From a85d6e03499e650f5ef84c80062a76ce375076ca Mon Sep 17 00:00:00 2001
From: Stefan Haller <stefan@haller-berlin.de>
Date: Sat, 8 Aug 2026 15:32:08 +0200
Subject: [PATCH] Add a test for dragging a range selection past the bottom of
 a panel

This is the other place that manages its own scroll position: while a
drag extends the selection to a line below the viewport, the view stays
put, and the drag autoscroller scrolls it one line at a time for as long
as the pointer stays there. Making the scroll automatic would centre the
selection instead, i.e. jump the view rather than scroll it.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
---
 pkg/integration/tests/test_list.go            |  1 +
 .../tests/ui/drag_beyond_viewport.go          | 37 +++++++++++++++++++
 2 files changed, 38 insertions(+)
 create mode 100644 pkg/integration/tests/ui/drag_beyond_viewport.go

diff --git a/pkg/integration/tests/test_list.go b/pkg/integration/tests/test_list.go
index c9f4f975d..ab7bf196c 100644
--- a/pkg/integration/tests/test_list.go
+++ b/pkg/integration/tests/test_list.go
@@ -500,6 +500,7 @@ var tests = []*components.IntegrationTest{
 	ui.BranchesNotFirstTab,
 	ui.CommitsNotFirstTab,
 	ui.DisableSwitchTabWithPanelJumpKeys,
+	ui.DragBeyondViewport,
 	ui.EmptyMenu,
 	ui.HideSidePanel,
 	ui.KeybindingSuggestionsDontCrashOnDisabledBindings,
diff --git a/pkg/integration/tests/ui/drag_beyond_viewport.go b/pkg/integration/tests/ui/drag_beyond_viewport.go
new file mode 100644
index 000000000..f756a783c
--- /dev/null
+++ b/pkg/integration/tests/ui/drag_beyond_viewport.go
@@ -0,0 +1,37 @@
+package ui
+
+import (
+	"fmt"
+
+	"github.com/jesseduffield/lazygit/pkg/config"
+	. "github.com/jesseduffield/lazygit/pkg/integration/components"
+)
+
+var DragBeyondViewport = NewIntegrationTest(NewIntegrationTestArgs{
+	Description:  "Dragging a range selection beyond the bottom of the panel doesn't scroll the view",
+	ExtraCmdArgs: []string{},
+	Skip:         false,
+	Width:        120,
+	Height:       30,
+	SetupConfig:  func(config *config.AppConfig) {},
+	SetupRepo: func(shell *Shell) {
+		shell.EmptyCommit("initial commit")
+		for i := range 20 {
+			shell.CreateFile(fmt.Sprintf("file%02d", i), "")
+		}
+	},
+	Run: func(t *TestDriver, keys config.KeybindingConfig) {
+		t.Views().Files().
+			Focus().
+			OriginY(0).
+			// The pointer ends up below the panel, so the range extends to a line
+			// that isn't visible. Scrolling there is the drag autoscroller's job,
+			// which scrolls line by line for as long as the pointer stays there;
+			// the drag itself must leave the scroll position alone.
+			ClickAndHold(1, 1).
+			MouseMove(1, 8).
+			MouseRelease().
+			SelectedLineIdx(8).
+			OriginY(0)
+	},
+})