Add a script to run the integration test against emulated devices

This way, at least we know that the 'git clone' operation works on
different API versions.

scripts/test.sh

@@ -0,0 +1,36 @@
+#!/usr/bin/env bash
+
+set -eux
+
+SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"
+cd "$SCRIPT_DIR/.."
+
+touch ~/.android/repositories.cfg
+
+# Download all Images
+for i in $(seq 21 28); do
+    echo "Downling SDK $i"
+    sdkmanager "system-images;android-$i;google_apis;x86"
+done
+
+
+for i in $(seq 21 28); do
+    echo "Creating for API $i"
+
+    NAME="gitjournal_test_api_$i"
+    echo no | avdmanager create avd -n "$NAME" -f -k "system-images;android-$i;google_apis;x86"
+
+    # Launch the device
+    emulator -ports 5570,5571 -avd "$NAME" &
+    EMULATOR_PID=$!
+
+    adb wait-for-device
+    adb -s emulator-5570 shell 'while [[ -z $(getprop sys.boot_completed) ]]; do sleep 1; done; input keyevent 82'
+
+    # Run the test
+    flutter drive --target=test_driver/git.dart
+
+    adb -s emulator-5570 emu kill
+    kill -9 $EMULATOR_PID
+    avdmanager delete avd -n "$NAME"
+done