### Question:
DefaultLiteralConvertor implements LiteralConvertor<Object> { @Override public String convert(Object target) { if (target == null) return NULL_VALUE; return target.toString(); } DefaultLiteralConvertor(); @Override String convert(Object target); @Override Class<?> getJavaType();  }### Answer:
@Test public void Dateの値をリテラルに変換する() throws Exception { Boolean b = true; assertThat(target.convert(b), is("true")); }
@Test public void NULLリテラルに変換する() throws Exception { assertThat(target.convert(null), is("null")); }