dfa: inspect enum constant methods (IDEA-142299)

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

@@ -0,0 +1,37 @@
+package foo;
+
+import javax.annotation.*;
+
+enum TestNonnull {
+  TEST {
+    @Nonnull
+    @Override
+    public Object testWithAnnotation(@Nonnull Object aObject) {
+      if (<warning descr="Condition 'aObject == null' is always 'false'">aObject == null</warning>) {
+        return new Object();
+      }
+      return <warning descr="'null' is returned by the method declared as @NotNull">null</warning>;
+    }
+
+    @Override
+    public Object testWithoutAnnotation(Object aObject) {
+      return <warning descr="'null' is returned by the method declared as @NotNull">null</warning>;
+    }
+  };
+
+  public boolean testParameter(TestNonnull aTest) {
+    if (<warning descr="Condition 'aTest == null' is always 'false'">aTest == null</warning>) {
+      return true;
+    }
+    return false;
+  }
+
+  public Object testReturn() {
+    return <warning descr="'null' is returned by the method declared as @NotNull">null</warning>;
+  }
+
+  @Nonnull
+  public abstract Object testWithAnnotation(@Nonnull Object aObject);
+
+  public abstract Object testWithoutAnnotation(Object aObject);
+}