的实用工具类,允许检查的观点是visible
,gone
或invisible
:
public class ExtraAssertions {
public static ViewAssertion isVisible() {
return new ViewAssertion() {
public void check(View view, NoMatchingViewException noView) {
assertThat(view, new VisibilityMatcher(View.VISIBLE));
}
};
}
public static ViewAssertion isGone() {
return new ViewAssertion() {
public void check(View view, NoMatchingViewException noView) {
assertThat(view, new VisibilityMatcher(View.GONE));
}
};
}
public static ViewAssertion isInvisible() {
return new ViewAssertion() {
public void check(View view, NoMatchingViewException noView) {
assertThat(view, new VisibilityMatcher(View.INVISIBLE));
}
};
}
private static class VisibilityMatcher extends BaseMatcher<View> {
private int visibility;
public VisibilityMatcher(int visibility) {
this.visibility = visibility;
}
@Override public void describeTo(Description description) {
String visibilityName;
if (visibility == View.GONE) visibilityName = "GONE";
else if (visibility == View.VISIBLE) visibilityName = "VISIBLE";
else visibilityName = "INVISIBLE";
description.appendText("View visibility must has equals " + visibilityName);
}
@Override public boolean matches(Object o) {
if (o == null) {
if (visibility == View.GONE || visibility == View.INVISIBLE) return true;
else if (visibility == View.VISIBLE) return false;
}
if (!(o instanceof View))
throw new IllegalArgumentException("Object must be instance of View. Object is instance of " + o);
return ((View) o).getVisibility() == visibility;
}
}
}
和使用情况看起来是这样的:
onView(withId(R.id.text_message)).check(isVisible());
根据链路https://code.google.com/p/android-test-kit/wiki/EspressoSamples#Asserting_that_a_view_is_not_displayed,“上述方法效果如果视图仍然是层级的一部分“。在“声明不显示视图”中搜索文本。 – 2015-03-25 17:22:41