android – 如何让Spoon为Espresso测试拍摄截图?
作者:互联网
我一直在努力追随the instructions on getting Spoon 1.1.14 to take screenshots for failing Espresso tests.
使用custom Espresso FailureHandler配置此功能的最佳方法是什么?
解决方法:
这就是我现在这样做的方式:
public class MainScreenTest extends BaseStatelessBlackBoxEspressoTest<LaunchActivity> {
public MainScreenTest() {
super(LaunchActivity.class);
}
public void testMainScreen() {
// Unfortunately this must be explicitly called in each test :-(
setUpFailureHandler();
onView(withId(R.id.main_circle)).
check(matches(isDisplayed()));
}
}
我的基础Espresso测试类设置自定义FailureHandler(我喜欢使用基类来保存许多其他常用代码):
public abstract class BaseStatelessBlackBoxEspressoTest<T extends Activity> extends BaseBlackBoxTest<T> {
public BaseStatelessBlackBoxEspressoTest(Class clazz) {
super(clazz);
}
@Before
public void setUp() throws Exception {
super.setUp();
getActivity();
}
public void setUpFailureHandler() {
// Get the test class and method. These have to match those of the test
// being run, otherwise the screenshot will not be displayed in the Spoon
// HTML output. We cannot call this code directly in setUp, because at
// that point the current test method is not yet in the stack.
StackTraceElement[] trace = Thread.currentThread().getStackTrace();
String testClass = trace[3].getClassName();
String testMethod = trace[3].getMethodName();
Espresso.setFailureHandler(new CustomFailureHandler(
getInstrumentation().getTargetContext(),
testClass,
testMethod));
}
private static class CustomFailureHandler implements FailureHandler {
private final FailureHandler mDelegate;
private String mClassName;
private String mMethodName;
public CustomFailureHandler(Context targetContext, String className, String methodName) {
mDelegate = new DefaultFailureHandler(targetContext);
mClassName = className;
mMethodName = methodName;
}
@Override
public void handle(Throwable error, Matcher<View> viewMatcher) {
try {
mDelegate.handle(error, viewMatcher);
} catch (Exception e) {
SpoonScreenshotAction.perform("espresso_assertion_failed", mClassName, mMethodName);
throw e;
}
}
}
}
…这是从the Gist posted by Square略微修改的截图代码:
/**
* Source: https://github.com/square/spoon/issues/214#issuecomment-81979248
*/
public final class SpoonScreenshotAction implements ViewAction {
private final String tag;
private final String testClass;
private final String testMethod;
public SpoonScreenshotAction(String tag, String testClass, String testMethod) {
this.tag = tag;
this.testClass = testClass;
this.testMethod = testMethod;
}
@Override
public Matcher<View> getConstraints() {
return Matchers.anything();
}
@Override
public String getDescription() {
return "Taking a screenshot using spoon.";
}
@Override
public void perform(UiController uiController, View view) {
Spoon.screenshot(getActivity(view), tag, testClass, testMethod);
}
private static Activity getActivity(View view) {
Context context = view.getContext();
while (!(context instanceof Activity)) {
if (context instanceof ContextWrapper) {
context = ((ContextWrapper) context).getBaseContext();
} else {
throw new IllegalStateException("Got a context of class "
+ context.getClass()
+ " and I don't know how to get the Activity from it");
}
}
return (Activity) context;
}
public static void perform(String tag, String className, String methodName) {
onView(isRoot()).perform(new SpoonScreenshotAction(tag, className, methodName));
}
}
我很乐意找到一种避免在每次测试中调用setUpFailureHandler()的方法 – 如果您对如何避免这种情况有一个好主意,请告诉我!
标签:android,android-espresso,spoon 来源: https://codeday.me/bug/20191005/1855326.html