Add integration test for deleting a remote branch with credentials prompt

This test is interesting because it shows a credentials prompt inside a
WithWaitingStatus. Prior to this branch this test would have hung forever.

pkg/integration/tests/branch/delete_remote_branch_with_credential_prompt.go

@@ -0,0 +1,87 @@
+package branch
+
+import (
+	"github.com/jesseduffield/lazygit/pkg/config"
+	. "github.com/jesseduffield/lazygit/pkg/integration/components"
+)
+
+var DeleteRemoteBranchWithCredentialPrompt = NewIntegrationTest(NewIntegrationTestArgs{
+	Description:  "Delete a remote branch where credentials are required",
+	ExtraCmdArgs: []string{},
+	Skip:         false,
+	SetupConfig: func(config *config.AppConfig) {
+	},
+	SetupRepo: func(shell *Shell) {
+		shell.EmptyCommit("one")
+
+		shell.CloneIntoRemote("origin")
+
+		shell.NewBranch("mybranch")
+
+		shell.PushBranch("origin", "mybranch")
+
+		// actually getting a password prompt is tricky: it requires SSH'ing into localhost under a newly created, restricted, user.
+		// This is not easy to do in a cross-platform way, nor is it easy to do in a docker container.
+		// If you can think of a way to do it, please let me know!
+		shell.CopyHelpFile("pre-push", ".git/hooks/pre-push")
+	},
+	Run: func(t *TestDriver, keys config.KeybindingConfig) {
+		deleteBranch := func() {
+			t.Views().Branches().
+				Focus().
+				Press(keys.Universal.Remove)
+
+			t.ExpectPopup().
+				Menu().
+				Title(Equals("Delete branch 'mybranch'?")).
+				Select(Contains("Delete remote branch")).
+				Confirm()
+
+			t.ExpectPopup().
+				Confirmation().
+				Title(Equals("Delete branch 'mybranch'?")).
+				Content(Equals("Are you sure you want to delete the remote branch 'mybranch' from 'origin'?")).
+				Confirm()
+		}
+
+		t.Views().Status().Content(Contains("✓ repo → mybranch"))
+
+		deleteBranch()
+
+		// correct credentials are: username=username, password=password
+
+		t.ExpectPopup().Prompt().
+			Title(Equals("Username")).
+			Type("username").
+			Confirm()
+
+		// enter incorrect password
+		t.ExpectPopup().Prompt().
+			Title(Equals("Password")).
+			Type("incorrect password").
+			Confirm()
+
+		t.ExpectPopup().Alert().
+			Title(Equals("Error")).
+			Content(Contains("incorrect username/password")).
+			Confirm()
+
+		t.Views().Status().Content(Contains("✓ repo → mybranch"))
+
+		// try again with correct password
+		deleteBranch()
+
+		t.ExpectPopup().Prompt().
+			Title(Equals("Username")).
+			Type("username").
+			Confirm()
+
+		t.ExpectPopup().Prompt().
+			Title(Equals("Password")).
+			Type("password").
+			Confirm()
+
+		t.Views().Status().Content(Contains("repo → mybranch").DoesNotContain("✓"))
+		t.Views().Branches().TopLines(Contains("mybranch (upstream gone)"))
+	},
+})

pkg/integration/tests/test_list.go

@@ -38,6 +38,7 @@ var tests = []*components.IntegrationTest{
 	branch.CheckoutByName,
 	branch.CreateTag,
 	branch.Delete,
+	branch.DeleteRemoteBranchWithCredentialPrompt,
 	branch.DetachedHead,
 	branch.OpenWithCliArg,
 	branch.Rebase,