woocommerce/tests/unit-tests/product/product-variation.php

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<?php
/**
* Tests for the WC_Product_Variation class.
*
* @package WooCommerce\Tests\Product
*/
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/**
* Class Product_Variation.
*
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* @since 3.0
*/
class WC_Tests_Product_Variation extends WC_Unit_Test_Case {
/**
* Test is_sold_individually().
*
* @since 2.3
*/
public function test_is_sold_individually() {
// Create a variable product with sold individually.
$product = new WC_Product_Variable();
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$product->set_sold_individually( true );
$product->save();
$variation = new WC_Product_Variation();
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$variation->set_parent_id( $product->get_id() );
$variation->save();
$variation = wc_get_product( $variation->get_id() );
$this->assertTrue( $variation->is_sold_individually() );
}
/**
* Check get_tax_class against different parent child scenarios
*/
public function test_get_tax_class() {
$product = new WC_Product_Variable();
$product->set_tax_class( 'standard' );
$product->save();
$variation = new WC_Product_Variation();
$variation->set_parent_id( $product->get_id() );
$variation->set_tax_class( 'parent' );
$variation->save();
$variation = wc_get_product( $variation->get_id() );
$this->assertEquals( '', $variation->get_tax_class( 'unfiltered' ) );
$this->assertEquals( 'parent', $variation->get_tax_class( 'edit' ) );
$this->assertEquals( '', $variation->get_tax_class( 'view' ) );
$variation->set_tax_class( 'standard' );
$variation->save();
$variation = wc_get_product( $variation->get_id() );
$this->assertEquals( '', $variation->get_tax_class( 'unfiltered' ) );
$this->assertEquals( '', $variation->get_tax_class( 'edit' ) );
$this->assertEquals( '', $variation->get_tax_class( 'view' ) );
$variation->set_tax_class( 'reduced-rate' );
$variation->save();
$variation = wc_get_product( $variation->get_id() );
$this->assertEquals( 'reduced-rate', $variation->get_tax_class( 'unfiltered' ) );
$this->assertEquals( 'reduced-rate', $variation->get_tax_class( 'edit' ) );
$this->assertEquals( 'reduced-rate', $variation->get_tax_class( 'view' ) );
$product->set_tax_class( 'zero-rate' );
$product->save();
$variation->set_tax_class( 'parent' );
$variation->save();
$variation = wc_get_product( $variation->get_id() );
$this->assertEquals( 'zero-rate', $variation->get_tax_class( 'unfiltered' ) );
$this->assertEquals( 'parent', $variation->get_tax_class( 'edit' ) );
$this->assertEquals( 'zero-rate', $variation->get_tax_class( 'view' ) );
}
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}