svn commit: r1408359 - /commons/proper/lang/trunk/src/test/java/org/apache/commons/lang3/math/NumberUtilsTest.java

[sebb]

Author: sebb
Date: Mon Nov 12 17:13:37 2012
New Revision: 1408359

URL: http://svn.apache.org/viewvc?rev=1408359&view=rev
Log:
Add tests to show magnitude boundary between Float, Double and BigDecimal

Modified:
    
commons/proper/lang/trunk/src/test/java/org/apache/commons/lang3/math/NumberUtilsTest.java

Modified: 
commons/proper/lang/trunk/src/test/java/org/apache/commons/lang3/math/NumberUtilsTest.java
URL: 
http://svn.apache.org/viewvc/commons/proper/lang/trunk/src/test/java/org/apache/commons/lang3/math/NumberUtilsTest.java?rev=1408359&r1=1408358&r2=1408359&view=diff
==============================================================================
--- 
commons/proper/lang/trunk/src/test/java/org/apache/commons/lang3/math/NumberUtilsTest.java
 (original)
+++ 
commons/proper/lang/trunk/src/test/java/org/apache/commons/lang3/math/NumberUtilsTest.java
 Mon Nov 12 17:13:37 2012
@@ -245,6 +245,20 @@ public class NumberUtilsTest {
         }
     }
 
+    // Tests to show when magnitude causes switch to next Number type
+    // Will probably need to be adjusted if code is changed to check precision 
(LANG-693)
+    @Test
+    public void testCreateNumberMagnitude() {
+        // Test Float.MAX_VALUE, and same with +1 in final digit to check 
conversion changes to next Number type
+        assertEquals(Float.class,  
NumberUtils.createNumber("3.4028235e+38").getClass());
+        assertEquals(Double.class, 
NumberUtils.createNumber("3.4028236e+38").getClass());
+
+        // Test Double.MAX_VALUE
+        assertEquals(Double.class,     
NumberUtils.createNumber("1.7976931348623157e+308").getClass());
+        // Test with +2 in final digit (+1 does not cause roll-over to 
BigDecimal)
+        assertEquals(BigDecimal.class, 
NumberUtils.createNumber("1.7976931348623159e+308").getClass());
+    }
+
     @Test
     public void testCreateFloat() {
         assertEquals("createFloat(String) failed", Float.valueOf("1234.5"), 
NumberUtils.createFloat("1234.5"));