output jest unit tests in junit format

Author: BryceLTaylor

.circleci/config.yml

@@ -20,7 +20,7 @@ aliases:
     command: npm run lint
   - &unit
     name: "run unit tests"
-    command: npm run unit
+    command: JEST_JUNIT_OUTPUT_NAME=unit-jest-results.xml npm run unit -- --reporters=jest-junit
   - &build
     name: "run npm build"
     command: |

.gitignore

@@ -16,3 +16,6 @@ dist/*
 # generated translation files
 /translations
 /locale
+
+# tests
+/test/results/*

package-lock.json

@@ -13,7 +13,7 @@
     "lint": "eslint . --ext .js,.jsx",
     "start": "webpack-dev-server",
     "test": "npm run lint && npm run unit && NODE_ENV=production npm run build",
-    "unit": "jest",
+    "unit": "jest --reporters=default",
     "watch": "webpack --progress --colors --watch"
   },
   "author": "Massachusetts Institute of Technology",
@@ -69,6 +69,7 @@
     "html-webpack-plugin": "3.2.0",
     "jest": "22.4.4",
     "jest-canvas-mock": "2.3.1",
+    "jest-junit": "13.0.0",
     "json": "9.0.6",
     "lodash.defaultsdeep": "4.6.1",
     "mkdirp": "1.0.4",
@@ -114,6 +115,9 @@
       "\\.(css|less)$": "<rootDir>/test/__mocks__/styleMock.js"
     }
   },
+  "jest-junit": {
+    "outputDirectory": "./test/results"
+  },
   "browserslist": [
     "last 3 versions",
     "Safari >= 8",