public void testConversion() {
BigDecimalConverter bigDecimalConverter = new BigDecimalConverter();
assertNull(bigDecimalConverter.convert(null));
assertEquals(new BigDecimal("1.2345"), bigDecimalConverter.convert(new BigDecimal("1.2345")));
assertEquals(new BigDecimal("1.2345"), bigDecimalConverter.convert("1.2345"));
assertEquals(new BigDecimal("1.2345"), bigDecimalConverter.convert(" 1.2345 "));
assertEquals(new BigDecimal("1.2345"), bigDecimalConverter.convert(Double.valueOf(1.2345D)));
assertEquals(new BigDecimal("123456789"), bigDecimalConverter.convert(Long.valueOf(123456789)));
}