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import prometheusIntegration from 'test_fixtures/integrations/prometheus/prometheus_integration.html';
import MockAdapter from 'axios-mock-adapter';
import { setHTMLFixture, resetHTMLFixture } from 'helpers/fixtures';
import waitForPromises from 'helpers/wait_for_promises';
import axios from '~/lib/utils/axios_utils';
import { HTTP_STATUS_OK } from '~/lib/utils/http_status';
import PANEL_STATE from '~/prometheus_metrics/constants';
import PrometheusMetrics from '~/prometheus_metrics/prometheus_metrics';
import { metrics2 as metrics, missingVarMetrics } from './mock_data';
describe('PrometheusMetrics', () => {
beforeEach(() => {
setHTMLFixture(prometheusIntegration);
});
describe('constructor', () => {
let prometheusMetrics;
beforeEach(() => {
prometheusMetrics = new PrometheusMetrics('.js-prometheus-metrics-monitoring');
});
afterEach(() => {
resetHTMLFixture();
});
it('should initialize wrapper element refs on class object', () => {
expect(prometheusMetrics.$wrapper).toBeDefined();
expect(prometheusMetrics.$monitoredMetricsPanel).toBeDefined();
expect(prometheusMetrics.$monitoredMetricsCount).toBeDefined();
expect(prometheusMetrics.$monitoredMetricsLoading).toBeDefined();
expect(prometheusMetrics.$monitoredMetricsEmpty).toBeDefined();
expect(prometheusMetrics.$monitoredMetricsList).toBeDefined();
expect(prometheusMetrics.$missingEnvVarPanel).toBeDefined();
expect(prometheusMetrics.$panelToggleRight).toBeDefined();
expect(prometheusMetrics.$panelToggleDown).toBeDefined();
expect(prometheusMetrics.$missingEnvVarMetricCount).toBeDefined();
expect(prometheusMetrics.$missingEnvVarMetricsList).toBeDefined();
});
it('should initialize metadata on class object', () => {
expect(prometheusMetrics.backOffRequestCounter).toEqual(0);
expect(prometheusMetrics.activeMetricsEndpoint).toContain('/test');
});
});
describe('showMonitoringMetricsPanelState', () => {
let prometheusMetrics;
beforeEach(() => {
prometheusMetrics = new PrometheusMetrics('.js-prometheus-metrics-monitoring');
});
it('should show loading state when called with `loading`', () => {
prometheusMetrics.showMonitoringMetricsPanelState(PANEL_STATE.LOADING);
expect(prometheusMetrics.$monitoredMetricsLoading.hasClass('hidden')).toBe(false);
expect(prometheusMetrics.$monitoredMetricsEmpty.hasClass('hidden')).toBe(true);
expect(prometheusMetrics.$monitoredMetricsList.hasClass('hidden')).toBe(true);
});
it('should show metrics list when called with `list`', () => {
prometheusMetrics.showMonitoringMetricsPanelState(PANEL_STATE.LIST);
expect(prometheusMetrics.$monitoredMetricsLoading.hasClass('hidden')).toBe(true);
expect(prometheusMetrics.$monitoredMetricsEmpty.hasClass('hidden')).toBe(true);
expect(prometheusMetrics.$monitoredMetricsList.hasClass('hidden')).toBe(false);
});
it('should show empty state when called with `empty`', () => {
prometheusMetrics.showMonitoringMetricsPanelState(PANEL_STATE.EMPTY);
expect(prometheusMetrics.$monitoredMetricsLoading.hasClass('hidden')).toBe(true);
expect(prometheusMetrics.$monitoredMetricsEmpty.hasClass('hidden')).toBe(false);
expect(prometheusMetrics.$monitoredMetricsList.hasClass('hidden')).toBe(true);
});
});
describe('populateActiveMetrics', () => {
let prometheusMetrics;
beforeEach(() => {
prometheusMetrics = new PrometheusMetrics('.js-prometheus-metrics-monitoring');
});
it('should show monitored metrics list', () => {
prometheusMetrics.populateActiveMetrics(metrics);
const $metricsListLi = prometheusMetrics.$monitoredMetricsList.find('li');
expect(prometheusMetrics.$monitoredMetricsLoading.hasClass('hidden')).toBe(true);
expect(prometheusMetrics.$monitoredMetricsList.hasClass('hidden')).toBe(false);
expect(prometheusMetrics.$monitoredMetricsCount.text()).toEqual(
'3 exporters with 12 metrics were found',
);
expect($metricsListLi.length).toEqual(metrics.length);
expect($metricsListLi.first().find('.badge').text()).toEqual(`${metrics[0].active_metrics}`);
});
it('should show missing environment variables list', () => {
prometheusMetrics.populateActiveMetrics(missingVarMetrics);
expect(prometheusMetrics.$monitoredMetricsLoading.hasClass('hidden')).toBe(true);
expect(prometheusMetrics.$missingEnvVarPanel.hasClass('hidden')).toBe(false);
expect(prometheusMetrics.$missingEnvVarMetricCount.text()).toEqual('2');
expect(prometheusMetrics.$missingEnvVarPanel.find('li').length).toEqual(2);
expect(prometheusMetrics.$missingEnvVarPanel.find('.flash-container')).toBeDefined();
});
});
describe('loadActiveMetrics', () => {
let prometheusMetrics;
let mock;
function mockSuccess() {
mock.onGet(prometheusMetrics.activeMetricsEndpoint).reply(HTTP_STATUS_OK, {
data: metrics,
success: true,
});
}
function mockError() {
mock.onGet(prometheusMetrics.activeMetricsEndpoint).networkError();
}
beforeEach(() => {
jest.spyOn(axios, 'get');
prometheusMetrics = new PrometheusMetrics('.js-prometheus-metrics-monitoring');
mock = new MockAdapter(axios);
});
afterEach(() => {
mock.restore();
});
it('should show loader animation while response is being loaded and hide it when request is complete', async () => {
mockSuccess();
prometheusMetrics.loadActiveMetrics();
expect(prometheusMetrics.$monitoredMetricsLoading.hasClass('hidden')).toBe(false);
expect(axios.get).toHaveBeenCalledWith(prometheusMetrics.activeMetricsEndpoint);
await waitForPromises();
expect(prometheusMetrics.$monitoredMetricsLoading.hasClass('hidden')).toBe(true);
});
it('should show empty state if response failed to load', async () => {
mockError();
prometheusMetrics.loadActiveMetrics();
await waitForPromises();
expect(prometheusMetrics.$monitoredMetricsLoading.hasClass('hidden')).toBe(true);
expect(prometheusMetrics.$monitoredMetricsEmpty.hasClass('hidden')).toBe(false);
});
it('should populate metrics list once response is loaded', async () => {
jest.spyOn(prometheusMetrics, 'populateActiveMetrics').mockImplementation();
mockSuccess();
prometheusMetrics.loadActiveMetrics();
await waitForPromises();
expect(prometheusMetrics.populateActiveMetrics).toHaveBeenCalledWith(metrics);
});
});
});
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