Add frontend tests

.github/workflows/frontend.yml

@@ -0,0 +1,97 @@
+name: frontend
+on:
+  push:
+  pull_request:
+    branches:
+      - master
+      - branch-*
+    types: [opened, synchronize]
+
+env:
+  MAVEN_OPTS: "-Xms1024M -Xmx2048M -XX:MaxMetaspaceSize=1024m -XX:-UseGCOverheadLimit -Dorg.slf4j.simpleLogger.log.org.apache.maven.cli.transfer.Slf4jMavenTransferListener=warn"
+  ZEPPELIN_HELIUM_REGISTRY: helium
+  SPARK_PRINT_LAUNCH_COMMAND: "true"
+  INTERPRETERS: '!beam,!hbase,!pig,!jdbc,!file,!flink,!ignite,!kylin,!lens,!cassandra,!elasticsearch,!bigquery,!alluxio,!scio,!livy,!groovy,!sap,!java,!geode,!neo4j,!hazelcastjet,!submarine,!sparql,!mongodb'
+
+jobs:
+  run-e2e-tests-in-zeppelin-web:
+    runs-on: ubuntu-18.04
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+      - name: Set up JDK 8
+        uses: actions/setup-java@v1
+        with:
+          java-version: 8
+      - name: Cache local Maven repository
+        uses: actions/cache@v2
+        with:
+          path: |
+            ~/.m2/repository
+            !~/.m2/repository/org/apache/zeppelin/
+          key: ${{ runner.os }}-zeppelin-${{ hashFiles('**/pom.xml') }}
+          restore-keys: |
+            ${{ runner.os }}-zeppelin-
+      - name: Install application
+        run: mvn -B install -DskipTests -DskipRat -pl ${INTERPRETERS} -Phadoop2 -Pscala-2.11
+      - name: Run headless test
+        run: xvfb-run --auto-servernum --server-args="-screen 0 1024x768x24" mvn verify -DskipRat -pl zeppelin-web -Phadoop2 -Pscala-2.11 -Pweb-e2e -B
+  run-tests-in-zeppelin-web-angular:
+    runs-on: ubuntu-18.04
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+      - name: Set up JDK 8
+        uses: actions/setup-java@v1
+        with:
+          java-version: 8
+      - name: Cache local Maven repository
+        uses: actions/cache@v2
+        with:
+          path: |
+            ~/.m2/repository
+            !~/.m2/repository/org/apache/zeppelin/
+          key: ${{ runner.os }}-zeppelin-${{ hashFiles('**/pom.xml') }}
+          restore-keys: |
+            ${{ runner.os }}-zeppelin-
+      - name: Run headless test
+        run: xvfb-run --auto-servernum --server-args="-screen 0 1024x768x24" mvn package -DskipRat -pl zeppelin-web-angular -Pweb-angular -B
+
+  test-selenium-with-spark-module-for-spark-2-3:
+    runs-on: ubuntu-18.04
+    defaults:
+      run:
+        shell: bash -l {0}
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+      - name: Set up JDK 8
+        uses: actions/setup-java@v1
+        with:
+          java-version: 8
+      - name: Cache local Maven repository
+        uses: actions/cache@v2
+        with:
+          path: |
+            ~/.m2/repository
+            !~/.m2/repository/org/apache/zeppelin/
+          key: ${{ runner.os }}-zeppelin-${{ hashFiles('**/pom.xml') }}
+          restore-keys: |
+            ${{ runner.os }}-zeppelin-
+      - name: Setup conda environment with python 3.7 and R
+        uses: conda-incubator/setup-miniconda@v2
+        with:
+          activate-environment: python_3_with_R
+          environment-file: testing/env_python_3_with_R.yml
+          python-version: 3.7
+          auto-activate-base: false
+      - name: Make IRkernel available to Jupyter
+        run: |
+          R -e "IRkernel::installspec()"
+      - name: install environment
+        run: |
+          mvn clean install -DskipTests -DskipRat -pl ${INTERPRETERS} -Pspark-2.3 -Phadoop2 -Phelium-dev -Pexamples -Pintegration -Pspark-scala-2.11 -B
+          mvn clean package -T 2C -pl zeppelin-plugins -amd -B
+          ./testing/downloadSpark.sh "2.3.2" "2.6"
+      - name: run tests
+        run: xvfb-run --auto-servernum --server-args="-screen 0 1600x1024x16" mvn verify -DskipRat -Pspark-2.3 -Phadoop2 -Phelium-dev -Pexamples -Pintegration -Pspark-scala-2.11 -B -pl zeppelin-integration -DfailIfNoTests=false