chore: Add unit test for additional branches

src/test/java/com/endava/cats/args/FilesArgumentsTest.java

@@ -215,6 +215,7 @@ void shouldLoadPathsOrder() throws Exception {
     void shouldLoadMutators() throws Exception {
         FilesArguments filesArguments = new FilesArguments();
         filesArguments.setMutatorsFolder(new File("src/test/resources/mutators"));
+        filesArguments.loadMutators();
 
         org.assertj.core.api.Assertions.assertThat(filesArguments.getMutatorsFolder()).isDirectory();
     }

src/test/java/com/endava/cats/factory/FuzzingDataFactoryTest.java

@@ -746,7 +746,7 @@ void shouldRecordErrorWhenParamRefDoesNotExist() throws Exception {
     }
 
     @Test
-    void shouldExtractMultiLevelExamples() throws Exception {
+    void shouldExtractMultiLevelExamples() {
         ObjectMapper objectMapper = new ObjectMapper();
         ObjectNode exampleMapObject = objectMapper.createObjectNode();
         exampleMapObject.set("WORKER_COMPENSATION_PAYRATE_POST_PATCH", objectMapper.createObjectNode().put("value", "catsIsCool"));

src/test/java/com/endava/cats/util/CatsModeLUtilsTest.java

@@ -0,0 +1,22 @@
+package com.endava.cats.util;
+
+import io.quarkus.test.junit.QuarkusTest;
+import org.assertj.core.api.Assertions;
+import org.junit.jupiter.params.ParameterizedTest;
+import org.junit.jupiter.params.provider.CsvSource;
+
+@QuarkusTest
+class CatsModeLUtilsTest {
+
+    @ParameterizedTest
+    @CsvSource(value = {
+            "#/components/schemas/SomeSchema, SomeSchema",
+            "#/components/schemas/AnotherSchema, AnotherSchema",
+            "#/components/schemas/YetAnotherSchema, YetAnotherSchema",
+            "null,null", "#/paths/path1,#/paths/path1"}, nullValues = "null")
+    void shouldReturnSimpleReference(String ref, String expected) {
+        String result = CatsModelUtils.getSimpleRef(ref);
+
+        Assertions.assertThat(result).isEqualTo(expected);
+    }
+}