Android support. Phase I. (#148)

* Android support. Phase I.

detox/.gitignore

@@ -7,6 +7,8 @@ ios/EarlGrey/Tests/UnitTests/TestRig/Resources
 ios/EarlGrey/Tests/FunctionalTests/TestRig/Resources
 Detox.framework
 Detox.framework.tar
+detox-debug.aar
+detox-release.aar
 
 lib
 

detox/android/detox/build.gradle

@@ -1,11 +1,11 @@
 apply plugin: 'com.android.library'
 
 android {
-    compileSdkVersion 25
-    buildToolsVersion "25.0.1"
+    compileSdkVersion 23
+    buildToolsVersion "23.0.1"
     defaultConfig {
         minSdkVersion 16
-        targetSdkVersion 25
+        targetSdkVersion 22
         versionCode 1
         versionName "1.0"
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
@@ -16,16 +16,20 @@ android {
             proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
         }
     }
+    publishNonDefault true
 }
 
 dependencies {
     compile fileTree(dir: 'libs', include: ['*.jar'])
-    compile project(':invoke')
-    compile 'com.android.support:appcompat-v7:25.0.1'
-    compile 'com.squareup.okhttp3:okhttp:3.5.0'
+    //compile project(':invoke')
+    compile "com.android.support:appcompat-v7:23.0.1"
+    compile 'com.squareup.okhttp3:okhttp:3.4.1'
+    compile 'com.squareup.okhttp3:okhttp-ws:3.4.1'
     testCompile 'junit:junit:4.12'
-    compile('com.android.support.test.espresso:espresso-core:2.2.2')
+    compile('com.android.support.test.espresso:espresso-core:2.2.2', {
+        exclude group: 'com.google.code.findbugs'
+    })
     androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
         exclude group: 'com.android.support', module: 'support-annotations'
     })
-}
+}

detox/android/detox/src/main/java/com/wix/detox/Delegator.java

@@ -0,0 +1,108 @@
+package com.wix.detox;
+
+import org.joor.Reflect;
+import org.joor.ReflectException;
+
+import java.lang.reflect.InvocationHandler;
+import java.lang.reflect.Method;
+
+/**
+ * Created by simonracz on 29/05/2017.
+ */
+
+/**
+ * <p>
+ * Helper class for InvocationHandlers, which delegates equals, hashCode and toString
+ * calls to Object.
+ * </p>
+ *
+ * <p>
+ * Copied from here
+ * <a href="https://docs.oracle.com/javase/8/docs/technotes/guides/reflection/proxy.html">Delegator</a>
+ * </p>
+ */
+public class Delegator implements InvocationHandler {
+
+    private static Method hashCodeMethod;
+    private static Method equalsMethod;
+    private static Method toStringMethod;
+    static {
+        try {
+            hashCodeMethod = Object.class.getMethod("hashCode", null);
+            equalsMethod =
+                    Object.class.getMethod("equals", new Class[] { Object.class });
+            toStringMethod = Object.class.getMethod("toString", null);
+        } catch (NoSuchMethodException e) {
+            throw new NoSuchMethodError(e.getMessage());
+        }
+    }
+
+    private Class[] interfaces;
+    private Object[] delegates;
+
+    public Delegator(Class[] interfaces, Object[] delegates) {
+        this.interfaces = (Class[]) interfaces.clone();
+        this.delegates = (Object[]) delegates.clone();
+    }
+
+    public Object invoke(Object proxy, Method m, Object[] args)
+            throws Throwable
+    {
+        Class declaringClass = m.getDeclaringClass();
+
+        if (declaringClass == Object.class) {
+            if (m.equals(hashCodeMethod)) {
+                return proxyHashCode(proxy);
+            } else if (m.equals(equalsMethod)) {
+                return proxyEquals(proxy, args[0]);
+            } else if (m.equals(toStringMethod)) {
+                return proxyToString(proxy);
+            } else {
+                throw new InternalError(
+                        "unexpected Object method dispatched: " + m);
+            }
+        } else {
+            for (int i = 0; i < interfaces.length; i++) {
+                if (declaringClass.isAssignableFrom(interfaces[i])) {
+                    try {
+                        return Reflect.on(delegates[i]).call(m.getName(), args).get();
+                    } catch (ReflectException e) {
+                        throw e.getCause();
+                    }
+                }
+            }
+
+            return invokeNotDelegated(proxy, m, args);
+        }
+    }
+
+    // Simple workaround for a deeply rooted issue regarding Proxy classes
+    public Object invokeAsString(String methodName) throws ReflectException {
+        return Reflect.on(delegates[0]).call(methodName).get();
+    }
+
+    // Simple workaround for a deeply rooted issue regarding Proxy classes
+    public Object invokeAsString(String methodName, Object[] args) throws ReflectException {
+        return Reflect.on(delegates[0]).call(methodName, args).get();
+    }
+
+    protected Object invokeNotDelegated(Object proxy, Method m,
+                                        Object[] args)
+            throws Throwable
+    {
+        throw new InternalError("unexpected method dispatched: " + m);
+    }
+
+    protected Integer proxyHashCode(Object proxy) {
+        return new Integer(System.identityHashCode(proxy));
+    }
+
+    protected Boolean proxyEquals(Object proxy, Object other) {
+        return (proxy == other ? Boolean.TRUE : Boolean.FALSE);
+    }
+
+    protected String proxyToString(Object proxy) {
+        return proxy.getClass().getName() + '@' +
+                Integer.toHexString(proxy.hashCode());
+    }
+}

detox/android/detox/src/main/java/com/wix/detox/Detox.java

@@ -0,0 +1,124 @@
+package com.wix.detox;
+
+import android.os.Handler;
+import android.os.Looper;
+import android.support.annotation.NonNull;
+import android.support.test.InstrumentationRegistry;
+
+/**
+ * <p>Static class.</p>
+ *
+ * <p>To start Detox tests, call runTests() from a JUnit test.
+ * This test must use AndroidJUnitTestRunner or a subclass of it, as Detox uses Espresso internally.
+ * All non-standard async code must be wrapped in an Espresso
+ * <a href="https://google.github.io/android-testing-support-library/docs/espresso/idling-resource/">IdlingResource</a>.</p>
+ *
+ * Example usage
+ * <pre>{@code
+ *@literal @runWith(AndroidJUnit4.class)
+ *@literal @LargeTest
+ * public class DetoxTest {
+ *  @literal @Rule
+ *   //The Activity that controls React Native.
+ *   public ActivityTestRule<MainActivity> mActivityRule = new ActivityTestRule(MainActivity.class);
+ *
+ *  @literal @Before
+ *   public void setUpCustomEspressoIdlingResources() {
+ *     // set up your own custom Espresso resources here
+ *   }
+ *
+ *  @literal @Test
+ *   public void runDetoxTests() {
+ *     Detox.runTests();
+ *   }
+ * }}</pre>
+ *
+ * <p>Two required parameters are detoxServer and detoxSessionId. These
+ * must be provided either by Gradle.
+ * <br>
+ *
+ * <pre>{@code
+ * android {
+ *   defaultConfig {
+ *     testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
+ *     testInstrumentationRunnerArguments = [
+ *       'detoxServer': 'ws://10.0.2.2:8001',
+ *       'detoxSessionId': '1'
+ *     ]
+ *   }
+ * }}
+ * </pre>
+ *
+ * Or through command line, e.g <br>
+ * <blockquote>{@code adb shell am instrument -w -e detoxServer ws://localhost:8001 -e detoxSessionId
+ * 1 com.example/android.support.test.runner.AndroidJUnitRunner}</blockquote></p>
+ *
+ * <p>These are automatically set using,
+ * <blockquote>{@code detox test}</blockquote></p>
+ *
+ * <p>If not set, then Detox tests are no ops. So it's safe to mix it with other tests.</p>
+ */
+public final class Detox {
+    private Detox() {
+        // static class
+    }
+
+    /**
+     * <p>
+     * Call this method from a JUnit test to invoke detox tests.
+     * </p>
+     *
+     * <p>
+     * In case you have a non-standard React Native application, consider using
+     * {@link Detox#runTests(Object)}.
+     * </p>
+     */
+    public static void runTests() {
+        Object appContext = InstrumentationRegistry.getTargetContext().getApplicationContext();
+        runTests(appContext);
+    }
+
+    /**
+     * <p>
+     * Call this method only if you have a React Native application and it
+     * doesn't implement ReactApplication.
+     * </p>
+     *
+     * Call {@link Detox#runTests()} in every other case.
+     *
+     * <p>
+     * The only requirement is that the passed in object must have
+     * a method with the signature
+     * <blockquote>{@code ReactNativeHost getReactNativeHost();}</blockquote>
+     * </p>
+     *
+     * @param reactActivityDelegate an object that has a {@code getReactNativeHost()} method
+     */
+    public static void runTests(@NonNull final Object reactActivityDelegate) {
+        // Kicks off another thread and attaches a Looper to that.
+        // The goal is to keep the test thread intact,
+        // as Loopers can't run on a thread twice.
+        Thread t = new Thread(new Runnable() {
+            @Override
+            public void run() {
+                Looper.prepare();
+                Handler handler = new Handler();
+                handler.post(new Runnable() {
+                    @Override
+                    public void run() {
+                        DetoxManager detoxManager = new DetoxManager(reactActivityDelegate);
+                        detoxManager.start();
+                    }
+                });
+                Looper.loop();
+            }
+        }, "com.wix.detox.manager");
+        t.start();
+        try {
+            t.join();
+        } catch (InterruptedException e) {
+            Thread.currentThread().interrupt();
+            throw new RuntimeException("Got interrupted", e);
+        }
+    }
+}