### Question:
MiscIRODSUtils { public static final String subtractPrefixFromGivenPath(final String prefix, final String path) throws JargonException { if (prefix == null) { throw new IllegalArgumentException("null prefix"); } if (path == null || path.isEmpty()) { throw new IllegalArgumentException("null or empty path"); } int prefixSize = prefix.length(); int pathSize = path.length(); if (prefixSize >= pathSize) { throw new JargonException("given path does not contain the prefix"); } String pathFirst = path.substring(0, prefixSize); if (!pathFirst.equals(prefix)) { throw new JargonException("given path does not contain the prefix"); } return path.substring(prefixSize); } private  MiscIRODSUtils(); static String normalizeIrodsPath(final String irodsPath); static String escapePasswordChars(final String password); static String buildTrashHome(final String userName, final String zoneName); static String buildPathZoneAndHome(final String zoneName); static String buildTrashOrphanPath(final String zoneName); static String buildTrashHome(final String zoneName); static String getDefaultIRODSResourceFromAccountIfFileInZone(final String irodsAbsolutePath,
			final IRODSAccount irodsAccount); static boolean isFileInThisZone(final String irodsAbsolutePath, final IRODSAccount irodsAccount); static String getZoneInPath(final String irodsAbsolutePath); static List<String> breakIRODSPathIntoComponents(final String irodsAbsolutePath); static String buildPathFromComponentsUpToIndex(final List<String> pathComponents, final int lastIndex); static String convertStreamToString(final InputStream inputStream); static String convertStreamToString(final InputStream inputStream, final String encoding); static String getUserInUserName(final String userName); static String getZoneInUserName(final String userName); static String humanReadableByteCount(final long bytes); static String computeMD5HashOfAStringValue(final String input); static String computeHomeDirectoryForIRODSAccount(final IRODSAccount irodsAccount); static String computeHomeDirectoryForIRODSAccountInFederatedZone(final IRODSAccount irodsAccount,
			final String zone); static String computeHomeDirectoryForGivenUserInSameZoneAsIRODSAccount(final IRODSAccount irodsAccount,
			final String irodsUserName); static String computePublicDirectory(final IRODSAccount irodsAccount); static String getLastPathComponentForGivenAbsolutePath(final String collectionPath); static void evaluateSpecCollSupport(final ObjStat objStat); static String buildAbsolutePathFromCollectionParentAndFileName(final String collectionPath,
			final String dataName); static String determineAbsolutePathBasedOnCollTypeInObjectStat(final ObjStat objStat); static CollectionAndPath separateCollectionAndPathFromGivenAbsolutePath(final String filePath); static List<String> getDisplayValuesFromEnum(final Class<T> enumClass); static int countCharsInString(final String stringToCountOccurrancesIn, final char characterToCount); static String padRight(final String s, final int n); static String padLeft(final String s, final int n); static String checkPathSizeForMax(final String path); static String buildIRODSUserHomeForAccountUsingDefaultScheme(final IRODSAccount irodsAccount); static void checkPathSizeForMax(final String parentPath, final String childPath); static final String abbreviateFileName(final String fileName); static final String wrapStringInQuotes(final String string); static final String subtractPrefixFromGivenPath(final String prefix, final String path);  }### Answer:
@Test(expected = JargonException.class) public void testSubtractPrefixFromGivenPathShorterThanPrefix() throws Exception { String prefix = "/a/prefix/here"; String path = "/a/pre"; MiscIRODSUtils.subtractPrefixFromGivenPath(prefix, path); }
@Test public void testSubtractPrefixFromGivenPath() throws Exception { String prefix = "/a/prefix/here"; String remainder = "/and/some/more"; String path = prefix + remainder; String actual = MiscIRODSUtils.subtractPrefixFromGivenPath(prefix, path); Assert.assertEquals(remainder, actual); }