From eaf490d7f0d4d7d66bc6690c3837ec774912e728 Mon Sep 17 00:00:00 2001
From: Yuliya Karalenka <yuliya.karalenka@jetbrains.com>
Date: Mon, 4 Aug 2025 18:35:10 +0200
Subject: [PATCH] [terminal] Add test to check terminal completion behavior
 while up and down actions

(cherry picked from commit 7a82f0dffca6abeb9e9f85f95d5ead6011fbf4dd)

IJ-MR-170869

GitOrigin-RevId: ec6b884863d92ce906ee8fc4bbc98a7df1c88818
---
 .../frontend/TerminalCompletionFixture.kt     | 46 ++++++++++++-------
 .../frontend/TerminalCompletionTest.kt        | 18 ++++++++
 2 files changed, 48 insertions(+), 16 deletions(-)

diff --git a/plugins/terminal/tests/src/com/intellij/terminal/tests/reworked/frontend/TerminalCompletionFixture.kt b/plugins/terminal/tests/src/com/intellij/terminal/tests/reworked/frontend/TerminalCompletionFixture.kt
index 4d68af8c4a2c..93c7dd822a9f 100644
--- a/plugins/terminal/tests/src/com/intellij/terminal/tests/reworked/frontend/TerminalCompletionFixture.kt
+++ b/plugins/terminal/tests/src/com/intellij/terminal/tests/reworked/frontend/TerminalCompletionFixture.kt
@@ -54,22 +54,7 @@ class TerminalCompletionFixture(val project: Project, testRootDisposable: Dispos
   }
 
   fun callCompletionPopup() {
-    val actionId = "Terminal.CommandCompletion.Gen2"
-    val action = ActionManager.getInstance().getAction(actionId)
-
-    val context = SimpleDataContext.builder()
-      .add(CommonDataKeys.PROJECT, project)
-      .add(CommonDataKeys.EDITOR, view.outputEditor)
-      .add(TerminalOutputModel.KEY, view.outputModel)
-      .build()
-
-    val event = AnActionEvent.createEvent(action, context, null,
-                                          "", ActionUiKind.NONE, null)
-
-    ActionUtil.updateAction(action, event)
-    if (event.presentation.isEnabledAndVisible) {
-      ActionUtil.performAction(action, event)
-    }
+    runActionById("Terminal.CommandCompletion.Gen2")
   }
 
   fun isLookupActive(): Boolean {
@@ -82,4 +67,33 @@ class TerminalCompletionFixture(val project: Project, testRootDisposable: Dispos
     val activeLookup = lookupManager.activeLookup
     return activeLookup?.items ?: emptyList()
   }
+
+  fun getCurrentItem(): LookupElement? {
+    val lookupManager = LookupManager.getInstance(project)
+    val activeLookup = lookupManager.activeLookup
+    return activeLookup?.currentItem
+  }
+
+  fun downCompletionPopup() {
+    runActionById("Terminal.DownCommandCompletion")
+  }
+
+  fun upCompletionPopup() {
+    runActionById("Terminal.UpCommandCompletion")
+  }
+
+  private fun runActionById(actionId: String) {
+    val action = ActionManager.getInstance().getAction(actionId)
+    val context = SimpleDataContext.builder()
+      .add(CommonDataKeys.PROJECT, project)
+      .add(CommonDataKeys.EDITOR, view.outputEditor)
+      .add(TerminalOutputModel.KEY, view.outputModel)
+      .build()
+    val event = AnActionEvent.createEvent(action, context, null,
+                                          "", ActionUiKind.NONE, null)
+    ActionUtil.updateAction(action, event)
+    if (event.presentation.isEnabledAndVisible) {
+      ActionUtil.performAction(action, event)
+    }
+  }
 }
\ No newline at end of file
diff --git a/plugins/terminal/tests/src/com/intellij/terminal/tests/reworked/frontend/TerminalCompletionTest.kt b/plugins/terminal/tests/src/com/intellij/terminal/tests/reworked/frontend/TerminalCompletionTest.kt
index 1f0170951c23..1bb60fe3095f 100644
--- a/plugins/terminal/tests/src/com/intellij/terminal/tests/reworked/frontend/TerminalCompletionTest.kt
+++ b/plugins/terminal/tests/src/com/intellij/terminal/tests/reworked/frontend/TerminalCompletionTest.kt
@@ -1,6 +1,7 @@
 package com.intellij.terminal.tests.reworked.frontend
 
 import com.intellij.testFramework.fixtures.BasePlatformTestCase
+import org.junit.Assert.assertNotEquals
 import org.junit.Test
 import org.junit.runner.RunWith
 import org.junit.runners.JUnit4
@@ -24,4 +25,21 @@ class TerminalCompletionTest : BasePlatformTestCase() {
     assertEquals(listOf("stage", "stash", "status"), resultStrings)
   }
 
+  @Test
+  fun `test terminal completion up and down`() {
+    val terminalCompletionFixture = TerminalCompletionFixture(project, testRootDisposable)
+    terminalCompletionFixture.type("git b")
+    terminalCompletionFixture.callCompletionPopup()
+    val startResult = terminalCompletionFixture.getLookupElements()
+    assertEquals(3, startResult.size)
+
+    val firstElement = terminalCompletionFixture.getCurrentItem()
+    terminalCompletionFixture.downCompletionPopup()
+    val secondElement = terminalCompletionFixture.getCurrentItem()
+    terminalCompletionFixture.upCompletionPopup()
+    val fistAfterElement = terminalCompletionFixture.getCurrentItem()
+
+    assertEquals(firstElement, fistAfterElement)
+    assertNotEquals(secondElement, fistAfterElement)
+  }
 }
\ No newline at end of file