Fix JUnit assertion argument order before AssertJ migration

Fixes #492

Author: timtebeek

src/main/resources/META-INF/rewrite/assertj.yml

@@ -346,6 +346,8 @@ tags:
   - testing
   - assertj
 recipeList:
+  # First improve the assertions for JUnit, to fix inverted expected/actual values
+  - org.openrewrite.java.testing.junit5.CleanupAssertions
   - org.openrewrite.java.testing.assertj.JUnitAssertArrayEqualsToAssertThat
   - org.openrewrite.java.testing.assertj.JUnitAssertEqualsToAssertThat
   - org.openrewrite.java.testing.assertj.JUnitAssertFalseToAssertThat

src/test/java/org/openrewrite/java/testing/junit5/CleanupAssertionsTest.java

@@ -32,10 +32,7 @@ class CleanupAssertionsTest implements RewriteTest {
     public void defaults(RecipeSpec spec) {
         spec
           .parser(JavaParser.fromJavaVersion().classpathFromResources(new InMemoryExecutionContext(), "junit-jupiter-api-5.9"))
-          .recipe(Environment.builder()
-            .scanRuntimeClasspath("org.openrewrite.java.testing.junit5")
-            .build()
-            .activateRecipes("org.openrewrite.java.testing.junit5.CleanupAssertions"));
+          .recipeFromResources("org.openrewrite.java.testing.junit5.CleanupAssertions");
     }
 
     @DocumentExample
@@ -130,4 +127,43 @@ void test() {
           )
         );
     }
+
+    @Test
+    void assertNotEqualsInverted() {
+        //language=java
+        rewriteRun(
+          java(
+            """
+                    import org.junit.jupiter.api.Assertions;
+                    import org.junit.jupiter.api.Test;
+                                              
+                    class A {
+                        class B {}
+
+                        @Test
+                        public void FlippedParams(){
+                            B myVariable = new B();
+
+                            Assertions.assertNotEquals(myVariable, null);
+                        }
+                    }
+                    """,
+            """
+                    import org.junit.jupiter.api.Assertions;
+                    import org.junit.jupiter.api.Test;
+                                              
+                    class A {
+                        class B {}
+
+                        @Test
+                        public void FlippedParams(){
+                            B myVariable = new B();
+
+                            Assertions.assertNotEquals(null, myVariable);
+                        }
+                    }
+                    """
+          )
+        );
+    }
 }