Use label.Path instead of Name

test/fakeapi/controller_control.go

@@ -83,6 +83,9 @@ func (ctl *Controller) AddUserLabel(username string, label *pmapi.Label) error {
 	}
 	label.ID = ctl.labelIDGenerator.next(prefix)
 	label.Name = labelName
+	if label.Path == "" {
+		label.Path = label.Name
+	}
 	ctl.labelsByUsername[username] = append(ctl.labelsByUsername[username], label)
 	ctl.resetUsers()
 	return nil

test/fakeapi/labels.go

@@ -53,6 +53,9 @@ func (api *FakePMAPI) CreateLabel(label *pmapi.Label) (*pmapi.Label, error) {
 		prefix = "folder"
 	}
 	label.ID = api.controller.labelIDGenerator.next(prefix)
+	if label.Path == "" {
+		label.Path = label.Name
+	}
 	api.labels = append(api.labels, label)
 	api.addEventLabel(pmapi.EventCreate, label)
 	return label, nil
@@ -67,6 +70,9 @@ func (api *FakePMAPI) UpdateLabel(label *pmapi.Label) (*pmapi.Label, error) {
 			// Request doesn't have to include all properties and these have to stay the same.
 			label.Type = existingLabel.Type
 			label.Exclusive = existingLabel.Exclusive
+			if label.Path == "" {
+				label.Path = label.Name
+			}
 			api.labels[idx] = label
 			api.addEventLabel(pmapi.EventUpdate, label)
 			return label, nil

test/features/bridge/imap/mailbox/list.feature

@@ -1,11 +1,11 @@
 Feature: IMAP list mailboxes
   Background:
     Given there is connected user "user"
-    And there is "user" with mailbox "Folders/mbox1"
-    And there is "user" with mailbox "Labels/mbox2"
-    And there is IMAP client logged in as "user"
 
   Scenario: List mailboxes
+    Given there is "user" with mailbox "Folders/mbox1"
+    And there is "user" with mailbox "Labels/mbox2"
+    And there is IMAP client logged in as "user"
     When IMAP client lists mailboxes
     Then IMAP response contains "INBOX"
     Then IMAP response contains "Sent"
@@ -14,3 +14,16 @@ Feature: IMAP list mailboxes
     Then IMAP response contains "All Mail"
     Then IMAP response contains "Folders/mbox1"
     Then IMAP response contains "Labels/mbox2"
+
+  @ignore-live
+  Scenario: List mailboxes with subfolders
+    # Escaped slash in the name contains slash in the name.
+    # Not-escaped slash in the name means tree structure.
+    # We keep escaping in an IMAP communication so each mailbox is unique and
+    # both mailboxes are accessible. The slash is visible in the IMAP client.
+    Given there is "user" with mailbox "Folders/a\/b"
+    And there is "user" with mailbox "Folders/a/b"
+    And there is IMAP client logged in as "user"
+    When IMAP client lists mailboxes
+    Then IMAP response contains "Folders/a\/b"
+    Then IMAP response contains "Folders/a/b"