public class UnitToStringTest {
@Test
- public void testToString() {
+ public void testPositiveToString() {
+ // very small positive numbers ( < 0.0005) are returned as "0"
assertEquals("0",Unit.NOUNIT2.toString(0.00040));
- assertEquals("0",Unit.NOUNIT2.toString(0.00050));
- assertEquals("0",Unit.NOUNIT2.toString(0.00051));
- assertEquals("0",Unit.NOUNIT2.toString(0.00060));
- assertEquals("0",Unit.NOUNIT2.toString(0.0049));
- assertEquals("0",Unit.NOUNIT2.toString(0.0050));
- assertEquals("0.01",Unit.NOUNIT2.toString(0.0051));
- assertEquals("0",Unit.NOUNIT2.toString(0.00123));
- assertEquals("0.01",Unit.NOUNIT2.toString(0.0123));
- assertEquals("0.12",Unit.NOUNIT2.toString(0.1234));
- assertEquals("1.23",Unit.NOUNIT2.toString(1.2345));
- assertEquals("12.3",Unit.NOUNIT2.toString(12.345));
- assertEquals("123",Unit.NOUNIT2.toString(123.456));
- assertEquals("1235",Unit.NOUNIT2.toString(1234.5678));
- assertEquals("12346",Unit.NOUNIT2.toString(12345.6789));
+ assertEquals("0",Unit.NOUNIT2.toString(0.00050)); // check boundary of change in format
+
+ // positive number < 0.095 use 3 digit decimal format
+ assertEquals("0.001",Unit.NOUNIT2.toString(0.00051)); // check boundary of change in format
+ assertEquals("0.001",Unit.NOUNIT2.toString(0.00060));
+
+ // rounding at third digit.
+ assertEquals("0.001",Unit.NOUNIT2.toString(0.0014));
+ assertEquals("0.002",Unit.NOUNIT2.toString(0.0015)); // round to even
+ assertEquals("0.002",Unit.NOUNIT2.toString(0.0016));
+ assertEquals("0.002",Unit.NOUNIT2.toString(0.0024));
+ assertEquals("0.002",Unit.NOUNIT2.toString(0.0025)); // round to even
+ assertEquals("0.003",Unit.NOUNIT2.toString(0.0026));
+ assertEquals("0.009",Unit.NOUNIT2.toString(0.0094));
+
+ assertEquals("0.01",Unit.NOUNIT2.toString(0.0095)); // no trailing zeros after rounding
+
+ assertEquals("0.011",Unit.NOUNIT2.toString(0.0114));
+ assertEquals("0.012",Unit.NOUNIT2.toString(0.0115)); // round to even
+ assertEquals("0.012",Unit.NOUNIT2.toString(0.0119));
+ assertEquals("0.012",Unit.NOUNIT2.toString(0.0124));
+ assertEquals("0.012",Unit.NOUNIT2.toString(0.0125)); // round to even
+ assertEquals("0.013",Unit.NOUNIT2.toString(0.0129));
+
+ assertEquals("0.095",Unit.NOUNIT2.toString(0.0949)); // boundary check
+
+ // positive numbers < 100
+ assertEquals("0.1",Unit.NOUNIT2.toString(0.095)); // boundary check
+
+ assertEquals("0.11",Unit.NOUNIT2.toString(0.111));
+ assertEquals("0.12",Unit.NOUNIT2.toString(0.115)); // round to even
+ assertEquals("0.12",Unit.NOUNIT2.toString(0.117));
+ assertEquals("0.12",Unit.NOUNIT2.toString(0.121));
+ assertEquals("0.12",Unit.NOUNIT2.toString(0.125)); // round to even
+ assertEquals("0.13",Unit.NOUNIT2.toString(0.127));
+
+ assertEquals("1.11",Unit.NOUNIT2.toString(1.113));
+ assertEquals("1.12",Unit.NOUNIT2.toString(1.115)); // round to even
+ assertEquals("1.12",Unit.NOUNIT2.toString(1.117));
+ assertEquals("1.12",Unit.NOUNIT2.toString(1.123));
+ assertEquals("1.12",Unit.NOUNIT2.toString(1.125)); // round to even
+ assertEquals("1.13",Unit.NOUNIT2.toString(1.127));
+
+ assertEquals("12.3",Unit.NOUNIT2.toString(12.320));
+ assertEquals("12.4",Unit.NOUNIT2.toString(12.350)); // round to even
+ assertEquals("12.4",Unit.NOUNIT2.toString(12.355));
+ assertEquals("12.4",Unit.NOUNIT2.toString(12.420));
+ assertEquals("12.4",Unit.NOUNIT2.toString(12.450)); // round to even
+ assertEquals("12.5",Unit.NOUNIT2.toString(12.455));
+
+ // positive numbers <= 1E6
+ assertEquals("123",Unit.NOUNIT2.toString(123.20));
+ assertEquals("124",Unit.NOUNIT2.toString(123.50)); // round to even
+ assertEquals("124",Unit.NOUNIT2.toString(123.55));
+ assertEquals("124",Unit.NOUNIT2.toString(124.20));
+ assertEquals("124",Unit.NOUNIT2.toString(124.50)); // round to even
+ assertEquals("125",Unit.NOUNIT2.toString(124.55));
+
+ assertEquals("1234",Unit.NOUNIT2.toString(1234.2));
+ assertEquals("1234",Unit.NOUNIT2.toString(1234.5)); // round to even
+ assertEquals("1235",Unit.NOUNIT2.toString(1234.6));
+ assertEquals("1235",Unit.NOUNIT2.toString(1235.2));
+ assertEquals("1236",Unit.NOUNIT2.toString(1235.5)); // round to even
+ assertEquals("1236",Unit.NOUNIT2.toString(1235.6));
+
assertEquals("123457",Unit.NOUNIT2.toString(123456.789));
+
+ assertEquals("1000000",Unit.NOUNIT2.toString(1000000)); // boundary check
+
+ // positive numbers > 1E6
assertEquals("1.23E6",Unit.NOUNIT2.toString(1234567.89));
assertEquals("1.23E7",Unit.NOUNIT2.toString(12345678.9));
+
+
+ }
+
+ @Test
+ public void testNegativeToString() {
+ // very small negative numbers ( < 0.0005) are returned as "0"
assertEquals("0",Unit.NOUNIT2.toString(-0.00040));
- assertEquals("0",Unit.NOUNIT2.toString(-0.00050));
- assertEquals("0",Unit.NOUNIT2.toString(-0.00051));
- assertEquals("0",Unit.NOUNIT2.toString(-0.00060));
- assertEquals("0",Unit.NOUNIT2.toString(-0.0049));
- assertEquals("0",Unit.NOUNIT2.toString(-0.0050));
- assertEquals("-0.01",Unit.NOUNIT2.toString(-0.0051));
- assertEquals("0",Unit.NOUNIT2.toString(-0.00123));
- assertEquals("-0.01",Unit.NOUNIT2.toString(-0.0123));
- assertEquals("-0.12",Unit.NOUNIT2.toString(-0.1234));
- assertEquals("-1.23",Unit.NOUNIT2.toString(-1.2345));
- assertEquals("-12.3",Unit.NOUNIT2.toString(-12.345));
- assertEquals("-123",Unit.NOUNIT2.toString(-123.456));
- assertEquals("-1235",Unit.NOUNIT2.toString(-1234.5678));
- assertEquals("-12346",Unit.NOUNIT2.toString(-12345.6789));
+ assertEquals("0",Unit.NOUNIT2.toString(-0.00050)); // check boundary of change in format
+
+ // negative number < 0.095 use 3 digit decimal format
+ assertEquals("-0.001",Unit.NOUNIT2.toString(-0.00051)); // check boundary of change in format
+ assertEquals("-0.001",Unit.NOUNIT2.toString(-0.00060));
+
+ // rounding at third digit.
+ assertEquals("-0.001",Unit.NOUNIT2.toString(-0.0014));
+ assertEquals("-0.002",Unit.NOUNIT2.toString(-0.0015)); // round to even
+ assertEquals("-0.002",Unit.NOUNIT2.toString(-0.0016));
+ assertEquals("-0.002",Unit.NOUNIT2.toString(-0.0024));
+ assertEquals("-0.002",Unit.NOUNIT2.toString(-0.0025)); // round to even
+ assertEquals("-0.003",Unit.NOUNIT2.toString(-0.0026));
+ assertEquals("-0.009",Unit.NOUNIT2.toString(-0.0094));
+
+ assertEquals("-0.01",Unit.NOUNIT2.toString(-0.0095)); // no trailing zeros after rounding
+
+ assertEquals("-0.011",Unit.NOUNIT2.toString(-0.0114));
+ assertEquals("-0.012",Unit.NOUNIT2.toString(-0.0115)); // round to even
+ assertEquals("-0.012",Unit.NOUNIT2.toString(-0.0119));
+ assertEquals("-0.012",Unit.NOUNIT2.toString(-0.0124));
+ assertEquals("-0.012",Unit.NOUNIT2.toString(-0.0125)); // round to even
+ assertEquals("-0.013",Unit.NOUNIT2.toString(-0.0129));
+
+ assertEquals("-0.095",Unit.NOUNIT2.toString(-0.0949)); // boundary check
+
+ // negative numbers < 100
+ assertEquals("-0.1",Unit.NOUNIT2.toString(-0.095)); // boundary check
+
+ assertEquals("-0.11",Unit.NOUNIT2.toString(-0.111));
+ assertEquals("-0.12",Unit.NOUNIT2.toString(-0.115)); // round to even
+ assertEquals("-0.12",Unit.NOUNIT2.toString(-0.117));
+ assertEquals("-0.12",Unit.NOUNIT2.toString(-0.121));
+ assertEquals("-0.12",Unit.NOUNIT2.toString(-0.125)); // round to even
+ assertEquals("-0.13",Unit.NOUNIT2.toString(-0.127));
+
+ assertEquals("-1.11",Unit.NOUNIT2.toString(-1.113));
+ assertEquals("-1.12",Unit.NOUNIT2.toString(-1.115)); // round to even
+ assertEquals("-1.12",Unit.NOUNIT2.toString(-1.117));
+ assertEquals("-1.12",Unit.NOUNIT2.toString(-1.123));
+ assertEquals("-1.12",Unit.NOUNIT2.toString(-1.125)); // round to even
+ assertEquals("-1.13",Unit.NOUNIT2.toString(-1.127));
+
+ assertEquals("-12.3",Unit.NOUNIT2.toString(-12.320));
+ assertEquals("-12.4",Unit.NOUNIT2.toString(-12.350)); // round to even
+ assertEquals("-12.4",Unit.NOUNIT2.toString(-12.355));
+ assertEquals("-12.4",Unit.NOUNIT2.toString(-12.420));
+ assertEquals("-12.4",Unit.NOUNIT2.toString(-12.450)); // round to even
+ assertEquals("-12.5",Unit.NOUNIT2.toString(-12.455));
+
+ // negative numbers <= 1E6
+ assertEquals("-123",Unit.NOUNIT2.toString(-123.20));
+ assertEquals("-124",Unit.NOUNIT2.toString(-123.50)); // round to even
+ assertEquals("-124",Unit.NOUNIT2.toString(-123.55));
+ assertEquals("-124",Unit.NOUNIT2.toString(-124.20));
+ assertEquals("-124",Unit.NOUNIT2.toString(-124.50)); // round to even
+ assertEquals("-125",Unit.NOUNIT2.toString(-124.55));
+
+ assertEquals("-1234",Unit.NOUNIT2.toString(-1234.2));
+ assertEquals("-1234",Unit.NOUNIT2.toString(-1234.5)); // round to even
+ assertEquals("-1235",Unit.NOUNIT2.toString(-1234.6));
+ assertEquals("-1235",Unit.NOUNIT2.toString(-1235.2));
+ assertEquals("-1236",Unit.NOUNIT2.toString(-1235.5)); // round to even
+ assertEquals("-1236",Unit.NOUNIT2.toString(-1235.6));
+
assertEquals("-123457",Unit.NOUNIT2.toString(-123456.789));
+
+ assertEquals("-1000000",Unit.NOUNIT2.toString(-1000000)); // boundary check
+
+ // negative numbers > 1E6
assertEquals("-1.23E6",Unit.NOUNIT2.toString(-1234567.89));
assertEquals("-1.23E7",Unit.NOUNIT2.toString(-12345678.9));
-
+
+
}
+
+
}