Add test for reverting a commit that conflicts

This works already (except that the "you are here" marker is not right yet, but
that's an issue for another PR), just add a test that verifies it.

pkg/integration/tests/commit/revert_with_conflict_single_commit.go

@@ -0,0 +1,82 @@
+package commit
+
+import (
+	"github.com/jesseduffield/lazygit/pkg/config"
+	. "github.com/jesseduffield/lazygit/pkg/integration/components"
+)
+
+var RevertWithConflictSingleCommit = NewIntegrationTest(NewIntegrationTestArgs{
+	Description:  "Reverts a commit that conflicts",
+	ExtraCmdArgs: []string{},
+	Skip:         false,
+	SetupConfig:  func(config *config.AppConfig) {},
+	SetupRepo: func(shell *Shell) {
+		shell.CreateFileAndAdd("myfile", "")
+		shell.Commit("add empty file")
+		shell.CreateFileAndAdd("myfile", "first line\n")
+		shell.Commit("add first line")
+		shell.UpdateFileAndAdd("myfile", "first line\nsecond line\n")
+		shell.Commit("add second line")
+	},
+	Run: func(t *TestDriver, keys config.KeybindingConfig) {
+		t.Views().Commits().
+			Focus().
+			Lines(
+				Contains("CI ◯ add second line").IsSelected(),
+				Contains("CI ◯ add first line"),
+				Contains("CI ◯ add empty file"),
+			).
+			SelectNextItem().
+			Press(keys.Commits.RevertCommit).
+			Tap(func() {
+				t.ExpectPopup().Confirmation().
+					Title(Equals("Revert commit")).
+					Content(MatchesRegexp(`Are you sure you want to revert \w+?`)).
+					Confirm()
+				t.ExpectPopup().Alert().
+					Title(Equals("Error")).
+					// The exact error message is different on different git versions,
+					// but they all contain the word 'conflict' somewhere.
+					Content(Contains("conflict")).
+					Confirm()
+			}).
+			Lines(
+				/* EXPECTED:
+				Proper display of revert commits is not implemented yet; we'll do this in the next PR
+				Contains("revert").Contains("CI <-- CONFLICT --- add first line"),
+				Contains("CI ◯ add second line"),
+				Contains("CI ◯ add first line"),
+				Contains("CI ◯ add empty file"),
+				ACTUAL: */
+				Contains("CI ◯ <-- YOU ARE HERE --- add second line"),
+				Contains("CI ◯ add first line"),
+				Contains("CI ◯ add empty file"),
+			)
+
+		t.Views().Options().Content(Contains("View revert options: m"))
+		t.Views().Information().Content(Contains("Reverting (Reset)"))
+
+		t.Views().Files().Focus().
+			Lines(
+				Contains("UU myfile").IsSelected(),
+			).
+			PressEnter()
+
+		t.Views().MergeConflicts().IsFocused().
+			SelectNextItem().
+			PressPrimaryAction()
+
+		t.ExpectPopup().Alert().
+			Title(Equals("Continue")).
+			Content(Contains("All merge conflicts resolved. Continue the revert?")).
+			Confirm()
+
+		t.Views().Commits().
+			Lines(
+				Contains(`CI ◯ Revert "add first line"`),
+				Contains("CI ◯ add second line"),
+				Contains("CI ◯ add first line"),
+				Contains("CI ◯ add empty file"),
+			)
+	},
+})

pkg/integration/tests/test_list.go

@@ -128,6 +128,7 @@ var tests = []*components.IntegrationTest{
 	commit.ResetAuthorRange,
 	commit.Revert,
 	commit.RevertMerge,
+	commit.RevertWithConflictSingleCommit,
 	commit.Reword,
 	commit.Search,
 	commit.SetAuthor,