Path implements CacheValue, Comparable<Path> { @Nullable public Path getParent() { return parent; } private  Path(@Nullable Path parent,
                 @NotNull String name,
                 int hash);  Path(@NotNull Path parent, @NotNull String name);  Path(@NotNull String name); @NotNull String getName(); @NotNull Iterable<String> elements(); boolean isRoot(); @Nullable Path getParent(); int length(); int getDepth(); @NotNull Path getAncestor(int nth); boolean isAncestorOf(@NotNull Path other); boolean isAbsolute(); @NotNull static Path fromString(@NotNull String path); @NotNull StringBuilder toStringBuilder(@NotNull StringBuilder sb); @Override int getMemory(); @Override int compareTo(@NotNull Path other); @Override String toString(); @Override int hashCode(); @Override boolean equals(Object obj); static final Path ROOT; }
@Test public void getParent() { assertNull(root.getParent()); assertEquals(foo.getParent(), root); assertEquals(fooBar.getParent(), foo); assertEquals(fooBarQuux.getParent(), fooBar); assertNull(relFoo.getParent()); assertEquals(relFooBar.getParent(), relFoo); assertEquals(relFooBarQuux.getParent(), relFooBar); }