javadoc and tests for flow/view variables

spring-webflow/src/test/java/org/springframework/webflow/engine/ViewVariableTests.java

@@ -0,0 +1,60 @@
+package org.springframework.webflow.engine;
+
+import junit.framework.TestCase;
+
+import org.springframework.webflow.execution.RequestContext;
+import org.springframework.webflow.test.MockRequestContext;
+
+public class ViewVariableTests extends TestCase {
+
+	private boolean restoreCalled;
+
+	public void testCreateVariable() {
+		ViewVariable var = new ViewVariable("foo", new VariableValueFactory() {
+			public Object createInitialValue(RequestContext context) {
+				return "bar";
+			}
+
+			public void restoreReferences(Object value, RequestContext context) {
+			}
+		});
+		MockRequestContext context = new MockRequestContext();
+		var.create(context);
+		assertEquals("bar", context.getFlowScope().get("foo"));
+	}
+
+	public void testDestroyVariable() {
+		ViewVariable var = new ViewVariable("foo", new VariableValueFactory() {
+			public Object createInitialValue(RequestContext context) {
+				return "bar";
+			}
+
+			public void restoreReferences(Object value, RequestContext context) {
+			}
+		});
+		MockRequestContext context = new MockRequestContext();
+		var.create(context);
+		assertEquals("bar", context.getFlowScope().get("foo"));
+		var.destroy(context);
+		assertFalse(context.getFlowScope().contains("foo"));
+	}
+
+	public void testRestoreVariable() {
+		ViewVariable var = new ViewVariable("foo", new VariableValueFactory() {
+			public Object createInitialValue(RequestContext context) {
+				return "bar";
+			}
+
+			public void restoreReferences(Object value, RequestContext context) {
+				restoreCalled = true;
+				assertEquals("bar", value);
+			}
+		});
+		MockRequestContext context = new MockRequestContext();
+		var.create(context);
+		var.restore(context);
+		assertEquals("bar", context.getFlowScope().get("foo"));
+		assertTrue(restoreCalled);
+	}
+
+}