Add test to check that an "edit" entry correctly shows a conflict

This works correctly, we are only adding this as a regression test to verify
that the change later in this branch doesn't break it.

pkg/integration/tests/interactive_rebase/interactive_rebase_with_conflict_for_edit_command.go

@@ -0,0 +1,63 @@
+package interactive_rebase
+
+import (
+	"github.com/jesseduffield/lazygit/pkg/config"
+	. "github.com/jesseduffield/lazygit/pkg/integration/components"
+)
+
+var InteractiveRebaseWithConflictForEditCommand = NewIntegrationTest(NewIntegrationTestArgs{
+	Description:  "Rebase a branch interactively, and edit a commit that will conflict",
+	ExtraCmdArgs: []string{},
+	Skip:         false,
+	SetupConfig:  func(cfg *config.AppConfig) {},
+	SetupRepo: func(shell *Shell) {
+		shell.EmptyCommit("initial commit")
+		shell.CreateFileAndAdd("file.txt", "master content")
+		shell.Commit("master commit")
+		shell.NewBranchFrom("branch", "master^")
+		shell.CreateNCommits(3)
+		shell.CreateFileAndAdd("file.txt", "branch content")
+		shell.Commit("this will conflict")
+	},
+	Run: func(t *TestDriver, keys config.KeybindingConfig) {
+		t.Views().Commits().
+			Focus().
+			Lines(
+				Contains("this will conflict").IsSelected(),
+				Contains("commit 03"),
+				Contains("commit 02"),
+				Contains("commit 01"),
+				Contains("initial commit"),
+			)
+
+		t.Views().Branches().
+			Focus().
+			NavigateToLine(Contains("master")).
+			Press(keys.Branches.RebaseBranch)
+
+		t.ExpectPopup().Menu().
+			Title(Equals("Rebase 'branch'")).
+			Select(Contains("Interactive rebase")).
+			Confirm()
+
+		t.Views().Commits().
+			IsFocused().
+			NavigateToLine(Contains("this will conflict")).
+			Press(keys.Universal.Edit)
+
+		t.Common().ContinueRebase()
+		t.ExpectPopup().Menu().
+			Title(Equals("Conflicts!")).
+			Cancel()
+
+		t.Views().Commits().
+			Lines(
+				Contains("edit").Contains("<-- CONFLICT --- this will conflict").IsSelected(),
+				Contains("commit 03"),
+				Contains("commit 02"),
+				Contains("commit 01"),
+				Contains("master commit"),
+				Contains("initial commit"),
+			)
+	},
+})

pkg/integration/tests/test_list.go

@@ -250,6 +250,7 @@ var tests = []*components.IntegrationTest{
 	interactive_rebase.FixupFirstCommit,
 	interactive_rebase.FixupSecondCommit,
 	interactive_rebase.InteractiveRebaseOfCopiedBranch,
+	interactive_rebase.InteractiveRebaseWithConflictForEditCommand,
 	interactive_rebase.MidRebaseRangeSelect,
 	interactive_rebase.Move,
 	interactive_rebase.MoveAcrossBranchBoundaryOutsideRebase,