assertEquals('#Not Yet Implemented', $result); } public function testDIV0() { $result = PHPExcel_Calculation_Functions::DIV0(); $this->assertEquals('#DIV/0!', $result); } public function testNA() { $result = PHPExcel_Calculation_Functions::NA(); $this->assertEquals('#N/A', $result); } public function testNaN() { $result = PHPExcel_Calculation_Functions::NaN(); $this->assertEquals('#NUM!', $result); } public function testNAME() { $result = PHPExcel_Calculation_Functions::NAME(); $this->assertEquals('#NAME?', $result); } public function testREF() { $result = PHPExcel_Calculation_Functions::REF(); $this->assertEquals('#REF!', $result); } public function testNULL() { $result = PHPExcel_Calculation_Functions::NULL(); $this->assertEquals('#NULL!', $result); } public function testVALUE() { $result = PHPExcel_Calculation_Functions::VALUE(); $this->assertEquals('#VALUE!', $result); } }