import experimentMixin from '@/mixins/experiment-mixin';
import { shallowMount } from '@vue/test-utils';
import { getMountOptions } from '@/helpers/unit-test-helper.js';
import { useMainStore } from '@/store';

/** @ignore */
function setupMocks({ experimentSettings }) {
    const store = useMainStore();
    const mocks = getMountOptions({});

    const testExperimentSettings = {
        Setting1: 'Value1',
        Setting2: 'Value2',
        Setting3: 'Value3',
        Setting4: 'Value1',
        Setting5: 'Value2',
        Setting6: 'Value3'
    };

    const mockExperimentData = [
        {
            settings: experimentSettings ?? testExperimentSettings,
            isActive: true,
            variationName: 'test',
            universeName: 'testUniverse'
        }
    ];

    store.applicationUser.experiments = mockExperimentData;

    const mockComponent = {
        template: '<div></div>',
        mixins: [experimentMixin]
    };

    const wrapper = shallowMount(mockComponent, mocks);

    return { wrapper };
}

describe('experiment-mixin', () => {
    describe('hasSettingEqualTo', () => {
        test('setting exists and value matches => return true', () => {
            // Arrange
            const { wrapper } = setupMocks({});

            // Act
            const result = wrapper.vm.hasSettingEqualTo('Setting2', 'Value2');

            // Assert
            expect(result).toEqual(true);
        });

        test('setting exists and value does not match => return false', () => {
            // Arrange
            const { wrapper } = setupMocks({});

            // Act
            const result = wrapper.vm.hasSettingEqualTo('Setting2', 'Value3');

            // Assert
            expect(result).toEqual(false);
        });

        test('setting does not exist => return false', () => {
            // Arrange
            const { wrapper } = setupMocks({});

            // Act
            const result = wrapper.vm.hasSettingEqualTo('SettingBoogly', 'Woogly');

            // Assert
            expect(result).toEqual(false);
        });

        test('there are no settings => return false', () => {
            // Arrange
            const { wrapper } = setupMocks({ experimentSettings: {} });

            // Act
            const result = wrapper.vm.hasSettingEqualTo('Setting2', 'Value3');

            // Assert
            expect(result).toEqual(false);
        });
    });

    describe('hasSetting', () => {
        test('has setting => return true', () => {
            // Arrange
            const { wrapper } = setupMocks({});

            // Act
            const result = wrapper.vm.hasSetting('Setting4');

            // Assert
            expect(result).toEqual(true);
        });

        test('does not have setting => return false', () => {
            // Arrange
            const { wrapper } = setupMocks({});

            // Act
            const result = wrapper.vm.hasSetting('BooglyWoogly');

            // Assert
            expect(result).toEqual(false);
        });

        test('experimentSettings is empty => return false', () => {
            // Arrange
            const { wrapper } = setupMocks({ experimentSettings: {} });

            // Act
            const result = wrapper.vm.hasSetting('Setting4');

            // Assert
            expect(result).toEqual(false);
        });
    });

    describe('getSettingValue', () => {
        test('has setting => return correct value', () => {
            // Arrange
            const { wrapper } = setupMocks({});

            // Act
            const result = wrapper.vm.getSettingValue('Setting3');

            // Assert
            expect(result).toEqual('Value3');
        });

        test('does not have setting => return null', () => {
            // Arrange
            const { wrapper } = setupMocks({});

            // Act
            const result = wrapper.vm.getSettingValue('Hello');

            // Assert
            expect(result).toBeNull();
        });

        test('experimentSettings is empty => return null', () => {
            // Arrange
            const { wrapper } = setupMocks({ experimentSettings: {} });

            // Act
            const result = wrapper.vm.getSettingValue('Hello');

            // Assert
            expect(result).toBeNull();
        });
    });
});