Add demo for amending old commit

pkg/integration/tests/demo/amend_old_commit.go

@@ -0,0 +1,62 @@
+package demo
+
+import (
+	"github.com/jesseduffield/lazygit/pkg/config"
+	. "github.com/jesseduffield/lazygit/pkg/integration/components"
+)
+
+var AmendOldCommit = NewIntegrationTest(NewIntegrationTestArgs{
+	Description:  "Amend old commit",
+	ExtraCmdArgs: []string{},
+	Skip:         false,
+	IsDemo:       true,
+	SetupConfig: func(config *config.AppConfig) {
+		// No idea why I had to use version 2: it should be using my own computer's
+		// font and the one iterm uses is version 3.
+		config.UserConfig.Gui.NerdFontsVersion = "2"
+		config.UserConfig.Gui.ShowFileTree = false
+	},
+	SetupRepo: func(shell *Shell) {
+		shell.CreateNCommitsWithRandomMessages(60)
+		shell.NewBranch("feature/demo")
+
+		shell.CloneIntoRemote("origin")
+
+		shell.SetBranchUpstream("feature/demo", "origin/feature/demo")
+
+		shell.UpdateFile("navigation/site_navigation.go", "package navigation\n\nfunc Navigate() {\n\tpanic(\"unimplemented\")\n}")
+		shell.CreateFile("docs/README.md", "my readme content")
+	},
+	Run: func(t *TestDriver, keys config.KeybindingConfig) {
+		t.SetCaptionPrefix("Amend an old commit")
+		t.Wait(1000)
+
+		t.Views().Files().
+			IsFocused().
+			SelectedLine(Contains("site_navigation.go")).
+			PressPrimaryAction()
+
+		t.Views().Commits().
+			Focus().
+			NavigateToLine(Contains("Improve accessibility of site navigation")).
+			Wait(500).
+			Press(keys.Commits.AmendToCommit).
+			Tap(func() {
+				t.ExpectPopup().Confirmation().
+					Title(Equals("Amend commit")).
+					Wait(1000).
+					Content(AnyString()).
+					Confirm()
+
+				t.Wait(1000)
+			}).
+			Press(keys.Universal.Push).
+			Tap(func() {
+				t.ExpectPopup().Confirmation().
+					Title(Equals("Force push")).
+					Content(AnyString()).
+					Wait(1000).
+					Confirm()
+			})
+	},
+})