(3);
            expect(fourthRow.id).toEqual(4);
            expect(fourthRow.value).toEqual('My modified item 2');
            expect(controller.applyChanges).toHaveBeenCalledWith();
        });
    });

    describe('setter url()', () => {
        it('should set the url', () => {
            spyOn(controller, 'autoRefresh');
            spyOn(controller, 'clear');

            controller.url = '/TestUrl';

            expect(controller.url).toEqual('/TestUrl');
        });
    });

    describe('isLoading()', () => {
        it('should return false if canceler is null', () => {
            controller.canceler = null;

            expect(controller.isLoading).toBe(false);
        });

        it('should return true if canceler is not null', () => {
            controller.canceler = 'validValue';

            expect(controller.isLoading).toBe(true);
        });
    });

    describe('buildFilter()', () => {
        it('should build a filter and return it', () => {
            controller.order = 'id ASC';
            controller.fields = ['id'];
            controller.limit = 1;
            controller.filter = 'filterTest';

            const result = controller.buildFilter();

            expect(Object.keys(result).length).toEqual(13);
        });
    });

    describe('sendRequest()', () => {
        it('should call refresh() and check that the sendRequest is called', () => {
            spyOn(controller, 'sendRequest').and.callThrough();
            spyOn(controller, 'onRemoteDone');
            spyOn(controller, 'onRemoteError');

            const filter = {id: 1};
            const serializedParams = encodeURIComponent(JSON.stringify(filter));

            $httpBackend.whenRoute('GET', `model?filter=${serializedParams}`).respond();
            controller.sendRequest(filter, true);
            $httpBackend.flush();

            expect(controller.isPaging).toBe(false);
        });
    });

    describe('addFilter()', () => {
        it('should call addFilter and check that the new filter has been added', () => {
            spyOn(controller, 'refresh');

            const filter = {where: {id: 1}};
            controller.userFilter = {where: {name: 'test'}};
            const filterMerged = {'where': {'and': [{'name': 'test'}, {'id': 1}]}};

            controller.addFilter(filter);

            expect(controller.userFilter).toEqual(filterMerged);
            expect(controller.refresh).toHaveBeenCalledWith();
        });
    });

    describe('applyFilter()', () => {
        it('should call applyFilter and check that the refresh() is called', () => {
            spyOn(controller, 'refresh');

            const filter = {where: {id: 1}};
            const params = {where: {id: 2}};

            controller.applyFilter(filter, params);

            expect(controller.userFilter).toEqual(filter);
            expect(controller.userParams).toEqual(params);
            expect(controller.refresh).toHaveBeenCalledWith();
        });
    });

    describe('removeFilter()', () => {
        it('should check the userFilter and userParams are removed', () => {
            controller.removeFilter();

            expect(controller.userFilter).toBe(null);
            expect(controller.userParams).toBe(null);
        });
    });

    describe('loadMore()', () => {
        it('should call sendRequest with the new filter', () => {
            spyOn(controller, 'sendRequest');

            controller.moreRows = true;

            controller.loadMore(true);

            expect(controller.sendRequest).toHaveBeenCalledWith({'skip': 2}, true);
        });
    });

    describe('clear()', () => {
        it('should check that orgData and moreRows are set to null', () => {
            controller.moreRows = true;

            controller.clear();

            expect(controller.moreRows).toBe(null);
            expect(controller.orgData).toBe(null);
        });
    });

    describe('refresh()', () => {
        it('shold resolve a fake promise if this._url is undefined', () => {
            spyOn(controller.$q, 'resolve');

            controller._url = undefined;

            controller.refresh();

            expect(controller.$q.resolve).toHaveBeenCalledWith();
        });
    });

    describe('onRemoteDone()', () => {
        it('should check onRequestEnd is called, moreRows is true and currentFilter is undefined when append is true', () => {
            spyOn(controller, 'onRequestEnd');

            const append = true;
            const json = {data: [
                {
                    id: 1,
                    name: 'test'
                }]};
            const filter = {limit: 1};
            controller.onRemoteDone(json, filter, append);

            expect(controller.moreRows).toBe(true);
            expect(controller.currentFilter).toBeUndefined();
            expect(controller.onRequestEnd).toHaveBeenCalledWith();
        });

        it('should check onRequestEnd is called, moreRows is true and currentFilter is defined when append is false', () => {
            spyOn(controller, 'onRequestEnd');

            const append = false;
            const json = {data: [
                {
                    id: 1,
                    name: 'test'
                }]};
            const filter = {limit: 1};
            controller.onRemoteDone(json, filter, append);

            expect(controller.moreRows).toBe(true);
            expect(controller.currentFilter).toBe(filter);
            expect(controller.onRequestEnd).toHaveBeenCalledWith();
        });
    });

    describe('onRemoteError()', () => {
        it('should check the error', () => {
            spyOn(controller, 'onRequestEnd');

            let error;
            try {
                const newError = new Error('TestError');
                controller.onRemoteError(newError);
            } catch (e) {
                error = e.message;
            }

            expect(controller.onRequestEnd).toHaveBeenCalledWith();
            expect(error).toEqual('TestError');
        });
    });
});