fix: failing unit test and detekt failure

Author: avi-alpert

plugins/amazonq/shared/jetbrains-community/src/software/aws/toolkits/jetbrains/services/amazonq/lsp/textdocument/TextDocumentServiceHandler.kt

@@ -10,9 +10,11 @@ import com.intellij.openapi.editor.event.DocumentEvent
 import com.intellij.openapi.editor.event.DocumentListener
 import com.intellij.openapi.fileEditor.FileDocumentManager
 import com.intellij.openapi.fileEditor.FileDocumentManagerListener
+import com.intellij.openapi.fileEditor.FileEditor
 import com.intellij.openapi.fileEditor.FileEditorManager
 import com.intellij.openapi.fileEditor.FileEditorManagerEvent
 import com.intellij.openapi.fileEditor.FileEditorManagerListener
+import com.intellij.openapi.fileEditor.TextEditor
 import com.intellij.openapi.project.Project
 import com.intellij.openapi.util.Key
 import com.intellij.openapi.vfs.VirtualFile
@@ -170,11 +172,12 @@ class TextDocumentServiceHandler(
     }
 
     override fun selectionChanged(event: FileEditorManagerEvent) {
-        handleActiveEditorChange(event.newEditor?.let { FileEditorManager.getInstance(project).selectedTextEditor })
+        handleActiveEditorChange(event.newEditor)
     }
 
-    private fun handleActiveEditorChange(editor: com.intellij.openapi.editor.Editor?) {
-        val editor = FileEditorManager.getInstance(project).selectedTextEditor
+    private fun handleActiveEditorChange(fileEditor: FileEditor?) {
+        // Extract text editor if it's a TextEditor, otherwise null
+        val editor = (fileEditor as? TextEditor)?.editor
         val textDocumentIdentifier = editor?.let { TextDocumentIdentifier(toUriString(it.virtualFile)) }
         val cursorState = editor?.let { getCursorState(it) }
 

plugins/amazonq/shared/jetbrains-community/tst/software/aws/toolkits/jetbrains/services/amazonq/lsp/AmazonQLanguageClientImplTest.kt

@@ -33,6 +33,7 @@ import software.aws.toolkits.core.utils.test.aString
 import software.aws.toolkits.jetbrains.core.credentials.AwsBearerTokenConnection
 import software.aws.toolkits.jetbrains.core.credentials.ToolkitConnectionManager
 import software.aws.toolkits.jetbrains.core.credentials.pinning.QConnection
+import software.aws.toolkits.jetbrains.services.amazonq.lsp.flareChat.ChatCommunicationManager
 import software.aws.toolkits.jetbrains.services.amazonq.lsp.model.aws.credentials.ConnectionMetadata
 import software.aws.toolkits.jetbrains.services.amazonq.lsp.model.aws.credentials.SsoProfileData
 import software.aws.toolkits.jetbrains.services.codewhisperer.customization.CodeWhispererCustomization
@@ -47,7 +48,14 @@ import kotlin.random.nextInt
 @ExtendWith(ApplicationExtension::class)
 class AmazonQLanguageClientImplTest {
     private val project: Project = mockk(relaxed = true)
-    private val sut = AmazonQLanguageClientImpl(project)
+    private val mockChatManager = mockk<ChatCommunicationManager>(relaxed = true)
+    private val sut: AmazonQLanguageClientImpl
+
+    init {
+        // Mock the ChatCommunicationManager service
+        every { project.service<ChatCommunicationManager>() } returns mockChatManager
+        sut = AmazonQLanguageClientImpl(project)
+    }
 
     @Test
     fun `telemetryEvent handles basic event with name and data`() {