prefer T if Class<? extends T> is expected (IDEA-121339)

java/java-tests/testData/codeInsight/completion/normalSorting/PreferClassesOfExpectedClassType.java

@@ -0,0 +1,12 @@
+import java.lang.Exception;
+
+public class Foo {
+  {
+    foo(X<caret>)
+  }
+
+  void foo(Class<? extends Throwable> c) {}
+}
+
+interface XIntf {}
+class XClass {}

java/java-tests/testSrc/com/intellij/codeInsight/completion/NormalCompletionOrderingTest.groovy

@@ -620,6 +620,11 @@ interface TxANotAnno {}
     checkPreferredItems 0, 'MyEnum.BAR', 'MyEnum', 'MyEnum.FOO'
   }
 
+  public void testPreferClassesOfExpectedClassType() {
+    myFixture.addClass "class XException extends Exception {}"
+    checkPreferredItems 0, 'XException', 'XClass', 'XIntf'
+  }
+
   public void testGlobalStaticMemberStats() {
     configureNoCompletion(getTestName(false) + ".java")
     myFixture.complete(CompletionType.BASIC, 2)