ManagerTest.php

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<?php
namespace Magento\Framework\Module\Test\Unit;

class ManagerTest extends \PHPUnit\Framework\TestCase
{
    const XML_PATH_OUTPUT_ENABLED = 'custom/is_module_output_enabled';

    private $_model;

    private $_moduleList;

    private $_outputConfig;

    protected function setUp()
    {
        $this->_moduleList = $this->getMockForAbstractClass(\Magento\Framework\Module\ModuleListInterface::class);
        $this->_moduleList->expects($this->any())
            ->method('getOne')
            ->will($this->returnValueMap([
                ['Module_One', ['name' => 'One_Module', 'setup_version' => '1']],
                ['Module_Two', ['name' => 'Two_Module', 'setup_version' => '2']],
                ['Module_Three', ['name' => 'Two_Three']],
            ]));
        $this->_outputConfig = $this->getMockForAbstractClass(\Magento\Framework\Module\Output\ConfigInterface::class);
        $this->_model = new \Magento\Framework\Module\Manager(
            $this->_outputConfig,
            $this->_moduleList,
            [
                'Module_Two' => self::XML_PATH_OUTPUT_ENABLED,
            ]
        );
    }

    public function testIsEnabled()
    {
        $this->_moduleList->expects($this->exactly(2))->method('has')->will($this->returnValueMap([
            ['Module_Exists', true],
            ['Module_NotExists', false],
        ]));
        $this->assertTrue($this->_model->isEnabled('Module_Exists'));
        $this->assertFalse($this->_model->isEnabled('Module_NotExists'));
    }

    public function testIsOutputEnabledReturnsFalseForDisabledModule()
    {
        $this->_outputConfig->expects($this->any())->method('isSetFlag')->will($this->returnValue(true));
        $this->assertFalse($this->_model->isOutputEnabled('Disabled_Module'));
    }

    public function testIsOutputEnabledGenericConfigPath($configValue, $expectedResult)
    {
        $this->_moduleList->expects($this->once())->method('has')->will($this->returnValue(true));
        $this->_outputConfig->expects($this->once())
            ->method('isEnabled')
            ->with('Module_One')
            ->will($this->returnValue($configValue));
        $this->assertEquals($expectedResult, $this->_model->isOutputEnabled('Module_One'));
    }

    public function isOutputEnabledGenericConfigPathDataProvider()
    {
        return ['output disabled' => [true, false], 'output enabled' => [false, true]];
    }

    public function testIsOutputEnabledCustomConfigPath($configValue, $expectedResult)
    {
        $this->_moduleList->expects($this->once())->method('has')->will($this->returnValue(true));
        $this->_outputConfig->expects($this->at(0))
            ->method('isSetFlag')
            ->with(self::XML_PATH_OUTPUT_ENABLED)
            ->will($this->returnValue($configValue));
        $this->assertEquals($expectedResult, $this->_model->isOutputEnabled('Module_Two'));
    }

    public function isOutputEnabledCustomConfigPathDataProvider()
    {
        return [
            'path literal, output disabled' => [false, false],
            'path literal, output enabled'  => [true, true],
        ];
    }
}