Format test report times to adjust for ms

The test report duration times were showing `00:00:00` when
the time was in milliseconds. Now the time is formatted in seconds
or milliseconds depending on how small the number is.

app/assets/javascripts/pipelines/components/test_reports/test_summary.vue

 <script>
 import { GlDeprecatedButton, GlProgressBar } from '@gitlab/ui';
 import { __ } from '~/locale';
-import { formatTime, secondsToMilliseconds } from '~/lib/utils/datetime_utility';
 import Icon from '~/vue_shared/components/icon.vue';
+import { formattedTime } from '../../stores/test_reports/utils';
 
 export default {
   name: 'TestSummary',
@@ -39,7 +39,7 @@ export default {
       return 0;
     },
     formattedDuration() {
-      return formatTime(secondsToMilliseconds(this.report.total_time));
+      return formattedTime(this.report.total_time);
     },
     progressBarVariant() {
       if (this.successPercentage < 33) {

app/assets/javascripts/pipelines/stores/test_reports/utils.js

 import { TestStatus } from '~/pipelines/constants';
-import { formatTime, secondsToMilliseconds } from '~/lib/utils/datetime_utility';
+import { secondsToMilliseconds } from '~/lib/utils/datetime_utility';
+import { __, sprintf } from '../../../locale';
 
 export function iconForTestStatus(status) {
   switch (status) {
@@ -12,7 +13,13 @@ export function iconForTestStatus(status) {
   }
 }
 
-export const formattedTime = timeInSeconds => formatTime(secondsToMilliseconds(timeInSeconds));
+export const formattedTime = seconds => {
+  if (seconds < 1) {
+    const milliseconds = secondsToMilliseconds(seconds);
+    return sprintf(__('%{milliseconds}ms'), { milliseconds: milliseconds.toFixed(2) });
+  }
+  return sprintf(__('%{seconds}s'), { seconds: seconds.toFixed(2) });
+};
 
 export const addIconStatus = testCase => ({
   ...testCase,

changelogs/unreleased/213101-junit-report-times.yml

+---
+title: Adjust format for JUnit report duration times
+merge_request: 39644
+author:
+type: changed

locale/gitlab.pot

@@ -551,6 +551,9 @@ msgstr ""
 msgid "%{milestone} (expired)"
 msgstr ""
 
+msgid "%{milliseconds}ms"
+msgstr ""
+
 msgid "%{mrText}, this issue will be closed automatically."
 msgstr ""
 
@@ -663,6 +666,9 @@ msgstr ""
 msgid "%{retryButtonStart}Try again%{retryButtonEnd} or %{newFileButtonStart}attach a new file%{newFileButtonEnd}"
 msgstr ""
 
+msgid "%{seconds}s"
+msgstr ""
+
 msgid "%{securityScanner} is not enabled for this project. %{linkStart}More information%{linkEnd}"
 msgid_plural "%{securityScanner} are not enabled for this project. %{linkStart}More information%{linkEnd}"
 msgstr[0] ""