Add integration test

pkg/integration/components/commit_description_panel_driver.go

@@ -31,6 +31,16 @@ func (self *CommitDescriptionPanelDriver) AddNewline() *CommitDescriptionPanelDr
 	return self
 }
 
+func (self *CommitDescriptionPanelDriver) GoToBeginning() *CommitDescriptionPanelDriver {
+	numLines := len(self.getViewDriver().getView().BufferLines())
+	for i := 0; i < numLines; i++ {
+		self.t.pressFast("<up>")
+	}
+
+	self.t.pressFast("<c-a>")
+	return self
+}
+
 func (self *CommitDescriptionPanelDriver) Title(expected *TextMatcher) *CommitDescriptionPanelDriver {
 	self.getViewDriver().Title(expected)
 

pkg/integration/tests/commit/auto_wrap_message.go

@@ -0,0 +1,59 @@
+package commit
+
+import (
+	"github.com/jesseduffield/lazygit/pkg/config"
+	. "github.com/jesseduffield/lazygit/pkg/integration/components"
+)
+
+var AutoWrapMessage = NewIntegrationTest(NewIntegrationTestArgs{
+	Description:  "Commit, and test how the commit message body is auto-wrapped",
+	ExtraCmdArgs: []string{},
+	Skip:         false,
+	SetupConfig: func(config *config.AppConfig) {
+		// Use a ridiculously small width so that we don't have to use so much test data
+		config.UserConfig.Git.Commit.AutoWrapWidth = 20
+	},
+	SetupRepo: func(shell *Shell) {
+		shell.CreateFile("file", "file content")
+	},
+	Run: func(t *TestDriver, keys config.KeybindingConfig) {
+		t.Views().Commits().
+			IsEmpty()
+
+		t.Views().Files().
+			IsFocused().
+			PressPrimaryAction(). // stage file
+			Press(keys.Files.CommitChanges)
+
+		t.ExpectPopup().CommitMessagePanel().
+			Type("subject").
+			SwitchToDescription().
+			Type("Lorem ipsum dolor sit amet, consectetur adipiscing elit.").
+			// See how it automatically inserted line feeds to wrap the text:
+			Content(Equals("Lorem ipsum dolor \nsit amet, \nconsectetur \nadipiscing elit.")).
+			SwitchToSummary().
+			Confirm()
+
+		t.Views().Commits().
+			Lines(
+				Contains("subject"),
+			).
+			Focus().
+			Tap(func() {
+				t.Views().Main().Content(Contains(
+					"subject\n    \n    Lorem ipsum dolor\n    sit amet,\n    consectetur\n    adipiscing elit."))
+			}).
+			Press(keys.Commits.RenameCommit)
+
+		// Test that when rewording, the hard line breaks are turned back into
+		// soft ones, so that we can insert text at the beginning and have the
+		// paragraph reflow nicely.
+		t.ExpectPopup().CommitMessagePanel().
+			InitialText(Equals("subject")).
+			SwitchToDescription().
+			Content(Equals("Lorem ipsum dolor \nsit amet, \nconsectetur \nadipiscing elit.")).
+			GoToBeginning().
+			Type("More text. ").
+			Content(Equals("More text. Lorem \nipsum dolor sit \namet, consectetur \nadipiscing elit."))
+	},
+})

pkg/integration/tests/test_list.go

@@ -65,6 +65,7 @@ var tests = []*components.IntegrationTest{
 	cherry_pick.CherryPickRange,
 	commit.AddCoAuthor,
 	commit.Amend,
+	commit.AutoWrapMessage,
 	commit.Commit,
 	commit.CommitMultiline,
 	commit.CommitSwitchToEditor,