added coverage for fix_length. #150
added coverage for fix_length. #150

imsparsh/librosa,yunque/librosa,Cortexelus/librosa,stefan-balke/librosa,stefan-balke/librosa,Cortexelus/librosa,ruohoruotsi/librosa,carlthome/librosa,craffel/librosa,Cortexelus/librosa,r9y9/librosa,decebel/librosa,ruohoruotsi/librosa,decebel/librosa,imsparsh/librosa,carlthome/librosa,yunque/librosa,r9y9/librosa,stefan-balke/librosa,r9y9/librosa,craffel/librosa,carlthome/librosa,craffel/librosa,ruohoruotsi/librosa