ViewAssertion
public
interface
ViewAssertion
android.support.test.espresso.ViewAssertion |
Responsible for performing assertions on a View element.
This is considered part of the test framework public API - developers are free to write their own assertions as long as they meet the following requirements:
- Do not mutate the passed in view.
- Throw junit.framework.AssertionError when the view assertion does not hold.
- Implementation runs on the UI thread - so it should not do any blocking operations
- Downcasting the view to a specific type is allowed, provided there is a test that view is an instance of that type before downcasting. If not, an AssertionError should be thrown.
- It is encouraged to access non-mutating methods on the view to perform assertion.
Strongly consider using a existing ViewAssertion via the ViewAssertions utility class before writing your own assertion.
Summary
Public methods | |
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abstract
void
|
check(View view, NoMatchingViewException noViewFoundException)
Checks the state of the given view (if such a view is present). |
Public methods
check
void check (View view, NoMatchingViewException noViewFoundException)
Checks the state of the given view (if such a view is present).
Parameters | |
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view |
View : the view, if one was found during the view interaction or null if it was not (which
may be an acceptable option for an assertion) |
noViewFoundException |
NoMatchingViewException : an exception detailing why the view could not be found or null if
the view was found
|
Interfaces
Classes
Exceptions