LVTI: warnings for var as class name (IDEA-178868)

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/advHighlighting8/VarClassesWarning.java

@@ -0,0 +1 @@
+class <warning descr="Usage of 'var' as class name might not be supported in releases after java 9">var</warning> {}

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/advLVTI/VarClassNameConflicts.java

@@ -0,0 +1,5 @@
+class Main {
+  class <error descr="'var' is a restricted local variable type and cannot be used for type declarations">var</error> {}
+
+  <<error descr="'var' is a restricted local variable type and cannot be used for type declarations">var</error> extends String> void foo() {}
+}

java/java-tests/testSrc/com/intellij/java/codeInsight/daemon/LightAdvHighlightingJdk8Test.java

@@ -45,6 +45,7 @@ public class LightAdvHighlightingJdk8Test extends LightDaemonAnalyzerTestCase {
   public void testLambdaExpressions() { doTest(false, true); }
   public void testUnsupportedFeatures() { doTest(false, false); }
   public void testModulesNotSupported() { doTest(false, false); }
+  public void testVarClassesWarning() { doTest(true, false); }
 
   public void testTooManyVarargsPolyArguments() {
     doTest(true, false);

java/java-tests/testSrc/com/intellij/java/codeInsight/daemon/LightAdvLVTIHighlightingTest.java

@@ -35,9 +35,8 @@ public class LightAdvLVTIHighlightingTest extends LightDaemonAnalyzerTestCase {
     doTest(BASE_PATH + "/" + getTestName(false) + ".java", false, false);
   }
 
-  public void testSimpleAvailability() {
-    doTest();
-  }
+  public void testSimpleAvailability() { doTest(); }
+  public void testVarClassNameConflicts() { doTest(); }
 
   @Override
   protected Sdk getProjectJDK() {