Change add to cart button text per category

functions.php

<?php
//* Do NOT include the opening php tag shown above. Copy the code shown below.

//* Change add to cart button text per category
add_filter( 'woocommerce_product_single_add_to_cart_text', 'wps_custom_cart_button_text' );
function wps_custom_cart_button_text() {

	global $product;
	$terms = get_the_terms( $product->ID, 'product_cat' );
	 foreach ($terms as $term) {

		$product_cat = $term->slug;
		break;

	}

	switch($product_cat) {

	    case 'clothing';
	    return __('Order your Clothes', 'your_theme_text_domain' );

	    default;
	    return __( 'Order now', 'your_theme_text_domain' );

	}

}