From cf3c0c4c98126dfb9c08bd5cb741473cee3e8fad Mon Sep 17 00:00:00 2001
From: Nicolas GEHIN <nicolas@rvola.com>
Date: Tue, 7 Mar 2023 10:22:52 +0100
Subject: [PATCH] Test unit for PR #36885

---
 .../class-wc-abstract-order-test.php          | 40 +++++++++++++++++++
 1 file changed, 40 insertions(+)

diff --git a/plugins/woocommerce/tests/php/includes/abstracts/class-wc-abstract-order-test.php b/plugins/woocommerce/tests/php/includes/abstracts/class-wc-abstract-order-test.php
index 5a8cdf5e67b..3b2cc7a9c46 100644
--- a/plugins/woocommerce/tests/php/includes/abstracts/class-wc-abstract-order-test.php
+++ b/plugins/woocommerce/tests/php/includes/abstracts/class-wc-abstract-order-test.php
@@ -269,4 +269,44 @@ class WC_Abstract_Order_Test extends WC_Unit_Test_Case {
 		$this->assertEquals( $coupon->get_id(), $coupon_data['id'] );
 		$this->assertEquals( $coupon_code, $coupon_data['code'] );
 	}
+
+	/**
+	 * Test for get_discount_to_display which must return a value
+	 * with and without tax whatever the setting of the options
+	 *
+	 * Issue :https://github.com/woocommerce/woocommerce/issues/36794
+	 */
+	public function test_get_discount_to_display() {
+		// Set dummy data
+		$tax_rate = array(
+			'tax_rate_country'  => '',
+			'tax_rate_state'    => '',
+			'tax_rate'          => '20.0000',
+			'tax_rate_name'     => 'tax',
+			'tax_rate_priority' => '1',
+			'tax_rate_order'    => '1',
+		);
+		WC_Tax::_insert_tax_rate( $tax_rate );
+
+		$coupon  = WC_Helper_Coupon::create_coupon();
+		$product = WC_Helper_Product::create_simple_product();
+
+		$order = new WC_Order();
+		$order->add_product( $product );
+		$order->apply_coupon( $coupon );
+		$order->calculate_totals();
+		$order->save();
+
+		// Test
+		update_option( 'woocommerce_currency', 'USD' );
+		update_option( 'woocommerce_currency_pos', 'right' );
+		update_option( 'woocommerce_price_thousand_sep', '' );
+		update_option( 'woocommerce_price_decimal_sep', '.' );
+		update_option( 'woocommerce_price_num_decimals', 2 );
+
+		update_option( 'woocommerce_tax_display_cart', 'incl' );
+		$this->assertEquals( '1.00$', strip_tags( $order->get_discount_to_display( 'excl' ) ) );
+		$this->assertEquals( '1.20$', strip_tags( $order->get_discount_to_display( 'incl' ) ) );
+	}
+
 }