woocommerce/tests/php/includes/wc-stock-functions-tests.php

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<?php
/**
* Unit tests for wc-stock-functions.php.
*
* @package WooCommerce\Tests\Functions\Stock
*/
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/**
* Class WC_Stock_Functions_Tests.
*/
class WC_Stock_Functions_Tests extends \WC_Unit_Test_Case {
/**
* @var array List of statuses which reduces stock from inventory.
*/
public $order_stock_reduce_statuses = array(
'wc-processing',
'wc-completed',
'wc-on-hold',
);
/**
* @var array List of statuses which restores stock back into inventory.
*/
public $order_stock_restore_statuses = array(
'wc-cancelled',
'wc-pending',
);
/**
* @var array List of statuses which have no impact on inventory.
*/
public $order_stock_no_effect_statuses = array(
'wc-failed',
'wc-refunded',
);
/**
* Helper function to simulate creating order from cart.
*
* @param string $status Status for the newly created order.
*/
private function create_order_from_cart_with_status( $status ) {
$product = WC_Helper_Product::create_simple_product(
true,
array(
'manage_stock' => true,
'stock_quantity' => 10,
)
);
WC()->cart->empty_cart();
WC()->cart->add_to_cart( $product->get_id(), 1 );
WC()->cart->calculate_totals();
$checkout = WC_Checkout::instance();
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$order = new WC_Order();
$checkout->set_data_from_cart( $order );
$order->set_status( $status );
$order->save();
return $order;
}
/**
* Helper function to change order status and assert product inventory values.
*
* @param string $status_from Initial status of the order.
* @param string $status_to Status to transition the order to.
* @param int $before_transition Inventory value before order status is changed.
* @param int $after_transition Inventory value after order status change.
*/
private function transition_order_status_and_assert_stock_quantity( $status_from, $status_to, $before_transition, $after_transition ) {
$order = $this->create_order_from_cart_with_status( $status_from );
$order_item = array_values( $order->get_items( 'line_item' ) )[0];
$product = new WC_Product( $order_item->get_product_id() );
$this->assertEquals( $before_transition, $product->get_stock_quantity() );
// Changing status from UI also calls this method in metadata save hook. This has impact on stock levels, so simulate it here as well.
wc_save_order_items( $order, $order->get_items() );
$order->set_status( $status_to );
$order->save();
$product = new WC_Product( $order_item->get_product_id() );
$this->assertEquals( $after_transition, $product->get_stock_quantity(), "Stock levels unexpected when transitioning from $status_from to $status_to." );
}
/**
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* Test inventory count after order status transitions which reduces stock to another status which also reduces stock.
* Stock should have reduced once already, and should not reduce again.
*/
public function test_status_transition_stock_reduce_to_stock_reduce() {
foreach ( $this->order_stock_reduce_statuses as $order_status_from ) {
foreach ( $this->order_stock_reduce_statuses as $order_status_to ) {
$this->transition_order_status_and_assert_stock_quantity( $order_status_from, $order_status_to, 9, 9 );
}
}
}
/**
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* Test inventory count after order status transitions which reduces stock to another status which restores stock.
* Should should have already reduced once, and will increase again after transitioning.
*/
public function test_status_transition_stock_reduce_to_stock_restore() {
foreach ( $this->order_stock_reduce_statuses as $order_status_from ) {
foreach ( $this->order_stock_restore_statuses as $order_status_to ) {
$this->transition_order_status_and_assert_stock_quantity( $order_status_from, $order_status_to, 9, 10 );
}
}
}
/**
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* Test inventory count after order status transitions which reduces stock to another status which don't affect inventory.
* Stock should have already reduced, and will not change on transitioning.
*/
public function test_status_transition_stock_reduce_to_stock_no_effect() {
foreach ( $this->order_stock_reduce_statuses as $order_status_from ) {
foreach ( $this->order_stock_no_effect_statuses as $order_status_to ) {
$this->transition_order_status_and_assert_stock_quantity( $order_status_from, $order_status_to, 9, 9 );
}
}
}
/**
* Test inventory count after order status transtions which restores stock to another status which reduces stock.
* Stock should not have reduced, but will reduce after transition.
*/
public function test_status_transition_stock_restore_to_stock_reduce() {
foreach ( $this->order_stock_restore_statuses as $order_status_from ) {
foreach ( $this->order_stock_reduce_statuses as $order_status_to ) {
$this->transition_order_status_and_assert_stock_quantity( $order_status_from, $order_status_to, 10, 9 );
}
}
}
/**
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* Test inventory count after order status transitions which restores stock to another status which also restores stock.
* Stock should not have reduced, and will remain the same even after transition (i.e. should not be restocked again).
*/
public function test_status_transition_stock_restore_to_stock_restore() {
foreach ( $this->order_stock_restore_statuses as $order_status_from ) {
foreach ( $this->order_stock_restore_statuses as $order_status_to ) {
$this->transition_order_status_and_assert_stock_quantity( $order_status_from, $order_status_to, 10, 10 );
}
}
}
/**
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* Test inventory count after order status transitions which restores stock to another status which don't affect inventory.
* Stock should not have reduced, and will remain the same even after transition.
*/
public function test_status_transition_stock_restore_to_stock_no_effect() {
foreach ( $this->order_stock_restore_statuses as $order_status_from ) {
foreach ( $this->order_stock_no_effect_statuses as $order_status_to ) {
$this->transition_order_status_and_assert_stock_quantity( $order_status_from, $order_status_to, 10, 10 );
}
}
}
/**
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* Test inventory count after order status transitions which don't affect inventory stock to another status which reduces stock.
* Stock would not have been affected, but will reduce after transition.
*/
public function test_status_transition_stock_no_effect_to_stock_reduce() {
foreach ( $this->order_stock_no_effect_statuses as $order_status_from ) {
foreach ( $this->order_stock_reduce_statuses as $order_status_to ) {
$this->transition_order_status_and_assert_stock_quantity( $order_status_from, $order_status_to, 10, 9 );
}
}
}
/**
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* Test inventory count after order status transitions which don't affect inventory stock to another status which restores stock.
* Stock would not have been affected, and will not be restored after transition (since it was not reduced to begin with).
*/
public function test_status_transition_stock_no_effect_to_stock_restore() {
foreach ( $this->order_stock_no_effect_statuses as $order_status_from ) {
foreach ( $this->order_stock_restore_statuses as $order_status_to ) {
$this->transition_order_status_and_assert_stock_quantity( $order_status_from, $order_status_to, 10, 10 );
}
}
}
/**
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* Test inventory count after order status transitions which don't affect inventory stock to another status which also don't affect inventory.
* Stock levels will not change before or after the transition.
*/
public function test_status_transition_stock_no_effect_to_stock_no_effect() {
foreach ( $this->order_stock_no_effect_statuses as $order_status_from ) {
foreach ( $this->order_stock_no_effect_statuses as $order_status_to ) {
$this->transition_order_status_and_assert_stock_quantity( $order_status_from, $order_status_to, 10, 10 );
}
}
}
}