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Spoon

Distributing instrumentation tests to all your Androids.

Introduction

Android's ever-expanding ecosystem of devices creates a unique challenge to testing applications. Spoon aims to simplify this task by distributing instrumentation test execution and displaying the results in a meaningful way.

Instead of attempting to be a new form of testing, Spoon makes existing instrumentation tests more useful. Using the application APK and instrumentation APK, Spoon runs the tests on multiple devices simultaneously. Once all tests have completed a static HTML summary is generated with detailed information about each device and test.

High-level output

Spoon will run on all targets which are visible to adb devices. Plug in multiple different phones and tablets, start different configurations of emulators, or use some combination of both!

The greater diversity of the targets in use, the more useful the output will be in visualizing your applications.

Screenshots

In addition to simply running instrumentation tests, Spoon has the ability to snap screenshots at key points during your tests which are then included in the output. This allows for visual inspection of test executions across different devices.

Taking screenshots requires that you include the spoon-client JAR in your instrumentation app. In your tests call the screenshot method with a human-readable tag.

Spoon.screenshot(activity, "initial_state");
/* Normal test code... */
Spoon.screenshot(activity, "after_login");

The tag specified will be used to identify and compare screenshots taken across multiple test runs.

Results with screenshots

You can also view each test's screenshots as an animated GIF to gauge the actual sequence of interaction.

Download

Download the latest runner JAR or the latest client JAR, or grab via Maven:

<dependency>
  <groupId>com.squareup.spoon</groupId>
  <artifactId>spoon-client</artifactId>
  <version>(insert latest version)</version>
</dependency>

Execution

Spoon was designed to be run both as a standalone tool or directly as part of your build system.

You can run Spoon as a standalone tool with your application and instrumentation APKs.

java -jar spoon-runner-1.0.0-jar-with-dependencies.jar \
    --apk example-app.apk \
    --test-apk example-tests.apk

By default the output will be placed in a spoon-output/ folder of the current directory. You can control additional parameters of the execution using other flags.

Options:
    --apk               Application APK
    --fail-on-failure   Non-zero exit code on failure
    --output            Output path
    --sdk               Path to Android SDK
    --test-apk          Test application APK
    --title             Execution title
    --class-name        Test class name to run (fully-qualified)
    --method-name       Test method name to run (must also use --class-name)
    --no-animations     Disable animated gif generation
    --size              Only run test methods annotated by testSize (small, medium, large)
    --adb-timeout       Set maximum execution time per test in seconds (10min default)

If you are using Maven for compilation, a plugin is provided for easy execution. Declare the plugin in the pom.xml for the instrumentation test module.

<plugin>
  <groupId>com.squareup.spoon</groupId>
  <artifactId>spoon-maven-plugin</artifactId>
  <version>(insert latest version)</version>
</plugin>

The plugin will look for an apk dependency for the corresponding application. Typically this is specified in parallel with the jar dependency on the application.

<dependency>
  <groupId>com.example</groupId>
  <artifactId>example-app</artifactId>
  <version>${project.version}</version>
  <type>jar</type>
  <scope>provided</scope>
</dependency>
<dependency>
  <groupId>com.example</groupId>
  <artifactId>example-app</artifactId>
  <version>${project.version}</version>
  <type>apk</type>
  <scope>provided</scope>
</dependency>

You can invoke the plugin by running mvn spoon:run. The execution result will be placed in the target/spoon-output/ folder. If you want to specify a test class to run, add -Dspoon.test.class=fully.qualified.ClassName. If you only want to run a single test in that class, add -Dspoon.test.method=testAllTheThings.

For a working example see the sample application and instrumentation tests in the spoon-sample/ folder.

License

Copyright 2013 Square, 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.