add reviewer assigning

branch_completion_test.go

@@ -56,11 +56,10 @@ func TestTargetBranchCompletionIsKeyboardFirst(t *testing.T) {
 		},
 		BaseRef: "main", Permissions: ViewerPermissions{CanUpdatePR: true},
 	}
-	command := m.startPREdit()
-	if command == nil {
+	if command := m.startPREdit(); command == nil {
 		t.Fatal("opening the editor did not request branches")
 	}
-	updated, _ := m.Update(command())
+	updated, _ := m.Update(m.loadPREditBranches()())
 	m = updated.(App)
 	m.prEditField = prEditBaseField
 	m.prEditEditors[prEditBaseField] = newTextEditor("release", false)
@@ -79,7 +78,7 @@ func TestTargetBranchCompletionIsKeyboardFirst(t *testing.T) {
 
 	updated, _ = m.updatePREditInput(tea.KeyMsg{Type: tea.KeyTab})
 	m = updated.(App)
-	if m.prEditField != prEditBodyField {
+	if m.prEditField != prEditReviewersField {
 		t.Fatalf("second tab did not advance: field=%d", m.prEditField)
 	}
 }