Add a test for jumping to a file of a stash with diff.noprefix set

If diff.noprefix is set, the menu for jumping to a file of a stash
entry's diff leaves out the directory of a file under a top-level
directory named a or b.

Co-Authored-By: Claude Opus 5.5 (1M context) <[email protected]>

pkg/integration/tests/main_view/jump_to_a_file_of_a_stash_with_no_prefixes.go

@@ -0,0 +1,50 @@
+package main_view
+
+import (
+	"github.com/jesseduffield/lazygit/pkg/config"
+	. "github.com/jesseduffield/lazygit/pkg/integration/components"
+)
+
+var JumpToAFileOfAStashWithNoPrefixes = NewIntegrationTest(NewIntegrationTestArgs{
+	Description:  "Jump to a file in a directory named b of a stash entry's diff when diff.noprefix is set",
+	ExtraCmdArgs: []string{},
+	Skip:         false,
+	SetupConfig:  func(config *config.AppConfig) {},
+	SetupRepo: func(shell *Shell) {
+		shell.CreateFileAndAdd("b/file1", "one\n")
+		shell.CreateFileAndAdd("file2", "one\n")
+		shell.Commit("one")
+
+		shell.UpdateFile("b/file1", "two\n")
+		shell.UpdateFile("file2", "two\n")
+		shell.Stash("stash one")
+
+		// git then leaves out the a/ and b/ in front of the paths of a diff. The b/
+		// that the paths of file1 start with is its directory.
+		shell.SetConfig("diff.noprefix", "true")
+	},
+	Run: func(t *TestDriver, keys config.KeybindingConfig) {
+		t.Views().Stash().
+			Focus().
+			Lines(
+				Contains("stash one").IsSelected(),
+			).
+			Press(keys.Universal.FocusMainView)
+
+		t.Views().Main().
+			IsFocused().
+			SelectionIsActive().
+			Press(keys.Universal.JumpToFile)
+
+		t.ExpectPopup().Menu().
+			Title(Equals("Jump to file")).
+			Lines(
+				/* EXPECTED:
+				Equals("b/file1"),
+				ACTUAL: */
+				Equals("file1"),
+				Equals("file2"),
+				Equals("Cancel"),
+			)
+	},
+})

pkg/integration/tests/test_list.go

@@ -409,6 +409,7 @@ var tests = []*components.IntegrationTest{
 	main_view.FocusLeavesAnAlwaysSplitEmptyPane,
 	main_view.FocusReturnsWhenSplitCollapses,
 	main_view.HideSelectionWhenChangesVanish,
+	main_view.JumpToAFileOfAStashWithNoPrefixes,
 	main_view.JumpToAFileOfTheDiff,
 	main_view.JumpToAFileOnlyOverADiff,
 	main_view.KeepAWrappedLineCoveredAcrossARerender,