diff --git a/composeApp/src/desktopMain/kotlin/com/clipevery/app/LinuxAppWindowManager.kt b/composeApp/src/desktopMain/kotlin/com/clipevery/app/LinuxAppWindowManager.kt
index 2ba233b29..e125338ac 100644
--- a/composeApp/src/desktopMain/kotlin/com/clipevery/app/LinuxAppWindowManager.kt
+++ b/composeApp/src/desktopMain/kotlin/com/clipevery/app/LinuxAppWindowManager.kt
@@ -4,6 +4,7 @@ import com.clipevery.listen.ActiveGraphicsDevice
 import com.clipevery.listener.ShortcutKeys
 import com.clipevery.os.linux.api.X11Api
 import com.sun.jna.platform.unix.X11.Window
+import kotlinx.coroutines.delay
 import kotlinx.coroutines.launch
 
 class LinuxAppWindowManager(
@@ -70,6 +71,9 @@ class LinuxAppWindowManager(
         }
 
         prevLinuxAppInfo = X11Api.bringToFront(SEARCH_WINDOW_TITLE)
+
+        delay(500)
+        searchFocusRequester.requestFocus()
     }
 
     override suspend fun unActiveSearchWindow(preparePaste: suspend () -> Boolean) {
diff --git a/composeApp/src/desktopTest/kotlin/com/clipevery/app/TestAppWindowManager.kt b/composeApp/src/desktopTest/kotlin/com/clipevery/app/TestAppWindowManager.kt
index c7cdb4a14..8c599dd8c 100644
--- a/composeApp/src/desktopTest/kotlin/com/clipevery/app/TestAppWindowManager.kt
+++ b/composeApp/src/desktopTest/kotlin/com/clipevery/app/TestAppWindowManager.kt
@@ -1,57 +1,38 @@
 package com.clipevery.app
 
-import com.clipevery.listen.ActiveGraphicsDevice
 import kotlinx.coroutines.runBlocking
-import org.junit.jupiter.api.BeforeEach
-import org.junit.jupiter.api.TestInstance
 import kotlin.test.Test
 import kotlin.test.assertEquals
 import kotlin.test.assertNull
 
-@TestInstance(TestInstance.Lifecycle.PER_CLASS)
 class TestAppWindowManager {
 
-    companion object {
-
-        var testAppWindowManager: AppWindowManager =
-            DesktopAppWindowManager(
-                lazy { throw NotImplementedError("not invoke") },
-                object : ActiveGraphicsDevice {
-                    override fun getGraphicsDevice() = null
-                },
-                -1,
-            )
-
-        @BeforeEach
-        fun setUp() {
-            TestWindowManager.init()
-        }
-    }
-
     @Test
     fun testMockTestAppWindowManager() {
+        val mockOS = MockOS()
+        val testAppWindowManager = TestWindowManager(mockOS)
         assertNull(testAppWindowManager.getPrevAppName())
         runBlocking { testAppWindowManager.toPaste() }
-        assertEquals(1, TestWindowManager.pasterId)
+        assertEquals(1, testAppWindowManager.pasterId)
         assertNull(testAppWindowManager.getCurrentActiveAppName())
         testAppWindowManager.activeMainWindow()
         assertEquals("Clipevery", testAppWindowManager.getCurrentActiveAppName())
         testAppWindowManager.unActiveMainWindow()
         assertNull(testAppWindowManager.getCurrentActiveAppName())
-        TestWindowManager.activeApp("Chrome")
+        mockOS.currentApp = "Chrome"
         runBlocking { testAppWindowManager.activeSearchWindow() }
         assertEquals("Clipevery", testAppWindowManager.getCurrentActiveAppName())
         assertEquals("Chrome", testAppWindowManager.getPrevAppName())
         runBlocking { testAppWindowManager.unActiveSearchWindow(preparePaste = { true }) }
-        assertEquals(2, TestWindowManager.pasterId)
+        assertEquals(2, testAppWindowManager.pasterId)
         assertEquals("Chrome", testAppWindowManager.getCurrentActiveAppName())
         testAppWindowManager.activeMainWindow()
         runBlocking { testAppWindowManager.activeSearchWindow() }
         assertEquals("Clipevery", testAppWindowManager.getCurrentActiveAppName())
         assertEquals("Chrome", testAppWindowManager.getPrevAppName())
         runBlocking { testAppWindowManager.unActiveSearchWindow(preparePaste = { false }) }
-        assertEquals(2, TestWindowManager.pasterId)
+        assertEquals(2, testAppWindowManager.pasterId)
         runBlocking { testAppWindowManager.toPaste() }
-        assertEquals(3, TestWindowManager.pasterId)
+        assertEquals(3, testAppWindowManager.pasterId)
     }
 }
diff --git a/composeApp/src/desktopTest/kotlin/com/clipevery/app/TestWindowManager.kt b/composeApp/src/desktopTest/kotlin/com/clipevery/app/TestWindowManager.kt
index 6e19b86f6..f4bcc8227 100644
--- a/composeApp/src/desktopTest/kotlin/com/clipevery/app/TestWindowManager.kt
+++ b/composeApp/src/desktopTest/kotlin/com/clipevery/app/TestWindowManager.kt
@@ -1,33 +1,63 @@
 package com.clipevery.app
 
-object TestWindowManager : WindowManager {
+import kotlinx.coroutines.runBlocking
 
-    var prevApp: String? = null
+class TestWindowManager(
+    private val mockOS: MockOS,
+) : AbstractAppWindowManager() {
 
-    var currentApp: String? = null
+    var prevApp: String? = null
 
     var pasterId: Int = 0
 
+    var currentTitle: String? = null
+
     override fun getPrevAppName(): String? {
         return prevApp
     }
 
     override fun getCurrentActiveAppName(): String? {
-        return currentApp
+        return mockOS.currentApp
+    }
+
+    override fun activeMainWindow() {
+        showMainWindow = true
+        bringToFront(MAIN_WINDOW_TITLE)
+    }
+
+    override fun unActiveMainWindow() {
+        runBlocking {
+            bringToBack(MAIN_WINDOW_TITLE, false)
+        }
+        showMainWindow = false
+    }
+
+    override suspend fun activeSearchWindow() {
+        showSearchWindow = true
+
+        bringToFront(SEARCH_WINDOW_TITLE)
     }
 
-    override suspend fun bringToFront(windowTitle: String) {
-        if (currentApp != "Clipevery") {
-            prevApp = currentApp
+    override suspend fun unActiveSearchWindow(preparePaste: suspend () -> Boolean) {
+        val toPaste = preparePaste()
+        bringToBack(SEARCH_WINDOW_TITLE, toPaste)
+        showSearchWindow = false
+    }
+
+    private fun bringToFront(windowTitle: String) {
+        currentTitle = windowTitle
+        if (mockOS.currentApp != "Clipevery") {
+            prevApp = mockOS.currentApp
         }
-        currentApp = "Clipevery"
+        mockOS.currentApp = "Clipevery"
     }
 
-    override suspend fun bringToBack(
+    private suspend fun bringToBack(
         windowTitle: String,
         toPaste: Boolean,
     ) {
-        currentApp = prevApp
+        currentTitle = windowTitle
+        mockOS.currentApp = prevApp
         if (toPaste) {
             toPaste()
         }
@@ -36,14 +66,6 @@ object TestWindowManager : WindowManager {
     override suspend fun toPaste() {
         pasterId++
     }
-
-    fun init() {
-        prevApp = null
-        currentApp = null
-        pasterId = 0
-    }
-
-    fun activeApp(appName: String) {
-        currentApp = appName
-    }
 }
+
+class MockOS(var currentApp: String? = null)