}

  public void testStringConverter_convert() {
    Converter<String, Double> converter = Doubles.stringConverter();
    assertThat(converter.convert("1.0")).isEqualTo(1.0);
    assertThat(converter.convert("0.0")).isEqualTo(0.0);
    assertThat(converter.convert("-1.0")).isEqualTo(-1.0);
    assertThat(converter.convert("1")).isEqualTo(1.0);
    assertThat(converter.convert("0")).isEqualTo(0.0);

import static org.junit.Assert.assertThat;

import java.sql.Time;
import java.sql.Timestamp;
import java.util.Date;

import org.codelibs.core.beans.converter.DateConverter;
import org.codelibs.core.beans.converter.NumberConverter;
import org.codelibs.core.exception.ConverterRuntimeException;
import org.junit.Test;

/**
 * @author higa
 */
public class CopyOptionsTest {

    /**

     * @return The converted {@literal String}
     */
    public static String toString(final Object value) {
        return toString(value, null);
    }

    /**
     * Converts the given object to a string.
     *
     * @param value
     *            The object to convert
     * @param pattern
     *            The pattern string
     * @return The converted {@literal String}
     */

     *            The object to convert
     * @return The converted {@link Short}
     */
    public static Short toShort(final Object o) {
        return toShort(o, null);
    }

    /**
     * Converts to {@link Short}.
     *
     * @param o
     *            The object to convert
     * @param pattern
     *            The pattern string
     * @return The converted {@link Short}
     */

  public void testStringConverter_convert() {
    Converter<String, Float> converter = Floats.stringConverter();
    assertThat(converter.convert("1.0")).isEqualTo(1.0f);
    assertThat(converter.convert("0.0")).isEqualTo(0.0f);
    assertThat(converter.convert("-1.0")).isEqualTo(-1.0f);
    assertThat(converter.convert("1")).isEqualTo(1.0f);
    assertThat(converter.convert("0")).isEqualTo(0.0f);

  public void testStringConverter_convert() {
    Converter<String, Float> converter = Floats.stringConverter();
    assertThat(converter.convert("1.0")).isEqualTo(1.0f);
    assertThat(converter.convert("0.0")).isEqualTo(0.0f);
    assertThat(converter.convert("-1.0")).isEqualTo(-1.0f);
    assertThat(converter.convert("1")).isEqualTo(1.0f);
    assertThat(converter.convert("0")).isEqualTo(0.0f);

principais funcionalidades necessárias em sistemas de API é a "<dfn title="também chamado: marshalling, conversão">serialização</dfn>" de dados, que é pegar dados do código (Python) e convertê-los em algo que possa ser enviado pela rede. Por exemplo, converter um objeto contendo dados de um banco de dados em um objeto JSON. Converter objetos `datetime` em strings, etc.

Outra grande funcionalidade necessária pelas APIs é a validação de dados, garantindo que os dados são válidos, dados certos parâmetros....

     *            The object to convert
     * @return The converted {@link Float}
     */
    public static Float toFloat(final Object o) {
        return toFloat(o, null);
    }

    /**
     * Converts to {@link Float}.
     *
     * @param o
     *            The object to convert
     * @param pattern
     *            The pattern string
     * @return The converted {@link Float}
     */

     * @return The converted {@link BigDecimal}
     */
    public static BigDecimal toBigDecimal(final Object o) {
        return toBigDecimal(o, null);
    }

    /**
     * Converts to {@link BigDecimal}.
     *
     * @param o
     *            The object to convert
     * @param pattern
     *            The pattern string
     * @return The converted {@link BigDecimal}
     */

   *       the same.
   *   <li>The special characters ".", "-", "*", and "_" remain the same.
   *   <li>The space character " " is converted into a plus sign "+".
   *   <li>All other characters are converted into one or more bytes using UTF-8 encoding and each
   *       byte is then represented by the 3-character string "%XY", where "XY" is the two-digit,