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/*
* Copyright (C) 2013 DroidDriver committers
*
* 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.
*/
package com.google.android.droiddriver.helpers;
import android.annotation.TargetApi;
import android.app.Instrumentation;
import android.os.Build;
import android.os.Bundle;
import com.google.android.droiddriver.DroidDriver;
import com.google.android.droiddriver.exceptions.DroidDriverException;
import com.google.android.droiddriver.instrumentation.InstrumentationDriver;
import com.google.android.droiddriver.uiautomation.UiAutomationDriver;
import java.lang.reflect.InvocationTargetException;
/**
* Static utility methods pertaining to {@link DroidDriver} instances.
*/
public class DroidDrivers {
private static DroidDriver driver;
private static Instrumentation instrumentation;
private static Bundle options;
/**
* Gets the singleton driver. Throws if {@link #init} has not been called.
*/
public static DroidDriver get() {
if (DroidDrivers.driver == null) {
throw new DroidDriverException("init() has not been called");
}
return DroidDrivers.driver;
}
/**
* Initializes the singleton driver. The singleton driver is NOT required, but
* it is handy and using a singleton driver can avoid memory leak if you have
* many instances around (for example, one in every test -- JUnit framework
* keeps the test instances in memory after running them).
*/
public static void init(DroidDriver driver) {
if (DroidDrivers.driver != null) {
throw new DroidDriverException("init() can only be called once");
}
DroidDrivers.driver = driver;
}
/**
* Initializes for the convenience methods {@link #getInstrumentation()} and
* {@link #getOptions()}. Called by
* {@link com.google.android.droiddriver.runner.TestRunner}. If a custom
* runner is used, this method must be called appropriately, otherwise the two
* convenience methods won't work.
*/
public static void initInstrumentation(Instrumentation instrumentation, Bundle arguments) {
if (DroidDrivers.instrumentation != null) {
throw new DroidDriverException("DroidDrivers.initInstrumentation() can only be called once");
}
DroidDrivers.instrumentation = instrumentation;
DroidDrivers.options = arguments;
}
public static Instrumentation getInstrumentation() {
return instrumentation;
}
/**
* Gets the <a href=
* "http://developer.android.com/tools/testing/testing_otheride.html#AMOptionsSyntax"
* >am instrument options</a>.
*/
public static Bundle getOptions() {
return options;
}
/**
* Returns whether the running target (device or emulator) has
* {@link android.app.UiAutomation} API, which is introduced in SDK API 18
* (JELLY_BEAN_MR2).
*/
public static boolean hasUiAutomation() {
return Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR2;
}
/**
* Returns a new DroidDriver instance. If am instrument options have "driver",
* treat it as the fully-qualified-class-name and create a new instance of it
* with {@code instrumentation} as the argument; otherwise a new
* platform-dependent default DroidDriver instance.
*/
public static DroidDriver newDriver(Instrumentation instrumentation) {
String driverClass = options == null ? null : options.getString("driver");
if (driverClass != null) {
try {
return (DroidDriver) Class.forName(driverClass).getConstructor(Instrumentation.class)
.newInstance(instrumentation);
} catch (ClassNotFoundException e) {
throw new DroidDriverException(e);
} catch (NoSuchMethodException e) {
throw new DroidDriverException(e);
} catch (InstantiationException e) {
throw new DroidDriverException(e);
} catch (IllegalAccessException e) {
throw new DroidDriverException(e);
} catch (IllegalArgumentException e) {
throw new DroidDriverException(e);
} catch (InvocationTargetException e) {
throw new DroidDriverException(e);
}
}
// If "driver" is not specified, return default.
if (hasUiAutomation()) {
return newUiAutomationDriver(instrumentation);
}
return newInstrumentationDriver(instrumentation);
}
/** Returns a new InstrumentationDriver */
public static InstrumentationDriver newInstrumentationDriver(Instrumentation instrumentation) {
return new InstrumentationDriver(instrumentation);
}
/** Returns a new UiAutomationDriver */
@TargetApi(18)
public static UiAutomationDriver newUiAutomationDriver(Instrumentation instrumentation) {
if (!hasUiAutomation()) {
throw new DroidDriverException("UiAutomation is not available below API 18. "
+ "See http://developer.android.com/reference/android/app/UiAutomation.html");
}
if (instrumentation.getUiAutomation() == null) {
throw new DroidDriverException(
"uiAutomation==null: did you forget to set '-w' flag for 'am instrument'?");
}
return new UiAutomationDriver(instrumentation);
}
}
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