fix round internal integer (#332)

Author: Eomm

index.js

@@ -752,7 +752,7 @@ function buildCode (location, code, laterCode, name) {
         `
       } else {
         code += `
-            var t = Number(obj[${sanitized}])
+            var t = $asInteger(obj[${sanitized}])
             if (!isNaN(t)) {
               ${addComma}
               json += ${asString} + ':' + t

test/integer.test.js

@@ -137,3 +137,15 @@ if (semver.gt(process.versions.node, '10.3.0')) {
   t.pass('Skip because Node version < 10.4')
   t.end()
 }
+
+test('should round interger object parameter ', t => {
+  t.plan(2)
+
+  const schema = { type: 'object', properties: { magic: { type: 'integer' } } }
+  const validate = validator(schema)
+  const stringify = build(schema, { rounding: 'ceil' })
+  const output = stringify({ magic: 4.2 })
+
+  t.equal(output, '{"magic":5}')
+  t.ok(validate(JSON.parse(output)), 'valid schema')
+})