switch test.fault {
				case MissingContentLength:
					req.ContentLength = -1
					// Setting the content length to a value greater than the max allowed size of a part.
					// Used in test case  4.
				case TooBigObject:
					req.ContentLength = globalMaxObjectSize + 1
					// Malformed signature.
					// Used in test case  6.
				case BadSignature: