🧪 Test: Add coverage for loadTemplates in MockingTemplateLoader

Added explicitly missing tests for `loadTemplates()` in `MockingTemplateLoaderTest.java`:
- Test that the template store is cleared before loading.
- Test loading templates from both the bundle and workspace state locations simultaneously.
- Increased test specificity for when no valid template definitions are found.

Co-authored-by: RoiSoleil <3462260+RoiSoleil@users.noreply.github.com>

Author: google-labs-jules[bot]

org.moreunit.mock.test/test/org/moreunit/mock/templates/MockingTemplateLoaderTest.java

@@ -44,18 +44,60 @@ public class MockingTemplateLoaderTest
     MockingTemplateException someException = new MockingTemplateException("test exception");
     MockingTemplates someTemplates = someTemplates();
 
+    @Test
+    public void should_clear_template_store_before_loading() throws Exception
+    {
+        // given
+        when(resourceLoader.findBundleResources(anyString(), anyString())).thenReturn(noResources);
+        when(resourceLoader.findWorkspaceStateResources(anyString(), anyString())).thenReturn(noResources);
+
+        // when
+        loader.loadTemplates();
+
+        // then
+        verify(templateStore).clear();
+    }
+
+    @Test
+    public void should_load_from_both_bundle_and_workspace_state() throws Exception
+    {
+        // given
+        URL bundleUrl = URI.create("file:/bundle.url").toURL();
+        URL workspaceUrl = URI.create("file:/workspace.url").toURL();
+
+        when(resourceLoader.findBundleResources(eq(TEMPLATE_DIRECTORY), anyString())).thenReturn(singleton(bundleUrl));
+        when(resourceLoader.findWorkspaceStateResources(eq(TEMPLATE_DIRECTORY), anyString())).thenReturn(singleton(workspaceUrl));
+
+        MockingTemplates bundleTemplates = someTemplates();
+        MockingTemplates workspaceTemplates = someTemplates();
+
+        when(templateDefinitionReader.read(bundleUrl)).thenReturn(bundleTemplates);
+        when(templateDefinitionReader.read(workspaceUrl)).thenReturn(workspaceTemplates);
+
+        // when
+        LoadingResult result = loader.loadTemplates();
+
+        // then
+        verify(templateStore).store(bundleTemplates);
+        verify(templateStore).store(workspaceTemplates);
+
+        assertThat(result.invalidTemplatesFound()).isFalse();
+        assertThat(result.invalidTemplates()).isEmpty();
+    }
+
     @Test
     public void should_log_error_when_template_definition_resource_is_not_found() throws Exception
     {
         // given
         when(resourceLoader.findBundleResources(anyString(), anyString())).thenReturn(noResources);
         when(resourceLoader.findWorkspaceStateResources(anyString(), anyString())).thenReturn(noResources);
+        when(templateStore.getCategories()).thenReturn(new ArrayList<Category>());
 
         // when
         loader.loadTemplates();
 
         // then
-        verify(logger, atLeastOnce()).error(anyString());
+        verify(logger).error("Failed to find valid templates.");
     }
 
     @Test