handle negative integers (#325)

Author: shmax

src/JsonSchema/Constraints/ObjectConstraint.php

@@ -184,7 +184,7 @@ protected function toNumber($value)
 
     protected function toInteger($value)
     {
-        if(ctype_digit ($value)) {
+        if(is_numeric($value) && (int)$value == $value) {
             return (int)$value; // cast to number
         }
 

tests/Constraints/CoerciveTest.php

@@ -56,12 +56,23 @@ public function testValidCoerceCases($input, $schema, $errors = array())
 
         $this->assertTrue(gettype($value->number) == "double");
         $this->assertTrue(gettype($value->integer) == "integer");
+        $this->assertTrue(gettype($value->negativeInteger) == "integer");
         $this->assertTrue(gettype($value->boolean) == "boolean");
 
+        $this->assertTrue($value->number === 1.5);
+        $this->assertTrue($value->integer === 1);
+        $this->assertTrue($value->negativeInteger === -2);
+        $this->assertTrue($value->boolean === true);
+
         $this->assertTrue(gettype($value->multitype1) == "boolean");
         $this->assertTrue(gettype($value->multitype2) == "double");
         $this->assertTrue(gettype($value->multitype3) == "integer");
 
+        $this->assertTrue($value->number === 1.5);
+        $this->assertTrue($value->integer === 1);
+        $this->assertTrue($value->negativeInteger === -2);
+        $this->assertTrue($value->boolean === true);
+
         $this->assertTrue($validator->isValid(), print_r($validator->getErrors(), true));
     }
 
@@ -111,6 +122,7 @@ public function getValidCoerceTests()
                   "string":"string test",
                   "number":"1.5",
                   "integer":"1",
+                  "negativeInteger":"-2",
                   "boolean":"true",
                   "object":{},
                   "array":[],
@@ -132,6 +144,7 @@ public function getValidCoerceTests()
                     "string":{"type":"string"},
                     "number":{"type":"number"},
                     "integer":{"type":"integer"},
+                    "negativeInteger":{"type":"integer"},
                     "boolean":{"type":"boolean"},
                     "object":{"type":"object"},
                     "array":{"type":"array"},