Add test to ensure all Rules are registered

Author: jycr

pom.xml

@@ -136,6 +136,12 @@
             <scope>test</scope>
         </dependency>
 
+        <dependency>
+            <groupId>org.reflections</groupId>
+            <artifactId>reflections</artifactId>
+            <version>0.10.2</version>
+            <scope>test</scope>
+        </dependency>
     </dependencies>
 
     <build>

src/main/java/fr/greencodeinitiative/java/JavaCheckRegistrar.java

@@ -47,7 +47,7 @@
  */
 @SonarLintSide
 public class JavaCheckRegistrar implements CheckRegistrar {
-    private static final List<Class<? extends JavaCheck>> ANNOTATED_RULE_CLASSES = List.of(
+    static final List<Class<? extends JavaCheck>> ANNOTATED_RULE_CLASSES = List.of(
             ArrayCopyCheck.class,
             IncrementCheck.class,
             AvoidUsageOfStaticCollections.class,

src/test/java/fr/greencodeinitiative/java/JavaCheckRegistrarTest.java

@@ -17,7 +17,11 @@
  */
 package fr.greencodeinitiative.java;
 
+import java.util.Set;
+
 import org.junit.jupiter.api.Test;
+import org.reflections.Reflections;
+import org.sonar.check.Rule;
 import org.sonar.plugins.java.api.CheckRegistrar;
 
 import static org.assertj.core.api.Assertions.assertThat;
@@ -30,10 +34,14 @@ void checkNumberRules() {
 
         final JavaCheckRegistrar registrar = new JavaCheckRegistrar();
         registrar.register(context);
-
-        assertThat(context.checkClasses()).hasSize(15);
+        assertThat(context.checkClasses())
+                .describedAs("All implemented rules must be registered into " + JavaCheckRegistrar.class)
+                .containsExactlyInAnyOrder(getDefinedRules().toArray(new Class[0]));
         assertThat(context.testCheckClasses()).isEmpty();
-
     }
 
+    static Set<Class<?>> getDefinedRules() {
+        Reflections r = new Reflections(JavaCheckRegistrar.class.getPackageName() + ".checks");
+        return r.getTypesAnnotatedWith(Rule.class);
+    }
 }

src/test/java/fr/greencodeinitiative/java/JavaRulesDefinitionTest.java

@@ -28,6 +28,7 @@
 import org.sonar.api.server.rule.RulesDefinition.Rule;
 import org.sonar.api.utils.Version;
 
+import static fr.greencodeinitiative.java.JavaCheckRegistrar.ANNOTATED_RULE_CLASSES;
 import static org.assertj.core.api.Assertions.assertThat;
 import static org.mockito.Mockito.doReturn;
 import static org.mockito.Mockito.mock;
@@ -36,8 +37,6 @@ class JavaRulesDefinitionTest {
 
     private RulesDefinition.Repository repository;
 
-    private int rulesSize;
-
     @BeforeEach
     void init() {
         final SonarRuntime sonarRuntime = mock(SonarRuntime.class);
@@ -46,7 +45,6 @@ void init() {
         RulesDefinition.Context context = new RulesDefinition.Context();
         rulesDefinition.define(context);
         repository = context.repository(rulesDefinition.repositoryKey());
-        rulesSize = 15;
     }
 
     @Test
@@ -55,12 +53,11 @@ void testMetadata() {
         assertThat(repository.name()).isEqualTo("ecoCode");
         assertThat(repository.language()).isEqualTo("java");
         assertThat(repository.key()).isEqualTo("ecocode-java");
-        assertThat(repository.rules()).hasSize(rulesSize);
     }
 
     @Test
     void testRegistredRules() {
-        assertThat(repository.rules()).hasSize(rulesSize);
+        assertThat(repository.rules()).hasSize(ANNOTATED_RULE_CLASSES.size());
     }
 
     @Test