String result = $.format("hello: {}, {}", "moe", 123);
        // "hello: moe, 123

import com.github.underscore.lodash.$;
import org.junit.Test;
import static org.junit.Assert.assertEquals;

public class StringTest {

    @Test
    public void toJsonFromXml() {
        final String xml = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<root>\n"
            + "  <FirstItem>1</FirstItem>\n  <SecondItem>2</SecondItem>\n</root>";
        assertEquals("{\n"
            + "  \"root\": {\n"
            + "    \"FirstItem\": \"1\",\n"
            + "    \"SecondItem\": \"2\"\n"
            + "  }\n"
            + "}",
            $.toJson((Map<String, Object>) $.fromXml(xml)));
    }
}

import java.util.*;
import com.github.underscore.$;
import com.github.underscore.Template;
import org.junit.Test;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;

public class CheckTest {

    @Test
    public void check() {
        Template<Map<String, Object>> compiled = $.template("hello: <%= name %>");
        assertTrue(compiled.check(new LinkedHashMap<String, Object>() { {
            put("name", "moe"); } }).isEmpty());
        assertEquals("name2", compiled.check(new LinkedHashMap<String, Object>() { {
            put("name2", "moe"); } }).get(0));
    }
}

        
  String result = U.format("hello: {}, {}", "moe", 123);
  // "hello: moe, 123

        List<List<String>> result = com.github.underscore.math.U.createPermutationWithRepetition(asList("apple", "orange"), 3);
        assertEquals("[[apple, apple, apple],"
                   + " [orange, apple, apple],"
                   + " [apple, orange, apple],"
                   + " [orange, orange, apple],"
                   + " [apple, apple, orange],"
                   + " [orange, apple, orange],"
                   + " [apple, orange, orange],"
                   + " [orange, orange, orange]]", result.toString());

    @Test
    public void xmlToJson() {
        assertEquals("{\n  \"a\": {\n    \"b\": [\n      {\n      },\n      {\n      }\n    ]\n  }\n}",
            U.xmlToJson("<a>\n  <b>\n  </b>\n  <b>\n  </b>\n</a>"));
    }

    @Test
    public void jsonToXml() {
        assertEquals("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<a>\n</a>", U.jsonToXml("{\n  \"a\": {\n  }\n}"));
    }