publish jUnit test result file from karma tests

Test plan:
* run `yarn test`
* there should be xml file in coverage-js/karma-test-results.xml
  With the spec results that we will use for Jenkins builds

Change-Id: Ic68de197d2b52dbccdf58dc2d148aef1f2ca2646
Reviewed-on: https://gerrit.instructure.com/135949
Tested-by: Jenkins
Reviewed-by: Robert Lamb <[email protected]>
Product-Review: Ryan Shaw <[email protected]>
QA-Review: Ryan Shaw <[email protected]>

karma.conf.js

@@ -11,10 +11,22 @@ const karmaConfig = {
   exclude: [],
 
   // 'dots', 'progress', 'junit', 'growl', 'coverage', 'spec'
-  reporters: ['progress'],
+  reporters: ['spec', 'junit'],
   // enable the verbose reporter if you want to have more information of where/how specs fail
   // reporters: ['verbose'],
 
+  // this is to make a nice "spec failures" report in the jenkins build instead of having to look at the log output
+  junitReporter: {
+    outputDir: 'coverage-js', // just reusing same dir as the coverage stuff so it doesn't need its own .gitignore
+    outputFile: 'karma-test-results.xml', // if included, results will be saved as $outputDir/$browserName/$outputFile
+    useBrowserName: false, // add browser name to report and classes names
+  },
+  specReporter: {
+    maxLogLines: 50, // limit number of lines logged per test
+    suppressErrorSummary: false, // print error summary
+    showSpecTiming: true, // print the time elapsed for each spec
+  },
+
   port: 9876,
 
   colors: true,

package.json

@@ -119,8 +119,10 @@
     "karma-chrome-launcher": "^2.0.0",
     "karma-coverage-istanbul-reporter": "^1.3.0",
     "karma-firework-reporter": "~0.2.4",
+    "karma-junit-reporter": "^1.2.0",
     "karma-qunit": "~1.2.1",
     "karma-sourcemap-loader": "^0.3.7",
+    "karma-spec-reporter": "^0.0.32",
     "karma-verbose-reporter": "^0.0.6",
     "karma-webpack": "^2.0.5",
     "merge-stream": "^1.0.1",

yarn.lock

@@ -5609,6 +5609,13 @@ karma-firework-reporter@~0.2.4:
     request "~2.33.0"
     rsvp "~3.0.3"
 
+karma-junit-reporter@^1.2.0:
+  version "1.2.0"
+  resolved "https://registry.yarnpkg.com/karma-junit-reporter/-/karma-junit-reporter-1.2.0.tgz#4f9c40cedfb1a395f8aef876abf96189917c6396"
+  dependencies:
+    path-is-absolute "^1.0.0"
+    xmlbuilder "8.2.2"
+
 karma-qunit@~1.2.1:
   version "1.2.1"
   resolved "https://registry.yarnpkg.com/karma-qunit/-/karma-qunit-1.2.1.tgz#88252afd2127bc03b0cc31978ed6882b139f470a"
@@ -5619,6 +5626,12 @@ karma-sourcemap-loader@^0.3.7:
   dependencies:
     graceful-fs "^4.1.2"
 
+karma-spec-reporter@^0.0.32:
+  version "0.0.32"
+  resolved "https://registry.yarnpkg.com/karma-spec-reporter/-/karma-spec-reporter-0.0.32.tgz#2e9c7207ea726771260259f82becb543209e440a"
+  dependencies:
+    colors "^1.1.2"
+
 karma-verbose-reporter@^0.0.6:
   version "0.0.6"
   resolved "https://registry.yarnpkg.com/karma-verbose-reporter/-/karma-verbose-reporter-0.0.6.tgz#5909052451c607f02ac77c763791a2fe1251260c"
@@ -9786,6 +9799,10 @@ xml2js@^0.4.10:
     sax ">=0.6.0"
     xmlbuilder "~9.0.1"
 
+[email protected]:
+  version "8.2.2"
+  resolved "https://registry.yarnpkg.com/xmlbuilder/-/xmlbuilder-8.2.2.tgz#69248673410b4ba42e1a6136551d2922335aa773"
+
 xmlbuilder@^2.6.4:
   version "2.6.5"
   resolved "https://registry.yarnpkg.com/xmlbuilder/-/xmlbuilder-2.6.5.tgz#6ff7ad60fb72d22764f007a164b77f2bf1400526"