Add negative tests for custom root dir

Author: lhcopetti

src/test/java/org/wiremock/integrations/testcontainers/WireMockContainerRootDirTest.java

@@ -34,7 +34,7 @@ class WireMockContainerRootDirTest {
             .withRootDir(new File("src/test/resources/root-dir"));
 
     @Test
-    void testThatLoadMappingFromRootDirectory() throws Exception {
+    void testThatLoadsMappingFromRootDirectory() throws Exception {
         // given
         String url = wiremockServer.getUrl("hello/root/dir");
 
@@ -48,7 +48,7 @@ void testThatLoadMappingFromRootDirectory() throws Exception {
     }
 
     @Test
-    void testThatLoadMappingFromNestedRootDirectory() throws Exception {
+    void testThatLoadsMappingFromNestedRootDirectory() throws Exception {
         // given
         String url = wiremockServer.getUrl("hello/nested/root/dir");