Adds Github Actions

.github/ci-gradle.properties

@@ -0,0 +1,23 @@
+#
+# Copyright 2020 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+org.gradle.daemon=false
+org.gradle.parallel=true
+org.gradle.jvmargs=-Xmx5120m
+org.gradle.workers.max=2
+
+kotlin.incremental=false
+kotlin.compiler.execution.strategy=in-process

.github/workflows/iosched.yaml

@@ -0,0 +1,78 @@
+name: iosched
+
+on:
+  push:
+    branches:
+      - main
+      - compose
+      - main_gha
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    timeout-minutes: 30
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+
+      - name: Copy CI gradle.properties
+        run: mkdir -p ~/.gradle ; cp .github/ci-gradle.properties ~/.gradle/gradle.properties
+
+      - name: Set up JDK 11
+        uses: actions/setup-java@v1
+        with:
+          java-version: 11
+
+      - uses: actions/cache@v2
+        with:
+          path: |
+            ~/.gradle/caches/modules-*
+            ~/.gradle/caches/jars-*
+            ~/.gradle/caches/build-cache-*
+          key: gradle-${{ hashFiles('checksum.txt') }}
+
+      - name: Build project
+        run: ./gradlew spotlessCheck assembleDebug --stacktrace
+
+      - name: Upload build reports
+        if: always()
+        uses: actions/upload-artifact@v2
+        with:
+          name: build-reports
+          path: mobile/build/reports/
+
+  test:
+    needs: build
+    runs-on: macOS-latest # enables hardware acceleration in the virtual machine
+    timeout-minutes: 30
+    strategy:
+      matrix:
+        api-level: [23, 26, 29]
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+
+      - name: Copy CI gradle.properties
+        run: mkdir -p ~/.gradle ; cp .github/ci-gradle.properties ~/.gradle/gradle.properties
+
+      - name: Set up JDK 11
+        uses: actions/setup-java@v1
+        with:
+          java-version: 11
+
+      - name: Run instrumentation tests
+        uses: reactivecircus/android-emulator-runner@v2
+        with:
+          api-level: ${{ matrix.api-level }}
+          arch: x86
+          disable-animations: true
+          script: ./gradlew mobile:cAT --stacktrace
+
+      - name: Upload test reports
+        if: always()
+        uses: actions/upload-artifact@v2
+        with:
+          name: test-reports
+          path: mobile/build/reports/

mobile/src/androidTest/java/com/google/samples/apps/iosched/tests/ui/CodelabTest.kt

@@ -55,6 +55,7 @@ class CodelabTest {
         onView(allOf(instanceOf(TextView::class.java), withParent(withId(R.id.toolbar))))
             .check(matches(withText(R.string.event_codelabs_title)))
         // One of the codelabs
+        Thread.sleep(400) // TODO: RecyclerView is async so it makes the test fail
         onView(withText(FakeConferenceDataSource.FAKE_CODELAB_TITLE)).check(matches(isDisplayed()))
     }
 }