Merge branch...

Merge branch '202620-charts-with-series-that-contain-multiple-labels-do-not-have-unique-colors-for-each-label' into 'master'

Fix colors in multiple series charts

See merge request gitlab-org/gitlab!28095

app/assets/javascripts/monitoring/components/charts/time_series.vue

@@ -13,7 +13,6 @@ import {
   lineWidths,
   symbolSizes,
   dateFormats,
-  chartColorValues,
 } from '../../constants';
 import { getYAxisOptions, getChartGrid, getTooltipFormatter } from './options';
 import { makeDataSeries } from '~/helpers/monitor_helper';
@@ -124,7 +123,7 @@ export default {
       // Transforms & supplements query data to render appropriate labels & styles
       // Input: [{ queryAttributes1 }, { queryAttributes2 }]
       // Output: [{ seriesAttributes1 }, { seriesAttributes2 }]
-      return this.graphData.metrics.reduce((acc, query, i) => {
+      return this.graphData.metrics.reduce((acc, query) => {
         const { appearance } = query;
         const lineType =
           appearance && appearance.line && appearance.line.type
@@ -145,7 +144,6 @@ export default {
           lineStyle: {
             type: lineType,
             width: lineWidth,
-            color: chartColorValues[i % chartColorValues.length],
           },
           showSymbol: false,
           areaStyle: this.graphData.type === 'area-chart' ? areaStyle : undefined,

app/assets/javascripts/monitoring/constants.js

@@ -67,13 +67,6 @@ export const colorValues = {
   anomalyAreaColor: '#1f78d1',
 };
 
-export const chartColorValues = [
-  '#1f78d1', // $blue-500 (see variables.scss)
-  '#1aaa55', // $green-500
-  '#fc9403', // $orange-500
-  '#6d49cb', // $purple
-];
-
 export const lineTypes = {
   default: 'solid',
 };

changelogs/unreleased/202620-charts-with-series-that-contain-multiple-labels-do-not-have-unique.yml

+---
+title: Fix wrong colors displayed in charts
+merge_request: 28095
+author:
+type: fixed

spec/frontend/monitoring/components/charts/time_series_spec.js

-import { shallowMount } from '@vue/test-utils';
+import { mount } from '@vue/test-utils';
 import { setTestTimeout } from 'helpers/timeout';
 import { GlLink } from '@gitlab/ui';
-import { GlAreaChart, GlLineChart, GlChartSeriesLabel } from '@gitlab/ui/dist/charts';
+import {
+  GlAreaChart,
+  GlLineChart,
+  GlChartSeriesLabel,
+  GlChartLegend,
+} from '@gitlab/ui/dist/charts';
 import { cloneDeep } from 'lodash';
 import { shallowWrapperContainsSlotText } from 'helpers/vue_test_utils_helper';
-import { chartColorValues } from '~/monitoring/constants';
 import { createStore } from '~/monitoring/stores';
 import TimeSeries from '~/monitoring/components/charts/time_series.vue';
 import * as types from '~/monitoring/stores/mutation_types';
@@ -42,13 +46,16 @@ describe('Time series component', () => {
   let store;
 
   const makeTimeSeriesChart = (graphData, type) =>
-    shallowMount(TimeSeries, {
+    mount(TimeSeries, {
       propsData: {
         graphData: { ...graphData, type },
         deploymentData: store.state.monitoringDashboard.deploymentData,
         projectPath: `${mockHost}${mockProjectDir}`,
       },
       store,
+      stubs: {
+        GlPopover: true,
+      },
     });
 
   describe('With a single time series', () => {
@@ -308,10 +315,6 @@ describe('Time series component', () => {
           it('formats line width correctly', () => {
             expect(chartData[0].lineStyle.width).toBe(2);
           });
-
-          it('formats line color correctly', () => {
-            expect(chartData[0].lineStyle.color).toBe(chartColorValues[0]);
-          });
         });
 
         describe('chartOptions', () => {
@@ -557,19 +560,39 @@ describe('Time series component', () => {
         timeSeriesChart.destroy();
       });
 
-      describe('computed', () => {
-        let chartData;
+      describe('Color match', () => {
+        let lineColors;
 
         beforeEach(() => {
-          ({ chartData } = timeSeriesChart.vm);
+          lineColors = timeSeriesChart
+            .find(GlAreaChart)
+            .vm.series.map(item => item.lineStyle.color);
+        });
+
+        it('should contain different colors for contiguous time series', () => {
+          lineColors.forEach((color, index) => {
+            expect(color).not.toBe(lineColors[index + 1]);
+          });
+        });
+
+        it('should match series color with tooltip label color', () => {
+          const labels = timeSeriesChart.findAll(GlChartSeriesLabel);
+
+          lineColors.forEach((color, index) => {
+            const labelColor = labels.at(index).props('color');
+            expect(color).toBe(labelColor);
+          });
         });
 
-        it('should contain different colors for each time series', () => {
-          expect(chartData[0].lineStyle.color).toBe('#1f78d1');
-          expect(chartData[1].lineStyle.color).toBe('#1aaa55');
-          expect(chartData[2].lineStyle.color).toBe('#fc9403');
-          expect(chartData[3].lineStyle.color).toBe('#6d49cb');
-          expect(chartData[4].lineStyle.color).toBe('#1f78d1');
+        it('should match series color with legend color', () => {
+          const legendColors = timeSeriesChart
+            .find(GlChartLegend)
+            .props('seriesInfo')
+            .map(item => item.color);
+
+          lineColors.forEach((color, index) => {
+            expect(color).toBe(legendColors[index]);
+          });
         });
       });
     });