String.prototype.concat.length PASSED!
aString.concat(' more') PASSED!
aString.concat(bString) PASSED!
aString                 PASSED!
bString                 PASSED!
aString.concat(345)     PASSED!
aString.concat(true)    PASSED!
aString.concat(null)    PASSED!
aString.concat([])      PASSED!
aString.concat([1,2,3]) PASSED!
'abcde'.concat(' more') PASSED!
'abcde'.concat(bString) PASSED!
'abcde'                 PASSED!
'abcde'.concat(345)     PASSED!
'abcde'.concat(true)    PASSED!
'abcde'.concat(null)    PASSED!
'abcde'.concat([])      PASSED!
'abcde'.concat([1,2,3]) PASSED!
'abcde'.concat([1,2,3]) PASSED!
'abcde'.concat()        PASSED!
myobj.concat([1,2,3]) PASSED!
