@Test public void testConcatRelativePaths() { assertNull(PathUtils.concatRelativePaths("", "", "")); assertNull(PathUtils.concatRelativePaths()); assertEquals("a/b/c", PathUtils.concatRelativePaths("a", "b", "c")); assertEquals("a/b/c", PathUtils.concatRelativePaths("a", "b/c")); assertEquals("a/b/c", PathUtils.concatRelativePaths("a/b/c", "")); assertEquals("a/b/c", PathUtils.concatRelativePaths("a/b", "c")); assertEquals("a/b/c", PathUtils.concatRelativePaths("/", "a", "", "b/c/")); }