fix: handle ApplicationManager null in test environments

- Add null check in AutoDevSettingsState.getInstance() to return default instance when ApplicationManager is not available
- Add try-catch blocks in AutoDevAppScope.scope() and workerScope() with fallback CoroutineScope instances
- Remove @ignore annotation from LLMProvider2Test.shouldWorkWithJson as the test now passes
- Fixes 'Cannot invoke Application.getService() because ApplicationManager.getApplication() is null' error in unit tests

Author: iptton

core/src/main/kotlin/cc/unitmesh/devti/settings/AutoDevSettingsState.kt

@@ -65,7 +65,13 @@ class AutoDevSettingsState : PersistentStateComponent<AutoDevSettingsState> {
         val language: String get() = getInstance().fetchLocalLanguage()
 
         fun getInstance(): AutoDevSettingsState {
-            return ApplicationManager.getApplication().getService(AutoDevSettingsState::class.java).state
+            val application = ApplicationManager.getApplication()
+            return if (application != null) {
+                application.getService(AutoDevSettingsState::class.java).state
+            } else {
+                // Return a default instance for testing environments where ApplicationManager is not available
+                AutoDevSettingsState()
+            }
         }
     }
 }

core/src/main/kotlin/cc/unitmesh/devti/util/AutoDevCoroutineScope.kt

@@ -24,8 +24,25 @@ class AutoDevAppScope: Disposable {
     }
 
     companion object {
-        fun scope(): CoroutineScope = service<AutoDevAppScope>().coroutineScope
-        fun workerScope(): CoroutineScope = service<AutoDevAppScope>().workerScope
+        fun scope(): CoroutineScope {
+            return try {
+                service<AutoDevAppScope>().coroutineScope
+            } catch (e: Exception) {
+                // Fallback for testing environments where ApplicationManager is not available
+                CoroutineScope(SupervisorJob() + CoroutineExceptionHandler { _, throwable ->
+                    logger<AutoDevAppScope>().error(throwable)
+                })
+            }
+        }
+
+        fun workerScope(): CoroutineScope {
+            return try {
+                service<AutoDevAppScope>().workerScope
+            } catch (e: Exception) {
+                // Fallback for testing environments where ApplicationManager is not available
+                CoroutineScope(SupervisorJob() + workerThread)
+            }
+        }
     }
 }
 

core/src/test/kotlin/cc/unitmesh/devti/llm2/LLMProvider2Test.kt

@@ -39,7 +39,6 @@ class LLMProvider2Test {
         mockWebServer.shutdown()
     }
 
-    @Ignore("Cannot invoke \"com.intellij.openapi.application.Application.getService(java.lang.Class)\" because the return value of \"com.intellij.openapi.application.ApplicationManager.getApplication()\" is null")
     @Test
     fun shouldWorkWithJson() = runBlocking {
         val mockResponse = MockResponse()