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package com.vaadin.ui;
import static org.junit.Assert.assertEquals;
import java.lang.reflect.Method;
import java.util.Arrays;
import java.util.HashSet;
import com.vaadin.server.ClientConnector;
import com.vaadin.server.LegacyCommunicationManager;
import com.vaadin.server.ServerRpcManager;
import com.vaadin.shared.communication.ServerRpc;
import elemental.json.JsonObject;
/**
* Base class for component unit tests, providing helper methods for e.g.
* invoking RPC and updating diff state.
*/
public class ComponentTest {
/**
* Perform operations on the component similar to what would be done when
* the component state is communicated to the client, e.g. update diff state
* and mark as clean.
*
* @param component
* the component to update
*/
public static void syncToClient(AbstractComponent component) {
updateDiffState(component);
component.getUI().getConnectorTracker().markClean(component);
}
/**
* Checks if the connector has been marked dirty.
*
* @param connector
* the connector to check
* @return <code>true</code> if the connector has been marked dirty,
* <code>false</code> otherwise
*/
public static boolean isDirty(ClientConnector connector) {
return connector.getUI().getConnectorTracker().isDirty(connector);
}
/**
* Updates the stored diff state from the current component state.
*
* @param rta
* the component to update
*/
public static void updateDiffState(AbstractComponent component) {
LegacyCommunicationManager.encodeState(component, component.getState());
}
/**
* Gets the server rpc handler registered for a component.
*
* @param connector
* the connector which listens to the RPC
* @param serverRpcClass
* the server RPC class
* @return the server RPC handler
*/
public static <T extends ServerRpc> T getRpcProxy(ClientConnector connector,
Class<T> serverRpcClass) {
try {
ServerRpcManager<?> rpcManager = connector
.getRpcManager(serverRpcClass.getName());
Method method = ServerRpcManager.class
.getDeclaredMethod("getImplementation");
method.setAccessible(true);
return serverRpcClass.cast(method.invoke(rpcManager));
} catch (ReflectiveOperationException e) {
throw new RuntimeException(e);
}
}
/**
* Asserts the set of properties that would be sent as state changes for the
* given connector.
*
* @param connector
* the connector that has state changes
* @param message
* the message to show if the properties are not as expected
* @param expectedProperties
* names of the expected properties
*/
public static void assertEncodedStateProperties(ClientConnector connector,
String message, String... expectedProperties) {
assert connector.isAttached();
JsonObject encodeState = connector.encodeState();
// Collect to HashSet so that order doesn't matter
assertEquals(message, new HashSet<>(Arrays.asList(expectedProperties)),
new HashSet<>(Arrays.asList(encodeState.keys())));
}
private ComponentTest() {
}
}
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