Simplified some of the formatting routines in IsoType, using String.format(). Added unit tests to check that the new formatting code works fine.

git-svn-id: https://j8583.svn.sourceforge.net/svnroot/j8583/j8583@69 db60a039-f72e-0410-b1d2-baa000846441

src/test/java/j8583/TestFormats.java

@@ -0,0 +1,44 @@
+package j8583;
+
+import java.math.BigDecimal;
+import java.util.Date;
+
+import org.junit.Test;
+
+import com.solab.iso8583.IsoType;
+
+/** Tests formatting of certain IsoTypes.
+ * 
+ * @author Enrique Zamudio
+ */
+public class TestFormats {
+
+	private Date date = new Date(96867296000l);
+
+	@Test
+	public void testDateFormats() {
+		assert IsoType.DATE10.format(date).equals("0125213456");
+		assert IsoType.DATE4.format(date).equals("0125");
+		assert IsoType.DATE_EXP.format(date).equals("7301");
+		assert IsoType.TIME.format(date).equals("213456");
+	}
+
+	@Test
+	public void testNumericFormats() {
+		assert IsoType.NUMERIC.format(123, 6).equals("000123");
+		assert IsoType.NUMERIC.format("hola", 6).equals("00hola");
+		assert IsoType.AMOUNT.format(12345, 0).equals("000001234500");
+		assert IsoType.AMOUNT.format(new BigDecimal("12345.67"), 0).equals("000001234567");
+		assert IsoType.AMOUNT.format("1234.56", 0).equals("000000123456");
+	}
+
+	@Test
+	public void testStringFormats() {
+		assert IsoType.ALPHA.format("hola", 3).equals("hol");
+		assert IsoType.ALPHA.format("hola", 4).equals("hola");
+		assert IsoType.ALPHA.format("hola", 6).equals("hola  ");
+		assert IsoType.LLVAR.format("hola", 0).equals("hola");
+		assert IsoType.LLLVAR.format("hola", 0).equals("hola");
+	}
+
+}