chore(travis): split unit test into 'core' and 'jquery'

"unit-core" consists of code+jqlite, module test, and promise A+ tests.
"unit-jquery" is code+jquery
"docs-app" includes unit and e2e tests

Splitting the unit tests into more than one job makes it faster
to rerun jobs that fail because Safari or Edge cannot complete the
suite, which seemingly happens on random.

Closes #16292

Author: Narretz

.travis.yml

@@ -15,8 +15,9 @@ branches:
 env:
   matrix:
     - JOB=ci-checks
-    - JOB=unit BROWSER_PROVIDER=saucelabs
-    - JOB=docs-e2e BROWSER_PROVIDER=saucelabs
+    - JOB=unit-core BROWSER_PROVIDER=saucelabs
+    - JOB=unit-jquery BROWSER_PROVIDER=saucelabs
+    - JOB=docs-app BROWSER_PROVIDER=saucelabs
     - JOB=e2e TEST_TARGET=jqlite BROWSER_PROVIDER=saucelabs
     - JOB=e2e TEST_TARGET=jquery BROWSER_PROVIDER=saucelabs
   global:

scripts/travis/before_build.sh

@@ -12,12 +12,12 @@ if [ "$JOB" != "ci-checks" ]; then
 fi
 
 # ci-checks and unit tests do not run against the packaged code
-if [ "$JOB" != "ci-checks" ] && [ "$JOB" != "unit" ]; then
+if [[ "$JOB" != "ci-checks" ]] && [[ "$JOB" != unit-* ]]; then
   grunt package
 fi
 
 # unit runs the docs tests too which need a built version of the code
-if [ "$JOB" = "unit" ]; then
+if [[ "$JOB" = unit-* ]]; then
   grunt bower
   grunt validate-angular-files
   grunt build

scripts/travis/build.sh

@@ -2,8 +2,18 @@
 
 set -e
 
-export BROWSER_STACK_ACCESS_KEY=`echo $BROWSER_STACK_ACCESS_KEY | rev`
-export SAUCE_ACCESS_KEY=`echo $SAUCE_ACCESS_KEY | rev`
+export BROWSER_STACK_ACCESS_KEY
+export SAUCE_ACCESS_KEY
+
+BROWSER_STACK_ACCESS_KEY=$(echo "$BROWSER_STACK_ACCESS_KEY" | rev)
+SAUCE_ACCESS_KEY=$(echo "$SAUCE_ACCESS_KEY" | rev)
+
+BROWSERS="SL_Chrome,SL_Chrome-1,\
+SL_Firefox,SL_Firefox-1,\
+SL_Safari_8,SL_Safari_9,\
+SL_iOS,\
+SL_IE_9,SL_IE_10,SL_IE_11,\
+SL_EDGE,SL_EDGE-1"
 
 case "$JOB" in
   "ci-checks")
@@ -17,18 +27,18 @@ case "$JOB" in
       yarn run commitplease -- "${TRAVIS_COMMIT_RANGE/.../..}"
     fi
     ;;
-  "unit")
-    if [[ "$BROWSER_PROVIDER" == "browserstack" ]]; then
-      BROWSERS="BS_Chrome,BS_Safari,BS_Firefox,BS_IE_9,BS_IE_10,BS_IE_11,BS_EDGE,BS_iOS_8,BS_iOS_9"
-    else
-      BROWSERS="SL_Chrome,SL_Chrome-1,SL_Firefox,SL_Firefox-1,SL_Safari_8,SL_Safari_9,SL_IE_9,SL_IE_10,SL_IE_11,SL_EDGE,SL_EDGE-1,SL_iOS"
-    fi
-
+  "unit-core")
     grunt test:promises-aplus
-    grunt test:unit --browsers="$BROWSERS" --reporters=spec
-    grunt tests:docs --browsers="$BROWSERS" --reporters=spec
+    grunt test:jqlite --browsers="$BROWSERS" --reporters=spec
+    grunt test:modules --browsers="$BROWSERS" --reporters=spec
     ;;
-  "docs-e2e")
+  "unit-jquery")
+    grunt test:jquery --browsers="$BROWSERS" --reporters=spec
+    grunt test:jquery-2.2 --browsers="$BROWSERS" --reporters=spec
+    grunt test:jquery-2.1 --browsers="$BROWSERS" --reporters=spec
+    ;;
+  "docs-app")
+    grunt tests:docs --browsers="$BROWSERS" --reporters=spec
     grunt test:travis-protractor --specs="docs/app/e2e/**/*.scenario.js"
     ;;
   "e2e")
@@ -71,6 +81,13 @@ case "$JOB" in
     fi
     ;;
   *)
-    echo "Unknown job type. Please set JOB=ci-checks, JOB=unit, JOB=deploy or JOB=e2e-*."
+    echo "Unknown job type. Please set JOB to one of\
+      'ci-checks',\
+      'unit-core',\
+      'unit-jquery',\
+      'docs-app',\
+      'e2e',\
+      or\
+      'deploy'."
     ;;
 esac