Replace whitespace with '-' when renaming a branch

pkg/integration/tests/branch/rename.go

@@ -0,0 +1,35 @@
+package branch
+
+import (
+	"github.com/jesseduffield/lazygit/pkg/config"
+	. "github.com/jesseduffield/lazygit/pkg/integration/components"
+)
+
+var Rename = NewIntegrationTest(NewIntegrationTestArgs{
+	Description:  "Rename a branch, replacing spaces in the name with dashes",
+	ExtraCmdArgs: []string{},
+	Skip:         false,
+	SetupConfig:  func(config *config.AppConfig) {},
+	SetupRepo: func(shell *Shell) {
+		shell.EmptyCommit("commit")
+	},
+	Run: func(t *TestDriver, keys config.KeybindingConfig) {
+		t.Views().Branches().
+			Focus().
+			Lines(
+				Contains("master"),
+			).
+			Press(keys.Branches.RenameBranch).
+			Tap(func() {
+				t.ExpectPopup().Prompt().
+					Title(Contains("Enter new branch name")).
+					InitialText(Equals("master")).
+					Clear().
+					Type("new branch name").
+					Confirm()
+			}).
+			Lines(
+				Contains("new-branch-name"),
+			)
+	},
+})