off, decOff, firstPart, decryptSkip, seqNum = getCompressedOffsets(oi, off, decrypt)
			decLength = length
			length = oi.Size - off
			// For negative length we read everything.
			if decLength < 0 {
				decLength = actualSize - decOff
			}

			// Reply back invalid range if the input offset and length fall out of range.
			if decOff > actualSize || decOff+decLength > actualSize {

				t.Errorf("encoded data does not match\n\t%q\n\t%q", got, want)
			}

			var decBuf bytes.Buffer
			decRdr := s2.NewReader(&rdrBuf)
			_, err = io.Copy(&decBuf, decRdr)
			if err != nil {
				t.Fatal(err)
			}

			if !bytes.Equal(tt.data, decBuf.Bytes()) {
				t.Errorf("roundtrip failed\n\t%q\n\t%q", tt.data, decBuf.Bytes())
			}
		})
	}
}

func Test_pathNeedsClean(t *testing.T) {

EA,SAAA,KAGA,mBAAA,UAQF,OAEE,OAAA,EAAA,EAAA,KAQF,IACE,eAAA,OACA,aAAA,KAGF,IAGE,SAAA,OACA,eAAA,OAQF,MACE,gBAAA,SAGF,QACE,YAAA,OACA,eAAA,OACA,MAAA,QACA,WAAA,KACA,aAAA,OAOF,GAEE,WAAA,QACA,WAAA,qBAQF,MAEE,QAAA,aACA,cAAA,MAMF,OAEE,cAAA,EAQF,iCACE,QAAA,EChFF,ODmFA,MCjFA,SADA,OAEA,SDqFE,OAAA,EACA,YAAA,QEhKE,UAAA,QFkKF,YAAA,QAGF,OCnFA,MDqFE,SAAA,QAGF,OCnFA,ODqFE,eAAA,KGnFF,cH0FE,OAAA,QAMF,OACE,UAAA,OCtFF,cACA,aACA,cD2FA,OAIE,mBAAA,OC1FF,6BACA,4BACA,6BD6FE,sBAKI,OAAA,QC7FN,gCACA,+BACA,gCDiGA,yBAIE,QAAA,E...

A,QvBpBI,WAAA,MAAA,IAAA,KAKF,uCuBOJ,cvBNM,WAAA,MuBkBN,sBrBaE,iBAAA,iKqBXA,gBAAA,KAAA,KAIA,uBACE,kBAAA,qBAAA,GAAA,OAAA,SAAA,UAAA,qBAAA,GAAA,OAAA,SAGE,uCAJJ,uBAKM,kBAAA,KAAA,UAAA,MCzCR,OACE,QAAA,YAAA,QAAA,KACA,eAAA,MAAA,YAAA,WAGF,YACE,SAAA,EAAA,KAAA,ECFF,YACE,QAAA,YAAA,QAAA,KACA,mBAAA,OAAA,eAAA,OAGA,aAAA,EACA,cAAA,EASF,wBACE,MAAA,KACA,MAAA,QACA,WAAA,QvCNA,8BAAA,8BuCUE,QAAA,EACA,MAAA,QACA,gBAAA,KACA,iBAAA,QAVJ,+BAcI,MAAA,QACA,iBAAA,QASJ,iBACE,SAAA,SACA,QAAA,MACA,QAAA,OAAA,QAEA,iBAAA,KACA,OAAA,IAAA,...

AAA,QvBXI,WAAA,MAAA,IAAA,KAIA,uCuBDN,cvBEQ,WAAA,MuBUR,sBrBYE,iBAAA,iKqBVA,gBAAA,KAAA,KAIA,uBACE,kBAAA,GAAA,OAAA,SAAA,qBAAA,UAAA,GAAA,OAAA,SAAA,qBAGE,uCAJJ,uBAKM,kBAAA,KAAA,UAAA,MC1CR,OACE,QAAA,YAAA,QAAA,KACA,eAAA,MAAA,YAAA,WAGF,YACE,SAAA,EAAA,KAAA,ECFF,YACE,QAAA,YAAA,QAAA,KACA,mBAAA,OAAA,eAAA,OAGA,aAAA,EACA,cAAA,EnCQE,cAAA,OmCEJ,wBACE,MAAA,KACA,MAAA,QACA,WAAA,QxCPA,8BAAA,8BwCWE,QAAA,EACA,MAAA,QACA,gBAAA,KACA,iBAAA,QAVJ,+BAcI,MAAA,QACA,iBAAA,QASJ,iBACE,SAAA,SACA,QAAA,MACA,QAAA,OAAA,QAGA,iBAAA,KAC...