Fix import tests and improve plugin loading

TablePro/AppDelegate.swift

@@ -612,8 +612,8 @@ class AppDelegate: NSObject, NSApplicationDelegate {
         // Enable native macOS window tabbing (Finder/Safari-style tabs)
         NSWindow.allowsAutomaticWindowTabbing = true
 
-        // Load plugins (driver plugins, etc.) before any connections are created
-        PluginManager.shared.loadAllPlugins()
+        // Discover and load plugins (discovery is synchronous, bundle loading is deferred)
+        PluginManager.shared.loadPlugins()
 
         // Start license periodic validation
         Task { @MainActor in

TablePro/Core/Plugins/PluginManager.swift

@@ -45,7 +45,16 @@ final class PluginManager {
 
     // MARK: - Loading
 
-    func loadAllPlugins() {
+    /// Discover and load all plugins. Discovery is synchronous (reads Info.plist),
+    /// then bundle loading is deferred to the next run loop iteration so it doesn't block app launch.
+    func loadPlugins() {
+        discoverAllPlugins()
+        Task { @MainActor in
+            self.loadPendingPlugins()
+        }
+    }
+
+    private func discoverAllPlugins() {
         let fm = FileManager.default
         if !fm.fileExists(atPath: userPluginsDir.path) {
             do {
@@ -65,7 +74,7 @@ final class PluginManager {
     }
 
     /// Load all discovered but not-yet-loaded plugin bundles.
-    /// Called on first driver request or when the plugins settings screen opens.
+    /// Safety fallback for code paths that need plugins before the deferred Task completes.
     func loadPendingPlugins() {
         guard !pendingPluginURLs.isEmpty else { return }
         let pending = pendingPluginURLs
@@ -285,6 +294,7 @@ final class PluginManager {
     // MARK: - Driver Availability
 
     func isDriverAvailable(for databaseType: DatabaseType) -> Bool {
+        // Safety fallback: loads pending plugins if the deferred startup Task hasn't completed yet
         loadPendingPlugins()
         return driverPlugins[databaseType.pluginTypeId] != nil
     }

TablePro/Resources/Localizable.xcstrings

@@ -3749,6 +3749,16 @@
         }
       }
     },
+    "Connection Test Failed" : {
+      "localizations" : {
+        "vi" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "Kiểm tra kết nối thất bại"
+          }
+        }
+      }
+    },
     "Connection URL" : {
       "localizations" : {
         "vi" : {

TablePro/Views/Connection/ConnectionFormView.swift

@@ -85,11 +85,11 @@ struct ConnectionFormView: View {
     @State private var startupCommands: String = ""
 
     @State private var isTesting: Bool = false
-    @State private var testResult: TestResult?
+    @State private var testSucceeded: Bool = false
 
     @State private var isInstallingPlugin = false
     @State private var pluginInstallProgress: Double = 0
-    @State private var showPluginInstallError: String?
+
     @State private var pluginInstallConnection: DatabaseConnection?
 
     // Tab selection
@@ -100,11 +100,6 @@ struct ConnectionFormView: View {
 
     // MARK: - Enums
 
-    enum TestResult {
-        case success
-        case failure(String)
-    }
-
     private enum FormTab: String, CaseIterable {
         case general = "General"
         case ssh = "SSH Tunnel"
@@ -139,7 +134,6 @@ struct ConnectionFormView: View {
             isNew ? String(localized: "New Connection") : String(localized: "Edit Connection")
         )
         .onAppear {
-            PluginManager.shared.loadPendingPlugins()
             loadConnectionData()
             loadSSHConfig()
         }
@@ -680,32 +674,6 @@ struct ConnectionFormView: View {
                 .padding(.top, 8)
             }
 
-            if case .failure(let message) = testResult {
-                HStack(alignment: .top, spacing: 6) {
-                    Image(systemName: "exclamationmark.triangle.fill")
-                        .foregroundStyle(.red)
-                    Text(message)
-                        .font(.caption)
-                        .foregroundStyle(.red)
-                        .fixedSize(horizontal: false, vertical: true)
-                }
-                .padding(.horizontal, 16)
-                .padding(.top, 8)
-            }
-
-            if let pluginError = showPluginInstallError {
-                HStack(alignment: .top, spacing: 6) {
-                    Image(systemName: "exclamationmark.triangle.fill")
-                        .foregroundStyle(.red)
-                    Text(pluginError)
-                        .font(.caption)
-                        .foregroundStyle(.red)
-                        .fixedSize(horizontal: false, vertical: true)
-                }
-                .padding(.horizontal, 16)
-                .padding(.top, 8)
-            }
-
             HStack {
                 // Test connection
                 Button(action: testConnection) {
@@ -714,8 +682,8 @@ struct ConnectionFormView: View {
                             ProgressView()
                                 .controlSize(.small)
                         } else {
-                            Image(systemName: testResultIcon)
-                                .foregroundStyle(testResultColor)
+                            Image(systemName: testSucceeded ? "checkmark.circle.fill" : "bolt.horizontal")
+                                .foregroundStyle(testSucceeded ? .green : .secondary)
                         }
                         Text("Test Connection")
                     }
@@ -783,26 +751,10 @@ struct ConnectionFormView: View {
         return basicValid
     }
 
-    private var testResultIcon: String {
-        switch testResult {
-        case .success: return "checkmark.circle.fill"
-        case .failure: return "xmark.circle.fill"
-        case .none: return "bolt.horizontal"
-        }
-    }
-
-    private var testResultColor: Color {
-        switch testResult {
-        case .success: return .green
-        case .failure: return .red
-        case .none: return .secondary
-        }
-    }
-
     private func installPluginForType(_ databaseType: DatabaseType) {
         isInstallingPlugin = true
         pluginInstallProgress = 0
-        showPluginInstallError = nil
+        let window = NSApp.keyWindow
 
         Task {
             do {
@@ -812,7 +764,11 @@ struct ConnectionFormView: View {
                 isInstallingPlugin = false
             } catch {
                 isInstallingPlugin = false
-                showPluginInstallError = error.localizedDescription
+                AlertHelper.showErrorSheet(
+                    title: String(localized: "Plugin Installation Failed"),
+                    message: error.localizedDescription,
+                    window: window
+                )
             }
         }
     }
@@ -1012,7 +968,8 @@ struct ConnectionFormView: View {
 
     func testConnection() {
         isTesting = true
-        testResult = nil
+        testSucceeded = false
+        let window = NSApp.keyWindow
 
         // Build SSH config
         let sshConfig = SSHConfiguration(
@@ -1080,13 +1037,24 @@ struct ConnectionFormView: View {
                     testConn, sshPassword: sshPassword)
                 await MainActor.run {
                     isTesting = false
-                    testResult =
-                        success ? .success : .failure(String(localized: "Connection test failed"))
+                    if success {
+                        testSucceeded = true
+                    } else {
+                        AlertHelper.showErrorSheet(
+                            title: String(localized: "Connection Test Failed"),
+                            message: String(localized: "Connection test failed"),
+                            window: window
+                        )
+                    }
                 }
             } catch {
                 await MainActor.run {
                     isTesting = false
-                    testResult = .failure(error.localizedDescription)
+                    AlertHelper.showErrorSheet(
+                        title: String(localized: "Connection Test Failed"),
+                        message: error.localizedDescription,
+                        window: window
+                    )
                 }
             }
         }

TablePro/Views/Export/ExportDialog.swift

@@ -63,7 +63,6 @@ struct ExportDialog: View {
         .frame(width: dialogWidth)
         .background(Color(nsColor: .windowBackgroundColor))
         .onAppear {
-            PluginManager.shared.loadPendingPlugins()
             let available = availableFormats
             if !available.contains(where: { type(of: $0).formatId == config.formatId }) {
                 if let first = available.first {

TablePro/Views/Import/ImportDialog.swift

@@ -67,7 +67,6 @@ struct ImportDialog: View {
         }
         .background(Color(nsColor: .windowBackgroundColor))
         .onAppear {
-            PluginManager.shared.loadPendingPlugins()
             let available = availableFormats
             if !available.contains(where: { type(of: $0).formatId == selectedFormatId }) {
                 if let first = available.first {

TablePro/Views/Settings/Plugins/InstalledPluginsView.swift

@@ -81,9 +81,6 @@ struct InstalledPluginsView: View {
             }
             return true
         }
-        .onAppear {
-            pluginManager.loadPendingPlugins()
-        }
         .alert(errorAlertTitle, isPresented: $showErrorAlert) {
             Button("OK") {}
         } message: {

TableProTests/Core/Services/ImportStateTests.swift

@@ -16,9 +16,8 @@ struct ImportStateTests {
         let state = ImportState()
         #expect(state.isImporting == false)
         #expect(state.progress == 0.0)
-        #expect(state.currentStatement == "")
-        #expect(state.currentStatementIndex == 0)
-        #expect(state.totalStatements == 0)
+        #expect(state.processedStatements == 0)
+        #expect(state.estimatedTotalStatements == 0)
         #expect(state.statusMessage == "")
         #expect(state.errorMessage == nil)
     }
@@ -46,7 +45,7 @@ struct ImportStateTests {
 
         #expect(state.isImporting == true)
         #expect(state.progress == 0.0)
-        #expect(state.currentStatement == "")
+        #expect(state.processedStatements == 0)
         #expect(state.errorMessage == nil)
     }
 
@@ -60,14 +59,11 @@ struct ImportStateTests {
         state.progress = 0.75
         #expect(state.progress == 0.75)
 
-        state.currentStatement = "CREATE TABLE test"
-        #expect(state.currentStatement == "CREATE TABLE test")
+        state.processedStatements = 5
+        #expect(state.processedStatements == 5)
 
-        state.currentStatementIndex = 5
-        #expect(state.currentStatementIndex == 5)
-
-        state.totalStatements = 20
-        #expect(state.totalStatements == 20)
+        state.estimatedTotalStatements = 20
+        #expect(state.estimatedTotalStatements == 20)
 
         state.statusMessage = "Importing..."
         #expect(state.statusMessage == "Importing...")

TableProTests/Views/Import/ImportServiceStateTests.swift

@@ -20,9 +20,8 @@ struct ImportServiceStateTests {
 
         #expect(state.service == nil)
         #expect(state.isImporting == false)
-        #expect(state.currentStatement == "")
-        #expect(state.currentStatementIndex == 0)
-        #expect(state.totalStatements == 0)
+        #expect(state.processedStatements == 0)
+        #expect(state.estimatedTotalStatements == 0)
         #expect(state.statusMessage == "")
     }
 
@@ -36,18 +35,16 @@ struct ImportServiceStateTests {
 
         service.state = ImportState(
             isImporting: true,
-            currentStatement: "CREATE TABLE users",
-            currentStatementIndex: 3,
-            totalStatements: 10,
+            processedStatements: 3,
+            estimatedTotalStatements: 10,
             statusMessage: "Importing..."
         )
 
         state.setService(service)
 
         #expect(state.isImporting == true)
-        #expect(state.currentStatement == "CREATE TABLE users")
-        #expect(state.currentStatementIndex == 3)
-        #expect(state.totalStatements == 10)
+        #expect(state.processedStatements == 3)
+        #expect(state.estimatedTotalStatements == 10)
         #expect(state.statusMessage == "Importing...")
     }
 
@@ -62,18 +59,15 @@ struct ImportServiceStateTests {
         state.setService(service)
 
         #expect(state.isImporting == false)
-        #expect(state.currentStatement == "")
 
         service.state.isImporting = true
-        service.state.currentStatement = "INSERT INTO orders"
-        service.state.currentStatementIndex = 7
-        service.state.totalStatements = 20
+        service.state.processedStatements = 7
+        service.state.estimatedTotalStatements = 20
         service.state.statusMessage = "Processing statements..."
 
         #expect(state.isImporting == true)
-        #expect(state.currentStatement == "INSERT INTO orders")
-        #expect(state.currentStatementIndex == 7)
-        #expect(state.totalStatements == 20)
+        #expect(state.processedStatements == 7)
+        #expect(state.estimatedTotalStatements == 20)
         #expect(state.statusMessage == "Processing statements...")
     }
 }