BehaviorAbstractTest.php

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<?php
namespace Magento\ImportExport\Test\Unit\Model\Source\Import;

class BehaviorAbstractTest extends \Magento\ImportExport\Test\Unit\Model\Source\Import\AbstractBehaviorTestCase
{
    protected $_sourceArray = ['key_1' => 'label_1', 'key_2' => 'label_2'];

    protected $_expectedOptions = [
        ['value' => 'key_1', 'label' => 'label_1'],
        ['value' => 'key_2', 'label' => 'label_2'],
    ];

    protected function setUp()
    {
        parent::setUp();

        $model = $this->getMockForAbstractClass(
            \Magento\ImportExport\Model\Source\Import\AbstractBehavior::class,
            [[]],
            '',
            false,
            true,
            true,
            ['toArray']
        );
        $model->expects($this->any())->method('toArray')->will($this->returnValue($this->_sourceArray));

        $this->_model = $model;
    }

    public function testToOptionArray()
    {
        $actualOptions = $this->_model->toOptionArray();

        // all elements must have value and label fields
        foreach ($actualOptions as $option) {
            $this->assertArrayHasKey('value', $option);
            $this->assertArrayHasKey('label', $option);
        }

        // first element must has empty value
        $firstElement = $actualOptions[0];
        $this->assertEquals('', $firstElement['value']);

        // other elements must be equal to expected data
        $actualOptions = array_slice($actualOptions, 1);
        $this->assertEquals($this->_expectedOptions, $actualOptions);
    }
}