Fixed floating point errors with "divisibleBy" attribute.

CHANGELOG.md

@@ -3,6 +3,9 @@
 ## 4.0 (2011/08/22)
 
 *	Added referencing to JSONSchema, allows for soft-linking to other schemas.
+*	Environment option "validateReferences" now validates references at validation time for any environment.
+*	Environment option "enforceReferences" will cause invalid references to throw an error at creation time for any environment.
+*	Fixed floating point errors with "divisibleBy" attribute.
 *	Fixed typo in JSV.clone.
 *	Fixed typo in draft-03 hyper-schema.json.
 *	Updated uri.js to latest version.

README.md

@@ -9,7 +9,7 @@ JSV is a JavaScript implementation of a extendable, fully compliant JSON Schema
 *	Provides an intuitive API for creating new validating schema attributes, or whole new custom schema schemas.
 *	Supports `self`, `full` and `describedby` hyper links.
 *	Validates itself, and is bootstrapped from the JSON Schema schemas.
-*	Includes over 170 unit tests for testing all parts of the specifications.
+*	Includes over 1100 unit tests for testing all parts of the specifications.
 *	Works in all ECMAScript 3 environments, including all web browsers and Node.js.
 *	Licensed under the FreeBSD License, a very open license.
 

lib/json-schema-draft-03.js

@@ -1080,13 +1080,18 @@
 				},
 
 				"validator" : function (instance, schema, self, report, parent, parentSchema, name) {
-					var divisor;
+					var divisor, value, digits;
 					if (instance.getType() === "number") {
 						divisor = schema.getAttribute("divisibleBy");
 						if (divisor === 0) {
 							report.addError(instance, schema, "divisibleBy", "Nothing is divisible by 0", divisor);
-						} else if (divisor !== 1 && ((instance.getValue() / divisor) % 1) !== 0) {
-							report.addError(instance, schema, "divisibleBy", "Number is not divisible by " + divisor, divisor);
+						} else if (divisor !== 1) {
+							value = instance.getValue();
+							digits = Math.max((value.toString().split(".")[1] || " ").length, (divisor.toString().split(".")[1] || " ").length);
+							digits = parseFloat(((value / divisor) % 1).toFixed(digits));  //cut out floating point errors
+							if (0 < digits && digits < 1) {
+								report.addError(instance, schema, "divisibleBy", "Number is not divisible by " + divisor, divisor);
+							}
 						}
 					}
 				}

tests/tests3.js

@@ -378,6 +378,7 @@ test("DivisibleBy Validation", function () {
 	equal(env.validate(0, { divisibleBy : 2.5 }).errors.length, 0);
 	equal(env.validate(5, { divisibleBy : 2.5 }).errors.length, 0);
 	equal(env.validate(7.5, { divisibleBy : 2.5 }).errors.length, 0);
+	equal(env.validate(9.1, { divisibleBy : 1.3 }).errors.length, 0);
 
 	notEqual(env.validate(0, { divisibleBy : 0 }).errors.length, 0);
 	notEqual(env.validate(7, { divisibleBy : 5 }).errors.length, 0);