IDEA-65566 Allow 'NotNull' as the default element behavior for a given class or package

java/java-tests/testData/inspection/dataFlow/fixture/ParametersAreNonnullByDefault.java

@@ -0,0 +1,25 @@
+import foo.*;
+
+class Some {
+  void foo() {
+    NotNullClass.foo(<warning descr="Passing 'null' argument to parameter annotated as @NotNull">null</warning>);
+    NotNullClass.foo("a");
+    
+    NullableClass.foo(null);
+    NullableClass.foo("a");
+    
+    AnotherPackageNotNull.foo(<warning descr="Passing 'null' argument to parameter annotated as @NotNull">null</warning>);
+    AnotherPackageNotNull.foo("a");
+  }
+
+}
+
+@javax.annotation.ParametersAreNonnullByDefault
+class NotNullClass {
+  static void foo(String s) {}
+  
+}
+@javax.annotation.ParametersAreNullableByDefault
+class NullableClass {
+  static void foo(String s) {}
+}

java/java-tests/testSrc/com/intellij/codeInspection/DataFlowInspectionTest.java

@@ -303,6 +303,16 @@ public class DataFlowInspectionTest extends LightCodeInsightFixtureTestCase {
   
   public void testNotEqualsTypo() { doTest(); }
   public void testAndEquals() { doTest(); }
+
+  public void testParametersAreNonnullByDefault() {
+    myFixture.addClass("package javax.annotation; public @interface ParametersAreNonnullByDefault {}");
+    myFixture.addClass("package javax.annotation; public @interface ParametersAreNullableByDefault {}");
+    
+    myFixture.addClass("package foo; public class AnotherPackageNotNull { public static void foo(String s) {}}");
+    myFixture.addFileToProject("foo/package-info.java", "@javax.annotation.ParametersAreNonnullByDefault package foo;");
+    
+    doTest(); 
+  }
   
   public void _testNullCheckBeforeInstanceof() { doTest(); } // http://youtrack.jetbrains.com/issue/IDEA-113220
 }