#28: Increment coverage of affected classes

src/test/java/com/marcnuri/mnimapsync/index/StoreCrawlerText.java

@@ -24,6 +24,8 @@
 import static org.hamcrest.MatcherAssert.assertThat;
 import static org.hamcrest.Matchers.empty;
 import static org.hamcrest.Matchers.equalTo;
+import static org.junit.jupiter.api.Assertions.assertThrows;
+import static org.junit.jupiter.api.Assertions.fail;
 import static org.mockito.ArgumentMatchers.anyInt;
 import static org.mockito.ArgumentMatchers.anyString;
 import static org.mockito.Mockito.doAnswer;
@@ -68,7 +70,7 @@ void tearDown() {
   }
 
   @Test
-  void populateFromStore_storeHasFolders_ShouldPopulateIndex() throws Exception {
+  void populateFromStore_storeHasFolders_shouldPopulateIndex() throws Exception {
     // Given
     final Index index = new Index();
     doReturn(1).when(defaultFolder).getMessageCount();
@@ -83,6 +85,26 @@ void populateFromStore_storeHasFolders_ShouldPopulateIndex() throws Exception {
     assertThat(index.hasCrawlException(), equalTo(false));
   }
 
+  @Test
+  void populateFromStore_indexHasExceptionsAndStoreHasFolders_shouldThrowException() throws Exception {
+    // Given
+    final Index index = new Index();
+    index.addCrawlException(new MessagingException("Indexing tasks went wrong at some point"));
+    doReturn(1).when(defaultFolder).getMessageCount();
+    // When
+    final MessagingException result = assertThrows(MessagingException.class, () -> {
+      populateFromStore(index, imapStore, 1);
+      fail();
+    });
+    // Then
+    verify(defaultFolder, times(1)).expunge();
+    assertThat(index.containsFolder("INBOX"), equalTo(true));
+    assertThat(index.containsFolder("Folder 1"), equalTo(true));
+    assertThat(index.containsFolder("Folder 2"), equalTo(true));
+    assertThat(index.hasCrawlException(), equalTo(true));
+    assertThat(result.getMessage(), equalTo("Indexing tasks went wrong at some point"));
+  }
+
   private static IMAPFolder mockFolder(String name) throws MessagingException {
     final IMAPFolder mockFolder = Mockito.mock(IMAPFolder.class);
     doReturn(name).when(mockFolder).getFullName();