@Test
 public void port() {
   UriComponents uri1 = fromUriString("http://example.com:8080/bar").build();
   UriComponents uri2 = fromUriString("http://example.com/bar").port(8080).build();
   UriComponents uri3 =
       fromUriString("http://example.com/bar").port("{port}").build().expand(8080);
   UriComponents uri4 =
       fromUriString("http://example.com/bar").port("808{digit}").build().expand(0);
   assertEquals(8080, uri1.getPort());
   assertEquals("http://example.com:8080/bar", uri1.toUriString());
   assertEquals(8080, uri2.getPort());
   assertEquals("http://example.com:8080/bar", uri2.toUriString());
   assertEquals(8080, uri3.getPort());
   assertEquals("http://example.com:8080/bar", uri3.toUriString());
   assertEquals(8080, uri4.getPort());
   assertEquals("http://example.com:8080/bar", uri4.toUriString());
 }
 @Test
 public void expand() {
   UriComponents uriComponents =
       UriComponentsBuilder.fromUriString("http://example.com").path("/{foo} {bar}").build();
   uriComponents = uriComponents.expand("1 2", "3 4");
   assertEquals("/1 2 3 4", uriComponents.getPath());
   assertEquals("http://example.com/1 2 3 4", uriComponents.toUriString());
 }
 @Test
 public void copyToUriComponentsBuilder() {
   UriComponents source = UriComponentsBuilder.fromPath("/foo/bar").pathSegment("ba/z").build();
   UriComponentsBuilder targetBuilder = UriComponentsBuilder.newInstance();
   source.copyToUriComponentsBuilder(targetBuilder);
   UriComponents result = targetBuilder.build().encode();
   assertEquals("/foo/bar/ba%2Fz", result.getPath());
   assertEquals(Arrays.asList("foo", "bar", "ba%2Fz"), result.getPathSegments());
 }
 @Test
 public void toUriEncoded() throws URISyntaxException {
   UriComponents uriComponents =
       UriComponentsBuilder.fromUriString("http://example.com/hotel list/Z\u00fcrich").build();
   assertEquals(
       new URI("http://example.com/hotel%20list/Z%C3%BCrich"), uriComponents.encode().toUri());
 }
 @Test
 public void toUriWithIpv6HostAlreadyEncoded() throws URISyntaxException {
   UriComponents uriComponents =
       UriComponentsBuilder.fromUriString(
               "http://[1abc:2abc:3abc::5ABC:6abc]:8080/hotel%20list/Z%C3%BCrich")
           .build(true);
   UriComponents encoded = uriComponents.encode();
   assertEquals(
       new URI("http://[1abc:2abc:3abc::5ABC:6abc]:8080/hotel%20list/Z%C3%BCrich"),
       encoded.toUri());
 }
 @Test
 public void encode() {
   UriComponents uriComponents = UriComponentsBuilder.fromPath("/hotel list").build();
   UriComponents encoded = uriComponents.encode();
   assertEquals("/hotel%20list", encoded.getPath());
 }
 @Test
 public void normalize() {
   UriComponents uriComponents =
       UriComponentsBuilder.fromUriString("http://example.com/foo/../bar").build();
   assertEquals("http://example.com/bar", uriComponents.normalize().toString());
 }