private static void assertIllegalNormalizations(
      PathNormalization first, PathNormalization... more) {
    try {
      Configuration.builder(PathType.unix()).setNameCanonicalNormalization(first, more);
      fail();
    } catch (IllegalArgumentException expected) {
    }

    try {
      Configuration.builder(PathType.unix()).setNameDisplayNormalization(first, more);
      fail();
    } catch (IllegalArgumentException expected) {
    }
  }
Tests for {@link Configuration}, {@link Configuration.Builder} and file systems created from
them.

@author Colin Decker
jimfs/src/test/java/com/google/common/jimfs/ConfigurationTest.java