KT-1389 Ctrl-Alt-B on class declaration does not work

#KT-1389 In Progress

idea/testData/navigation/implementations/ClassNavigation.kt

@@ -0,0 +1,7 @@
+package testing
+
+open class <caret>Test
+
+class TestOther : Test()
+
+// REF: JetLightClass:testing.TestOther

idea/tests/org/jetbrains/jet/plugin/navigation/JetGotoImplementationTest.java

@@ -0,0 +1,76 @@
+/*
+ * Copyright 2010-2012 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.jetbrains.jet.plugin.navigation;
+
+import com.google.common.base.Function;
+import com.google.common.collect.Lists;
+import com.intellij.codeInsight.navigation.GotoImplementationHandler;
+import com.intellij.codeInsight.navigation.GotoTargetHandler;
+import com.intellij.openapi.projectRoots.Sdk;
+import com.intellij.psi.PsiElement;
+import com.intellij.testFramework.LightCodeInsightTestCase;
+import org.jetbrains.annotations.Nullable;
+import org.jetbrains.jet.plugin.PluginTestCaseBase;
+import org.jetbrains.jet.testing.InTextDirectivesUtils;
+
+import java.io.File;
+import java.util.Arrays;
+import java.util.List;
+
+/**
+ * @author Nikolay Krasko
+ */
+public class JetGotoImplementationTest extends LightCodeInsightTestCase {
+    public void testClassNavigation() {
+        doTest();
+    }
+
+    @Override
+    protected String getTestDataPath() {
+        return new File(PluginTestCaseBase.getTestDataPathBase(), "/navigation/implementations").getPath() +
+               File.separator;
+    }
+
+    @Override
+    protected Sdk getProjectJDK() {
+        return PluginTestCaseBase.jdkFromIdeaHome();
+    }
+
+    protected void doTest() {
+        configureByFile(getTestName(false) + ".kt");
+
+        List<String> expectedReferences = Arrays.asList(
+                InTextDirectivesUtils.findListWithPrefix("// REF:", getEditor().getDocument().getText()));
+
+        GotoTargetHandler.GotoData elements = new GotoImplementationHandler().getSourceAndTargetElements(getEditor(), getFile());
+
+        if (elements != null) {
+            List<String> psiElements = Lists.transform(Arrays.asList(elements.targets), new Function<PsiElement, String>() {
+                @Override
+                public String apply(@Nullable PsiElement element) {
+                    assertNotNull(element);
+                    return element.toString();
+                }
+            });
+
+            assertOrderedEquals(expectedReferences, psiElements);
+        }
+        else {
+            assertEmpty(expectedReferences);
+        }
+    }
+}