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unexpected double behavior

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stleary 2015-06-17 02:59:43 -05:00
parent 994a19b831
commit 0640856462
1 changed files with 27 additions and 0 deletions
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27
JSONObjectTest.java
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@ -604,6 +604,33 @@ public class JSONObjectTest {
exceptionCount == tryCount); exceptionCount == tryCount);
} }
@Test
public void unexpectedDoubleToIntConversion() {
/**
* This test documents an unexpected numeric behavior.
* A double that ends with .0 is parsed, serialized, then
* parsed again. On the second parse, it has become an int.
*/
String key30 = "key30";
String key31 = "key31";
JSONObject jsonObject = new JSONObject();
jsonObject.put(key30, new Double(3.0));
jsonObject.put(key31, new Double(3.1));
assertTrue("3.0 should remain a double",
jsonObject.getDouble(key30) == 3);
assertTrue("3.1 should remain a double",
jsonObject.getDouble(key31) == 3.1);
// turns 3.0 into 3.
String serializedString = jsonObject.toString();
JSONObject deserialized = new JSONObject(serializedString);
assertTrue("3.0 is now an int", deserialized.get(key30) instanceof Integer);
assertTrue("3.0 can still be interpreted as a double",
deserialized.getDouble(key30) == 3.0);
assertTrue("3.1 remains a double", deserialized.getDouble(key31) == 3.1);
}
/** /**
* The purpose for the static method getNames() methods are not clear. * The purpose for the static method getNames() methods are not clear.
* This method is not called from within JSON-Java. Most likely * This method is not called from within JSON-Java. Most likely