export default { props : { testName1 : 'test1' , testName2 : 'test2' } , html : '<div class="test1test2"></div>' , test ( { assert , component , target } ) { const div = target . querySelector ( 'div' ) ; assert . equal ( div . className , 'test1test2' ) ; component . testName1 = null ; component . testName2 = null ; assert . equal ( div . className , '0' ) ; component . testName1 = null ; component . testName2 = 'test' ; assert . equal ( div . className , 'nulltest' ) ; component . testName1 = undefined ; component . testName2 = 'test' ; assert . equal ( div . className , 'undefinedtest' ) ; component . testName1 = undefined ; component . testName2 = undefined ; assert . equal ( div . className , 'NaN' ) ; component . testName1 = null ; component . testName2 = 1 ; assert . equal ( div . className , '1' ) ; component . testName1 = undefined ; component . testName2 = 1 ; assert . equal ( div . className , 'NaN' ) ; component . testName1 = null ; component . testName2 = 0 ; assert . equal ( div . className , '0' ) ; component . testName1 = undefined ; component . testName2 = 0 ; assert . equal ( div . className , 'NaN' ) ; } } ;