1 files changed, 19 insertions, 3 deletions
diff --git a/activesupport/test/core_ext/object/to_query_test.rb b/activesupport/test/core_ext/object/to_query_test.rb
index f887a9e613..09cab3ed35 100644
--- a/activesupport/test/core_ext/object/to_query_test.rb
+++ b/activesupport/test/core_ext/object/to_query_test.rb
@@ -46,19 +46,35 @@ class ToQueryTest < ActiveSupport::TestCase
       :person => {:id => [20, 10]}
   end
 
+  def test_empty_array
+    assert_equal "person%5B%5D=", [].to_query('person')
+  end
+
   def test_nested_empty_hash
     assert_equal '',
       {}.to_query
-    assert_query_equal 'a=1&b%5Bc%5D=3&b%5Bd%5D=',
+    assert_query_equal 'a=1&b%5Bc%5D=3',
       { a: 1, b: { c: 3, d: {} } }
+    assert_query_equal '',
+      { a: {b: {c: {}}} }
     assert_query_equal 'b%5Bc%5D=false&b%5Be%5D=&b%5Bf%5D=&p=12',
       { p: 12, b: { c: false, e: nil, f: '' } }
-    assert_query_equal 'b%5Bc%5D=3&b%5Bf%5D=&b%5Bk%5D=',
+    assert_query_equal 'b%5Bc%5D=3&b%5Bf%5D=',
       { b: { c: 3, k: {}, f: '' } }
-    assert_query_equal 'a%5B%5D=&b=3',
+    assert_query_equal 'b=3',
       {a: [], b: 3}
   end
 
+  def test_hash_with_namespace
+    hash = { name: 'Nakshay', nationality: 'Indian' }
+    assert_equal "user%5Bname%5D=Nakshay&user%5Bnationality%5D=Indian", hash.to_query('user')
+  end
+
+  def test_hash_sorted_lexicographically
+    hash = { type: 'human', name: 'Nakshay' }
+    assert_equal "name=Nakshay&type=human", hash.to_query
+  end
+
   private
     def assert_query_equal(expected, actual)
       assert_equal expected.split('&'), actual.to_query.split('&')