Add integration test

pkg/integration/components/commit_description_panel_driver.go

@@ -41,6 +41,17 @@ func (self *CommitDescriptionPanelDriver) GoToBeginning() *CommitDescriptionPane
 	return self
 }
 
+func (self *CommitDescriptionPanelDriver) AddCoAuthor(author string) *CommitDescriptionPanelDriver {
+	self.t.press(self.t.keys.CommitMessage.CommitMenu)
+	self.t.ExpectPopup().Menu().Title(Equals("Commit Menu")).
+		Select(Contains("Add co-author")).
+		Confirm()
+	self.t.ExpectPopup().Prompt().Title(Contains("Add co-author")).
+		Type(author).
+		Confirm()
+	return self
+}
+
 func (self *CommitDescriptionPanelDriver) Title(expected *TextMatcher) *CommitDescriptionPanelDriver {
 	self.getViewDriver().Title(expected)
 

pkg/integration/tests/commit/add_co_author_while_committing.go

@@ -0,0 +1,51 @@
+package commit
+
+import (
+	"github.com/jesseduffield/lazygit/pkg/config"
+	. "github.com/jesseduffield/lazygit/pkg/integration/components"
+)
+
+var AddCoAuthorWhileCommitting = NewIntegrationTest(NewIntegrationTestArgs{
+	Description:  "Add co-author while typing the commit message",
+	ExtraCmdArgs: []string{},
+	Skip:         false,
+	SetupConfig: func(config *config.AppConfig) {
+	},
+	SetupRepo: func(shell *Shell) {
+		shell.CreateFile("file", "file content")
+	},
+	Run: func(t *TestDriver, keys config.KeybindingConfig) {
+		t.Views().Files().
+			IsFocused().
+			PressPrimaryAction(). // stage file
+			Press(keys.Files.CommitChanges)
+
+		t.ExpectPopup().CommitMessagePanel().
+			Type("Subject").
+			SwitchToDescription().
+			Type("Here's my message.").
+			AddCoAuthor("John Doe <john@doe.com>").
+			Content(Equals("Here's my message.\n\nCo-authored-by: John Doe <john@doe.com>")).
+			AddCoAuthor("Jane Smith <jane@smith.com>").
+			// Second co-author doesn't add a blank line:
+			Content(Equals("Here's my message.\n\nCo-authored-by: John Doe <john@doe.com>\nCo-authored-by: Jane Smith <jane@smith.com>")).
+			SwitchToSummary().
+			Confirm()
+
+		t.Views().Commits().
+			Lines(
+				Contains("Subject"),
+			).
+			Focus().
+			Tap(func() {
+				t.Views().Main().ContainsLines(
+					Equals("    Subject"),
+					Equals("    "),
+					Equals("    Here's my message."),
+					Equals("    "),
+					Equals("    Co-authored-by: John Doe <john@doe.com>"),
+					Equals("    Co-authored-by: Jane Smith <jane@smith.com>"),
+				)
+			})
+	},
+})

pkg/integration/tests/test_list.go

@@ -64,6 +64,7 @@ var tests = []*components.IntegrationTest{
 	cherry_pick.CherryPickDuringRebase,
 	cherry_pick.CherryPickRange,
 	commit.AddCoAuthor,
+	commit.AddCoAuthorWhileCommitting,
 	commit.Amend,
 	commit.AutoWrapMessage,
 	commit.Commit,