public function testSetPriceIncludesTax() { $this->assertFalse($this->_model->priceIncludesTax()); $this->assertSame($this->_model, $this->_model->setPriceIncludesTax(1)); $this->assertTrue($this->_model->priceIncludesTax()); $this->_model->setPriceIncludesTax(null); $this->assertFalse($this->_model->priceIncludesTax()); }