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import { GlLoadingIcon } from '@gitlab/ui';
import { shallowMountExtended } from 'helpers/vue_test_utils_helper';
import TracingList from '~/tracing/components/tracing_list.vue';
import TracingEmptyState from '~/tracing/components/tracing_empty_state.vue';
import TracingTableList from '~/tracing/components/tracing_table_list.vue';
import waitForPromises from 'helpers/wait_for_promises';
import { createAlert } from '~/alert';
jest.mock('~/alert');
describe('TracingList', () => {
let wrapper;
let observabilityClientMock;
const findLoadingIcon = () => wrapper.findComponent(GlLoadingIcon);
const findEmptyState = () => wrapper.findComponent(TracingEmptyState);
const findTableList = () => wrapper.findComponent(TracingTableList);
const mountComponent = async () => {
wrapper = shallowMountExtended(TracingList, {
propsData: {
observabilityClient: observabilityClientMock,
stubs: {
GlLoadingIcon: true,
TracingEmptyState: true,
TracingTableList: true,
},
},
});
await waitForPromises();
};
beforeEach(() => {
observabilityClientMock = {
isTracingEnabled: jest.fn(),
enableTraces: jest.fn(),
fetchTraces: jest.fn(),
};
});
it('renders the loading indicator while checking if tracing is enabled', () => {
mountComponent();
expect(findLoadingIcon().exists()).toBe(true);
expect(observabilityClientMock.isTracingEnabled).toHaveBeenCalled();
});
describe('when tracing is enabled', () => {
const mockTraces = ['trace1', 'trace2'];
beforeEach(async () => {
observabilityClientMock.isTracingEnabled.mockResolvedValueOnce(true);
observabilityClientMock.fetchTraces.mockResolvedValueOnce(mockTraces);
await mountComponent();
});
it('fetches the traces and renders the trace list', () => {
expect(observabilityClientMock.isTracingEnabled).toHaveBeenCalled();
expect(observabilityClientMock.fetchTraces).toHaveBeenCalled();
expect(findLoadingIcon().exists()).toBe(false);
expect(findEmptyState().exists()).toBe(false);
expect(findTableList().exists()).toBe(true);
expect(findTableList().props('traces')).toBe(mockTraces);
});
it('calls fetchTraces method when TracingTableList emits reload event', () => {
observabilityClientMock.fetchTraces.mockClear();
observabilityClientMock.fetchTraces.mockResolvedValueOnce(['trace1']);
findTableList().vm.$emit('reload');
expect(observabilityClientMock.fetchTraces).toHaveBeenCalledTimes(1);
});
});
describe('when tracing is not enabled', () => {
beforeEach(async () => {
observabilityClientMock.isTracingEnabled.mockResolvedValueOnce(false);
observabilityClientMock.fetchTraces.mockResolvedValueOnce([]);
await mountComponent();
});
it('renders TracingEmptyState', () => {
expect(findEmptyState().exists()).toBe(true);
});
it('set enableTracing as TracingEmptyState enable-tracing callback', () => {
findEmptyState().props('enableTracing')();
expect(observabilityClientMock.enableTraces).toHaveBeenCalled();
});
});
describe('error handling', () => {
it('if isTracingEnabled fails, it renders an alert and empty page', async () => {
observabilityClientMock.isTracingEnabled.mockRejectedValueOnce('error');
await mountComponent();
expect(createAlert).toHaveBeenCalledWith({ message: 'Failed to load page.' });
expect(findLoadingIcon().exists()).toBe(false);
expect(findEmptyState().exists()).toBe(false);
expect(findTableList().exists()).toBe(false);
});
it('if fetchTraces fails, it renders an alert and empty list', async () => {
observabilityClientMock.fetchTraces.mockRejectedValueOnce('error');
observabilityClientMock.isTracingEnabled.mockReturnValueOnce(true);
await mountComponent();
expect(createAlert).toHaveBeenCalledWith({ message: 'Failed to load traces.' });
expect(findTableList().exists()).toBe(true);
expect(findTableList().props('traces')).toEqual([]);
});
it('if enableTraces fails, it renders an alert and empty-state', async () => {
observabilityClientMock.isTracingEnabled.mockReturnValueOnce(false);
observabilityClientMock.enableTraces.mockRejectedValueOnce('error');
await mountComponent();
findEmptyState().props('enableTracing')();
await waitForPromises();
expect(createAlert).toHaveBeenCalledWith({ message: 'Failed to enable tracing.' });
expect(findLoadingIcon().exists()).toBe(false);
expect(findEmptyState().exists()).toBe(true);
expect(findTableList().exists()).toBe(false);
});
});
});
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