JUnit4: test function annotated with 'test' annotation

#KT-3178 Fixed

idea/src/org/jetbrains/jet/plugin/search/KotlinAnnotatedElementsSearcher.java

@@ -101,7 +101,15 @@ public class KotlinAnnotatedElementsSearcher extends AnnotatedElementsSearcher {
             @Override
             public Collection<? extends PsiElement> compute() {
                 if (useScope instanceof GlobalSearchScope) {
-                    return JetAnnotationsIndex.getInstance().get(annClass.getName(), annClass.getProject(), (GlobalSearchScope)useScope);
+                    Collection<JetAnnotationEntry> annotationEntries =
+                            JetAnnotationsIndex.getInstance().get(annClass.getName(), annClass.getProject(), (GlobalSearchScope) useScope);
+
+                    // Add annotations 'test' as often used alias when we search Test annotation
+                    if (annClass.getName().equals("Test")) {
+                        annotationEntries.addAll(JetAnnotationsIndex.getInstance().get(annClass.getName().toLowerCase(), annClass.getProject(), (GlobalSearchScope) useScope));
+                    }
+
+                    return annotationEntries;
                 }
                 /*
                 TODO getJetAnnotationCandidates works only with global search scope

idea/testData/search/junit/testJunit4Alias.kt

@@ -0,0 +1,13 @@
+import org.junit.Test as test
+import org.junit.Test
+
+class MyTestClass {
+    test fun test1() {}
+
+    [Deprecated test] fun test2() {}
+
+    Test fun test3() {}
+}
+
+// ANNOTATION: org.junit.Test
+// SEARCH: PsiMethod:test1, PsiMethod:test2, PsiMethod:test3

idea/tests/org/jetbrains/jet/search/JUnitMembersSearcherTest.java

@@ -63,6 +63,18 @@ public class JUnitMembersSearcherTest extends AbstractSearcherTest {
     };
 
     public void testJunit3() throws IOException {
+        doJUnit3test();
+    }
+
+    public void testJunit4() throws IOException {
+        doJUnit4test();
+    }
+
+    public void testJunit4Alias() throws IOException {
+        doJUnit4test();
+    }
+
+    private void doJUnit3test() throws IOException {
         myFixture.configureByFile(getFileName());
         List<String> directives = InTextDirectivesUtils.findListWithPrefix("// CLASS: ", FileUtil.loadFile(new File(getPathToFile())));
         assertFalse("Specify CLASS directive in test file", directives.isEmpty());
@@ -71,7 +83,7 @@ public class JUnitMembersSearcherTest extends AbstractSearcherTest {
         checkResult(ClassInheritorsSearch.search(psiClass, getProjectScope(), false));
     }
 
-    public void testJunit4() throws IOException {
+    private void doJUnit4test() throws IOException {
         myFixture.configureByFile(getFileName());
         List<String> directives = InTextDirectivesUtils.findListWithPrefix("// ANNOTATION: ", FileUtil.loadFile(new File(getPathToFile())));
         assertFalse("Specify ANNOTATION directive in test file", directives.isEmpty());