[Chat] Implement Unit Tests

[EhsanEhrari]

1. Chat Read Status Component:

• [x] should set unreadIndicator to * if any chat is unread
• [x] should set unreadIndicator to blank if all chats are read
• [x] should set unreadIndicator to ? if chat status is unknown
• [x] should set unreadIndicator to * if observable emits false
• [x] should set unreadIndicator to blank if observable emits true
• [x] should set unreadIndicator to ? if observable emits an error
• [x] should display notification-dot class when unreadIndicator is *
• [x] should display unreadIndicator value when unreadIndicator is ?

2. Chats Component:

• [x] should render loading spinner when loading is true
• [x] should render error message when error is present
• [x] should render chats when chats are provided
• [x] should emit chatSelection event when a chat is selected
• [x] should select the first chat as current when chats are provided

3. Chat With Posts Component

• [x] should render "Select a chat" message when no chat is selected
• [x] should render selected chat name when a chat is selected
• [x] should render error message when error is present
• [x] should emit chatSelection event when a chat is selected
• [x] should call chatService.markChatAsRead when a chat is marked as read
• [x] should return true from canToggleSizes method when minSidePanelWidth and maxSidePanelWidth are different
• [x] should return false from canToggleSizes method when minSidePanelWidth and maxSidePanelWidth are the same

4. Create Update Post Component:

• [x] should initialize postForm with content control
• [x] should be invalid if content is empty
• [x] should be valid if content is not empty
• [x] should send a post
• [x] should upload a file
• [x] should handle emoji selection
• [x] should toggle emoji picker

5. Manage Chats Component:

• [x] should load chats on init
• [x] should handle error on loading chats
• [x] should create a new chat
• [x] should handle error on creating a new chat
• [x] should set selected chat on chat selection

6. View Chat Component:

• [x] should display chat name if available
• [x] should display chat id if name is not available
• [x] should display chat-read-status component with correct input
• [x] should have a working displayName getter

7. View Chat Posts Component:

• [x] should initialize correctly
• [x] should handle chat input changes and call onNewChat
• [x] should fetch job chat if chat input does not change
• [x] should call markChatAsRead on chatService when onMarkChatAsRead is called
• [x] should close post reaction picker if click is on emoji picker button
• [x] should handle no emoji pickers open correctly

8. View Posts Component:

• [x] should toggle reaction picker visibility and set position on reaction button click
• [x] should handle emoji selection and update reactions
• [x] should update reaction when a reaction button is clicked
• [x] should close reaction picker when current post changes
• [x] should render post content as HTML or text based on isHtml function
• [x] should return correct createdBy string

9. Help Component:

• [x] should fetch help links on button click
• [x] should display error if fetching help links fails
• [x] should display help links in tooltip content

[EhsanEhrari]

@cazcam34 CreateUpdateChatComponent inside Chat folder is another zombie component.