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DataInteraction

public class DataInteraction


An interface to interact with data displayed in AdapterViews.

This interface builds on top of ViewInteraction and should be the preferred way to interact with elements displayed inside AdapterViews.

This is necessary because an AdapterView may not load all the data held by its Adapter into the view hierarchy until a user interaction makes it necessary. Also it is more fluent / less brittle to match upon the data object being rendered into the display then the rendering itself.

By default, a DataInteraction takes place against any AdapterView found within the current screen, if you have multiple AdapterView objects displayed, you will need to narrow the selection by using the inAdapterView method.

The check and perform method operate on the top level child of the adapter view, if you need to operate on a subview (eg: a Button within the list) use the onChildView method before calling perform or check.

Summary

Nested types

public final class DataInteraction.DisplayDataMatcher

Internal matcher that is required for Espresso#onData(Matcher).

Public constructors

Public methods

DataInteraction
atPosition(Integer atPosition)

Selects the view which matches the nth position on the adapter based on the data matcher.

ViewInteraction
check(ViewAssertion assertion)

Performs an assertion on the state of the view after we force the data to be loaded.

DataInteraction
inAdapterView(Matcher<View> adapterMatcher)

Selects a particular adapter view to operate on, by default we operate on any adapter view on the screen.

DataInteraction
inRoot(Matcher<Root> rootMatcher)

Causes this data interaction to work within the Root specified by the given root matcher.

DataInteraction
onChildView(Matcher<View> childMatcher)

Causes perform and check methods to take place on a specific child view of the view returned by Adapter.getView()

ViewInteraction
perform(ViewAction[] actions)

Performs an action on the view after we force the data to be loaded.

DataInteraction

Use a different AdapterViewProtocol if the Adapter implementation does not satisfy the AdapterView contract like (@code ExpandableListView)

Public constructors

DataInteraction

public DataInteraction()

Public methods

atPosition

public DataInteraction atPosition(Integer atPosition)

Selects the view which matches the nth position on the adapter based on the data matcher.

check

public ViewInteraction check(ViewAssertion assertion)

Performs an assertion on the state of the view after we force the data to be loaded.

Returns
ViewInteraction

an ViewInteraction for more assertions or actions.

Throws
java.lang.RuntimeException java.lang.RuntimeException

when being invoked on the main thread.

inAdapterView

public DataInteraction inAdapterView(Matcher<View> adapterMatcher)

Selects a particular adapter view to operate on, by default we operate on any adapter view on the screen.

inRoot

public DataInteraction inRoot(Matcher<Root> rootMatcher)

Causes this data interaction to work within the Root specified by the given root matcher.

onChildView

public DataInteraction onChildView(Matcher<View> childMatcher)

Causes perform and check methods to take place on a specific child view of the view returned by Adapter.getView()

perform

public ViewInteraction perform(ViewAction[] actions)

Performs an action on the view after we force the data to be loaded.

Returns
ViewInteraction

an ViewInteraction for more assertions or actions.

Throws
java.lang.RuntimeException java.lang.RuntimeException

when being invoked on the main thread.

usingAdapterViewProtocol

public DataInteraction usingAdapterViewProtocol(AdapterViewProtocol adapterViewProtocol)

Use a different AdapterViewProtocol if the Adapter implementation does not satisfy the AdapterView contract like (@code ExpandableListView)