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ViewAssertion

interface 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 functions
`Unit`	`check(view: View!, noViewFoundException: NoMatchingViewException!)` Checks the state of the given view (if such a view is present).

Public functions

check

fun check(view: View!, noViewFoundException: NoMatchingViewException!): Unit

Checks the state of the given view (if such a view is present).

Parameters
`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