生日转星座的java代码（附单元测试）

星座的枚举类
ConstellationUtil .java

public class ConstellationUtil {

	public enum Constellation {
		Capricorn(1, "摩羯座"), Aquarius(2, "水瓶座"), Pisces(3, "双鱼座"), Aries(4, "白羊座"), Taurus(5, "金牛座"), Gemini(6, "双子座"), Cancer(
				7, "巨蟹座"), Leo(8, "狮子座"), Virgo(9, "处女座"), Libra(10, "天秤座"), Scorpio(11, "天蝎座"), Sagittarius(12, "射手座");

		private int code;
		private String chineseName;

		private Constellation(int code, String chineseName) {
			this.code = code;
			this.chineseName = chineseName;
		}

		public int getCode() {
			return this.code;
		}

		public String getChineseName() {
			return this.chineseName;
		}
	}

	public static final Constellation[] constellationArr = { Constellation.Aquarius, Constellation.Pisces,
			Constellation.Aries, Constellation.Taurus, Constellation.Gemini, Constellation.Cancer, Constellation.Leo,
			Constellation.Virgo, Constellation.Libra, Constellation.Scorpio, Constellation.Sagittarius,
			Constellation.Capricorn };

	public static final int[] constellationEdgeDay = { 21, 20, 21, 21, 22, 22, 23, 24, 24, 24, 23, 22 };

	public static int calculateConstellation(String birthday) {
		if (birthday == null || birthday.trim().length() == 0)
			throw new IllegalArgumentException("the birthday can not be null");
		String[] birthdayElements = birthday.split("-");
		if (birthdayElements.length != 3)
			throw new IllegalArgumentException("the birthday form is not invalid");
		int month = Integer.parseInt(birthdayElements[1]);
		int day = Integer.parseInt(birthdayElements[2]);
		if (month == 0 || day == 0 || month > 12)
			return 0;
		month = day < constellationEdgeDay[month - 1] ? month - 1 : month;
		return month > 0 ? constellationArr[month - 1].getCode() : constellationArr[11].getCode();
	}
}

测试ConstellationUtil 单元测试

public class TestConstellationUtil extends BaseTestCase {

	protected void setUp() throws Exception {
		super.setUp();
	}

	protected void tearDown() throws Exception {
		super.tearDown();
	}

	public void testCalculateConstellation() {
		assertEquals(Constellation.Capricorn.getCode(), ConstellationUtil.calculateConstellation("1986-12-22"));
		assertEquals(Constellation.Capricorn.getCode(), ConstellationUtil.calculateConstellation("1986-12-25"));
		assertEquals(Constellation.Capricorn.getCode(), ConstellationUtil.calculateConstellation("1986-01-20"));

		assertEquals(Constellation.Aquarius.getCode(), ConstellationUtil.calculateConstellation("1986-01-21"));
		assertEquals(Constellation.Aquarius.getCode(), ConstellationUtil.calculateConstellation("1986-02-18"));
		assertEquals(Constellation.Aquarius.getCode(), ConstellationUtil.calculateConstellation("1986-02-19"));

		assertEquals(Constellation.Pisces.getCode(), ConstellationUtil.calculateConstellation("1986-02-20"));
		assertEquals(Constellation.Pisces.getCode(), ConstellationUtil.calculateConstellation("1986-02-26"));
		assertEquals(Constellation.Pisces.getCode(), ConstellationUtil.calculateConstellation("1986-03-20"));

		assertEquals(Constellation.Aries.getCode(), ConstellationUtil.calculateConstellation("1986-03-21"));
		assertEquals(Constellation.Aries.getCode(), ConstellationUtil.calculateConstellation("1986-03-25"));
		assertEquals(Constellation.Aries.getCode(), ConstellationUtil.calculateConstellation("1986-04-20"));

		assertEquals(Constellation.Taurus.getCode(), ConstellationUtil.calculateConstellation("1986-04-21"));
		assertEquals(Constellation.Taurus.getCode(), ConstellationUtil.calculateConstellation("1986-05-10"));
		assertEquals(Constellation.Taurus.getCode(), ConstellationUtil.calculateConstellation("1986-05-21"));

		assertEquals(Constellation.Gemini.getCode(), ConstellationUtil.calculateConstellation("1986-05-22"));
		assertEquals(Constellation.Gemini.getCode(), ConstellationUtil.calculateConstellation("1986-05-25"));
		assertEquals(Constellation.Gemini.getCode(), ConstellationUtil.calculateConstellation("1986-06-21"));

		assertEquals(Constellation.Cancer.getCode(), ConstellationUtil.calculateConstellation("1986-06-22"));
		assertEquals(Constellation.Cancer.getCode(), ConstellationUtil.calculateConstellation("1986-06-28"));
		assertEquals(Constellation.Cancer.getCode(), ConstellationUtil.calculateConstellation("1986-07-22"));

		assertEquals(Constellation.Leo.getCode(), ConstellationUtil.calculateConstellation("1986-07-23"));
		assertEquals(Constellation.Leo.getCode(), ConstellationUtil.calculateConstellation("1986-07-30"));
		assertEquals(Constellation.Leo.getCode(), ConstellationUtil.calculateConstellation("1986-08-23"));

		assertEquals(Constellation.Virgo.getCode(), ConstellationUtil.calculateConstellation("1986-08-24"));
		assertEquals(Constellation.Virgo.getCode(), ConstellationUtil.calculateConstellation("1986-09-21"));
		assertEquals(Constellation.Virgo.getCode(), ConstellationUtil.calculateConstellation("1986-09-23"));

		assertEquals(Constellation.Libra.getCode(), ConstellationUtil.calculateConstellation("1986-09-24"));
		assertEquals(Constellation.Libra.getCode(), ConstellationUtil.calculateConstellation("1986-10-21"));
		assertEquals(Constellation.Libra.getCode(), ConstellationUtil.calculateConstellation("1986-10-23"));

		assertEquals(Constellation.Scorpio.getCode(), ConstellationUtil.calculateConstellation("1986-10-24"));
		assertEquals(Constellation.Scorpio.getCode(), ConstellationUtil.calculateConstellation("1986-11-21"));
		assertEquals(Constellation.Scorpio.getCode(), ConstellationUtil.calculateConstellation("1986-11-22"));

		assertEquals(Constellation.Sagittarius.getCode(), ConstellationUtil.calculateConstellation("1986-11-23"));
		assertEquals(Constellation.Sagittarius.getCode(), ConstellationUtil.calculateConstellation("1986-11-28"));
		assertEquals(Constellation.Sagittarius.getCode(), ConstellationUtil.calculateConstellation("1986-12-21"));
	}
}

评论

3 楼 luckaway 2011-01-05  

我已经改回来了！

2 楼 luckaway 2011-01-05  

飞天奔月 写道

ParamInvalidException 是自定义的异常?

是自定义的，正确的做法，应该用JDK的标准异常--IllegalArgumentException

1 楼 飞天奔月 2011-01-05  

ParamInvalidException 是自定义的异常?