diff --git a/.travis.yml b/.travis.yml
index b370eb809..d2f147c39 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -13,14 +13,9 @@ matrix:
       node_js: stable
       osx_image: xcode8.3
 
-before_install:
-- npm install google-closure-library
-- npm install google-closure-compiler
-- npm install webdriverio
-# Symlink closure library
-- ln -s $(npm root)/google-closure-library ../closure-library
-
 before_script:
+  # Symlink closure library used by test/jsunit
+  - ln -s $(npm root)/google-closure-library ../closure-library
   - export DISPLAY=:99.0
   - if [ "${TRAVIS_OS_NAME}" == "linux" ]; then ( tests/scripts/setup_linux_env.sh ) fi
   - if [ "${TRAVIS_OS_NAME}" == "osx" ]; then ( tests/scripts/setup_osx_env.sh ) fi
@@ -30,4 +25,4 @@ script:
   - set -x
   - npm run lint
   - npm test
-  - cd tests/compile; compile.sh; cd ..
+  - tests/compile/compile.sh
diff --git a/package.json b/package.json
index 6d5a792fb..0637984c5 100644
--- a/package.json
+++ b/package.json
@@ -27,6 +27,7 @@
   "private": true,
   "devDependencies": {
     "eslint": "^4.16",
+    "google-closure-compiler": "^20180506.0.0",
     "google-closure-library": "^20180506.0.0",
     "gulp": "^3.9.1",
     "gulp-concat": "^2.6.1",
diff --git a/tests/compile/compile.sh b/tests/compile/compile.sh
index 9ddd44f35..eb59b3af9 100755
--- a/tests/compile/compile.sh
+++ b/tests/compile/compile.sh
@@ -1,8 +1,12 @@
+echo "Executing compile.sh from $(pwd)"
+
+# TODO: Find relative path to Blockly root. For now, assume it is pwd.
+
 # Find the Closure Compiler.
 if [ -f "$(npm root)/google-closure-compiler/compiler.jar" ]; then
   COMPILER="$(npm root)/google-closure-compiler/compiler.jar"
-elif [ -f *compiler*.jar ]; then
-  COMPILER="*compiler*.jar"
+elif [ -f tests/compile/*compiler*.jar ]; then
+  COMPILER="tests/compile/*compiler*.jar"
   # TODO: Check whether multiple files were found.
 else
   echo "ERROR: Closure Compiler not found."
@@ -12,21 +16,25 @@ else
 fi
 
 echo Using $COMPILER as the compiler.
-rm main_compressed.js 2> /dev/null
+rm tests/compile/main_compressed.js 2> /dev/null
 echo Compiling Blockly...
-java -jar $COMPILER --js='main.js' \
-  --js='../../core/**.js' \
-  --js='../../blocks/**.js' \
-  --js='../../generators/**.js' \
-  --js='../../msg/js/**.js' \
-  --js='../../../closure-library/closure/goog/**.js' \
-  --js='../../../closure-library/third_party/closure/goog/**.js' \
+COMPILATION_COMMAND="java -jar $COMPILER --js='tests/compile/main.js' \
+  --js='core/**.js' \
+  --js='blocks/**.js' \
+  --js='generators/**.js' \
+  --js='msg/js/**.js' \
+  --js='../closure-library/closure/goog/**.js' \
+  --js='../closure-library/third_party/closure/goog/**.js' \
   --generate_exports \
-  --externs ../../externs/svg-externs.js \
+  --externs externs/svg-externs.js \
   --compilation_level ADVANCED_OPTIMIZATIONS \
   --dependency_mode=STRICT --entry_point=Main \
-  --js_output_file main_compressed.js
-if [ -s main_compressed.js ]; then
+  --js_output_file tests/compile/main_compressed.js"
+echo $COMPILATION_COMMAND
+$COMPILATION_COMMAND
+EXIT_CODE=$?
+echo "Compiler exit code: $EXIT_CODE"
+if [ "$EXIT_CODE" -eq 0 ] && [ -s tests/compile/main_compressed.js ]; then
   echo Compilation OK.
 else
   echo Compilation FAIL.
diff --git a/tests/compile/main.js b/tests/compile/main.js
index 3fd1115a3..da19885e9 100644
--- a/tests/compile/main.js
+++ b/tests/compile/main.js
@@ -8,6 +8,12 @@ goog.require('Blockly.Constants.Logic');
 goog.require('Blockly.Constants.Loops');
 goog.require('Blockly.Constants.Math');
 goog.require('Blockly.Constants.Text');
+// TODO: Add the following. Expecting additional warnings.
+//goog.require('Blockly.Constants.Lists');
+//goog.require('Blockly.Constants.Colour');
+//goog.require('Blockly.Constants.Variables');
+//goog.require('Blockly.Constants.VariablesDynamic');
+//goog.require('Blockly.Constants.procedures');
 
 Main.init = function() {
   Blockly.inject('blocklyDiv', {