feat: improve textbox editor behaviour

user_completion_test.go

@@ -50,6 +50,36 @@ func TestReviewerCompletionSupportsMultipleEligibleUsers(t *testing.T) {
 	}
 }
 
+func TestReviewerCompletionUsesEnterAndTabLeavesField(t *testing.T) {
+	m := NewApp(&recordingPRService{}, "o", "r", false, 50, time.Second)
+	m.writeMode = writePREdit
+	m.prEditField = prEditReviewersField
+	m.details = PRDetails{PullRequest: PullRequest{Author: "author"}}
+	m.prEditUsers = []RepositoryUser{{Login: "alice", CanReview: true}}
+	m.prEditEditors[prEditReviewersField] = newTextEditor("ali", false)
+
+	updated, _ := m.updatePREditInput(tea.KeyMsg{Type: tea.KeyTab})
+	m = updated.(App)
+	if m.prEditField != prEditAssigneesField ||
+		m.prEditEditors[prEditReviewersField].Text != "ali" {
+		t.Fatalf(
+			"tab field=%d reviewers=%q",
+			m.prEditField, m.prEditEditors[prEditReviewersField].Text,
+		)
+	}
+
+	m.prEditField = prEditReviewersField
+	updated, _ = m.updatePREditInput(tea.KeyMsg{Type: tea.KeyEnter})
+	m = updated.(App)
+	if m.prEditField != prEditReviewersField ||
+		m.prEditEditors[prEditReviewersField].Text != "alice" {
+		t.Fatalf(
+			"enter field=%d reviewers=%q",
+			m.prEditField, m.prEditEditors[prEditReviewersField].Text,
+		)
+	}
+}
+
 func TestReviewerInputCommitsMultipleEligibleUsersWithSpace(t *testing.T) {
 	m := NewApp(&recordingPRService{}, "o", "r", false, 50, time.Second)
 	m.writeMode = writePREdit