Adds cache and Ktlint to Github actions

Author: Manuel Vivo

.github/ci-gradle.properties

@@ -0,0 +1,23 @@
+/*
+ * Copyright 2019 Google, Inc.
+ *
+ * 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/ci.yaml

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+name: CI
+
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+
+jobs:
+  ci:
+    name: Build + Test
+    runs-on: macOS-latest # enables hardware acceleration in the virtual machine
+    strategy:
+      matrix:
+        api-level: [21, 29]
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+        with:
+          fetch-depth: 1
+
+      - name: Set up JDK 1.8
+        uses: actions/setup-java@v1
+        with:
+          java-version: 1.8
+
+      - name: Make files executable
+        run: chmod +x ./JetNews/gradlew && chmod +x ./JetNews/checksum.sh
+
+      - name: Generate cache key
+        run: ./JetNews/checksum.sh checksum.txt
+
+      - name: Copy CI gradle.properties
+        run: mkdir -p ~/.gradle ; cp .github/ci-gradle.properties ~/.gradle/gradle.properties
+
+      - uses: actions/cache@v1
+        with:
+          path: ~/.gradle/caches/modules-2
+          key: ${{ runner.os }}-gradlemodules-${{ hashFiles('checksum.txt') }}
+          restore-keys: |
+            ${{ runner.os }}-gradlemodules-
+
+      - uses: actions/cache@v1
+        with:
+          path: ~/.gradle/caches/jars-3
+          key: ${{ runner.os }}-gradlejars-${{ hashFiles('checksum.txt') }}
+          restore-keys: |
+            ${{ runner.os }}-gradlejars-
+
+      - uses: actions/cache@v1
+        with:
+          path: ~/.gradle/caches/build-cache-1
+          key: ${{ runner.os }}-gradlebuildcache-${{ hashFiles('checksum.txt') }}
+          restore-keys: |
+            ${{ runner.os }}-gradlebuildcache-
+
+      - name: Ktlint
+        run: cd JetNews && ./gradlew ktlint --stacktrace
+
+      - name: Build project
+        run: cd JetNews && ./gradlew assemble --stacktrace
+
+      - name: Run instrumentation tests
+        uses: reactivecircus/android-emulator-runner@v2
+        with:
+          api-level: ${{ matrix.api-level }}
+          arch: x86
+          disable-animations: true
+          script: cd JetNews && ./gradlew connectedCheck --stacktrace

JetNews/.github/workflows/ci.yaml

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+#
+#  Copyright 2019 Google, Inc.
+#
+#  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.
+#
+
+#!/bin/bash
+RESULT_FILE=$1
+
+if [ -f $RESULT_FILE ]; then
+  rm $RESULT_FILE
+fi
+touch $RESULT_FILE
+
+checksum_file() {
+  echo $(openssl md5 $1 | awk '{print $2}')
+}
+
+FILES=()
+while read -r -d ''; do
+	FILES+=("$REPLY")
+done < <(find . -type f \( -name "build.gradle*" -o -name "gradle-wrapper.properties" \) -print0)
+
+# Loop through files and append MD5 to result file
+for FILE in ${FILES[@]}; do
+	echo $(checksum_file $FILE) >> $RESULT_FILE
+done
+# Now sort the file so that it is
+sort $RESULT_FILE -o $RESULT_FILE