Completion: added a test

idea/testData/completion/handlers/ClassFromClassObject.kt

@@ -0,0 +1,9 @@
+class Test {
+    class object {
+        class Some
+    }
+}
+
+fun test() {
+    Test.S<caret>
+}

idea/testData/completion/handlers/ClassFromClassObject.kt.after

@@ -0,0 +1,9 @@
+class Test {
+    class object {
+        class Some
+    }
+}
+
+fun test() {
+    Test.Some<caret>
+}

idea/tests/org/jetbrains/jet/completion/handlers/BasicCompletionHandlerTest.kt

@@ -128,4 +128,5 @@ public class BasicCompletionHandlerTest : CompletionHandlerTestBase(){
 
     fun testEnumMember() = doTest(1, "A", null, '\n')
     fun testEnumMember1() = doTest(1, "A", null, '\n')
+    fun testClassFromClassObject() = doTest(1, "Some", null, '\n')
 }