Accept constraints in URI assert without hostnames or protocols

src/asserts/uri-assert.js

@@ -4,6 +4,7 @@
  * Module dependencies.
  */
 
+const _ = require('lodash');
 const { Validator, Violation } = require('validator.js');
 const { forEach, has } = require('lodash');
 
@@ -52,7 +53,7 @@ module.exports = function uriAssert(constraints) {
     const uri = new URI(value);
 
     // URIs must have at least a hostname and protocol.
-    if (!uri.hostname() || !uri.protocol()) {
+    if (_.isEmpty(this.constraints) && (!uri.hostname() || !uri.protocol())) {
       throw new Violation(this, value, { constraints: this.constraints });
     }
 

test/asserts/uri-assert.test.js

@@ -106,6 +106,10 @@ describe('UriAssert', () => {
     }
   });
 
+  it('should accept an `is` constraint without a hostname or protocol', () => {
+    Assert.uri({ is: 'relative' }).validate('/dashboard');
+  });
+
   it('should accept an uri that matches the constraints', () => {
     Assert.uri({ is: 'domain' }).validate('https://foobar.com');
     Assert.uri({ protocol: 'https' }).validate('https://foobar.com');