fix @NotNull instrumentation for enum constructor parameters with ASM 3.3 (IDEA-56943); move NotNullVerifyingInstrumenterTest to java-tests

java/java-tests/testData/compiler/notNullVerification/EnumConstructor.java

@@ -0,0 +1,11 @@
+import org.jetbrains.annotations.NotNull;
+
+public enum EnumConstructor {
+    Value("label");
+
+    private final String label;
+
+    EnumConstructor(@NotNull String label) {
+        this.label = label;
+    }
+}

java/java-tests/testData/compiler/notNullVerification/MultipleReturns.java

@@ -0,0 +1,9 @@
+import org.jetbrains.annotations.NotNull;
+
+public class MultipleReturns {
+  @NotNull public Object test(int i) {
+    if (i == 0) return null;
+    if (i == 1) return null;
+    return null;
+  }
+}

java/java-tests/testData/compiler/notNullVerification/SimpleReturn.java

@@ -0,0 +1,7 @@
+import org.jetbrains.annotations.NotNull;
+
+public class SimpleReturn {
+  @NotNull public Object test() {
+    return null;
+  }
+}