spec: split coffeescript job

refs DE-128

Test Plan:
1. Ensure that the number of tests run per JS job is the same
2. Ensure that test reporting works correctly

Change-Id: I0e7f3d37627a7d13d108cf562d001bcf41e2ea8a
Reviewed-on: https://gerrit.instructure.com/c/canvas-lms/+/242560
Tested-by: Service Cloud Jenkins <svc.cloudjenkins@instructure.com>
Reviewed-by: Ryan Norton <rnorton@instructure.com>
QA-Review: Aaron Ogata <aogata@instructure.com>
Product-Review: Aaron Ogata <aogata@instructure.com>

Jenkinsfile.js

@@ -20,6 +20,7 @@
 
 library "canvas-builds-library"
 
+def COFFEE_NODE_COUNT = 2
 def DEFAULT_NODE_COUNT = 1
 def JSG_NODE_COUNT = 3
 
@@ -108,11 +109,15 @@ pipeline {
                 sh 'build/new-jenkins/js/tests-quizzes.sh'
               }
 
+              for(int i = 0; i < COFFEE_NODE_COUNT; i++) {
+                tests["Karma - Spec Group - coffee${i}"] = makeKarmaStage('coffee', i, COFFEE_NODE_COUNT)
+              }
+
               for(int i = 0; i < JSG_NODE_COUNT; i++) {
                 tests["Karma - Spec Group - jsg${i}"] = makeKarmaStage('jsg', i, JSG_NODE_COUNT)
               }
 
-              ['coffee', 'jsa', 'jsh'].each { group ->
+              ['jsa', 'jsh'].each { group ->
                 tests["Karma - Spec Group - ${group}"] = makeKarmaStage(group, 0, DEFAULT_NODE_COUNT)
               }
             }

spec/coffeescripts/views/DiscussionTopics/EditViewSpec.js

@@ -18,6 +18,7 @@
 
 import $ from 'jquery'
 import {extend, defer} from 'lodash'
+import RCELoader from 'jsx/shared/rce/serviceRCELoader'
 import SectionCollection from 'compiled/collections/SectionCollection'
 import Assignment from 'compiled/models/Assignment'
 import DueDateList from 'compiled/models/DueDateList'
@@ -96,6 +97,9 @@ QUnit.module('EditView', {
     fakeENV.setup()
     this.server = sinon.fakeServer.create({respondImmediately: true})
     sandbox.fetch.mock('path:/api/v1/courses/1/lti_apps/launch_definitions', 200)
+
+    RCELoader.RCE = null
+    return RCELoader.loadRCE()
   },
   teardown() {
     this.server.restore()

spec/coffeescripts/views/assignments/EditViewSpec.js

@@ -19,6 +19,7 @@
 import $ from 'jquery'
 import React from 'react'
 import _ from 'underscore'
+import RCELoader from 'jsx/shared/rce/serviceRCELoader'
 import SectionCollection from 'compiled/collections/SectionCollection'
 import Assignment from 'compiled/models/Assignment'
 import DueDateList from 'compiled/models/DueDateList'
@@ -124,6 +125,10 @@ QUnit.module('EditView', {
     })
     this.server = sinon.fakeServer.create()
     sandbox.fetch.mock('path:/api/v1/courses/1/lti_apps/launch_definitions', 200)
+
+    RCELoader.RCE = null
+
+    return RCELoader.loadRCE()
   },
   teardown() {
     this.server.restore()

webpack.test.config.js

@@ -28,8 +28,8 @@ const CONTEXT_COFFEESCRIPT_SPEC = 'spec/coffeescripts'
 const CONTEXT_EMBER_GRADEBOOK_SPEC = 'app/coffeescripts/ember'
 const CONTEXT_JSX_SPEC = 'spec/javascripts/jsx'
 
-const RESOURCE_COFFEESCRIPT_SPEC = /Spec.(coffee|js)$/
-const RESOURCE_EMBER_GRADEBOOK_SPEC = /\.spec.js$/
+const RESOURCE_COFFEESCRIPT_SPEC = /Spec$/
+const RESOURCE_EMBER_GRADEBOOK_SPEC = /\.spec$/
 const RESOURCE_JSX_SPEC = /Spec$/
 
 const RESOURCE_JSA_SPLIT_SPEC = /^\.\/[a-f].*Spec$/
@@ -103,8 +103,44 @@ if (process.env.JSPEC_GROUP) {
   }
 
   if (process.env.JSPEC_GROUP === 'coffee') {
+    let partitions = null
+
+    if (!isNaN(nodeIndex) && !isNaN(nodeTotal)) {
+      const allFiles = []
+
+      getAllFiles(CONTEXT_COFFEESCRIPT_SPEC, allFiles, filePath => {
+        const relativePath = filePath.replace(CONTEXT_COFFEESCRIPT_SPEC, '.').replace(/\.(coffee|js)$/, '')
+
+        return RESOURCE_COFFEESCRIPT_SPEC.test(relativePath) ? relativePath : null
+      })
+
+      getAllFiles(CONTEXT_EMBER_GRADEBOOK_SPEC, allFiles, filePath => {
+        const relativePath = filePath.replace(CONTEXT_EMBER_GRADEBOOK_SPEC, '.').replace(/\.(coffee|js)$/, '')
+
+        return RESOURCE_EMBER_GRADEBOOK_SPEC.test(relativePath) ? relativePath : null
+      })
+
+      partitions = makeSortedPartitions(allFiles, nodeTotal)
+    }
+
     ignoreResource = (resource, context) => {
-      return context.endsWith(CONTEXT_JSX_SPEC) && RESOURCE_JSX_SPEC.test(resource)
+      return (
+        (context.endsWith(CONTEXT_JSX_SPEC) && RESOURCE_JSX_SPEC.test(resource)) ||
+        (
+          partitions &&
+            context.endsWith(CONTEXT_COFFEESCRIPT_SPEC) &&
+            RESOURCE_COFFEESCRIPT_SPEC.test(resource) &&
+            !isPartitionMatch(resource, partitions, nodeIndex)
+        ) ||
+        (
+          partitions &&
+            context.endsWith(CONTEXT_EMBER_GRADEBOOK_SPEC) &&
+            // FIXME: Unlike the other specs, webpack is including the suffix
+            (resource = resource.replace(/\.(coffee|js)$/, '')) &&
+            RESOURCE_EMBER_GRADEBOOK_SPEC.test(resource) &&
+            !isPartitionMatch(resource, partitions, nodeIndex)
+        )
+      )
     }
   } else if (process.env.JSPEC_GROUP === 'jsa') {
     ignoreResource = (resource, context) => {
@@ -184,6 +220,7 @@ testWebpackConfig.resolve.alias[CONTEXT_EMBER_GRADEBOOK_SPEC] = path.resolve(__d
 testWebpackConfig.resolve.alias[CONTEXT_COFFEESCRIPT_SPEC] = path.resolve(__dirname, CONTEXT_COFFEESCRIPT_SPEC)
 testWebpackConfig.resolve.alias[CONTEXT_JSX_SPEC] = path.resolve(__dirname, CONTEXT_JSX_SPEC)
 testWebpackConfig.resolve.alias['spec/jsx'] = path.resolve(__dirname, 'spec/javascripts/jsx')
+testWebpackConfig.resolve.extensions.push('.coffee')
 testWebpackConfig.mode = 'development'
 testWebpackConfig.module.rules.unshift({
   test: [