Testing Custom Header Delete or Save Actions

protected function getHeaderActions(): array
    {
        return [
            DeleteAction::make('customHeaderAction')
                ->modalDescription(function (?Measurement $record) {
                    if (! $record->isUsedByRelatedModels()) {
                        // Show the default confirmation if there are no linked items
                        return null;
                    } else {
                        return new HtmlString(
                            'You cannot delete this record<br><br>'
                            .'Use the form at the bottom of this page to see which items need to enable deleting.'
                        );
                    }
                })
        ];
    }

livewire(EditMeasurement::class, [
            'record' => $record->id,
        ])
            ->assertActionExists(TestAction::make('customHeaderAction'))
            ->mountAction(TestAction::make('customHeaderAction'))
            ->assertSee('You cannot delete this record');