fix tests in jruby

Author: scambra

test/bridges/bridge_test.rb

@@ -10,7 +10,7 @@ def setup
   def teardown; end
 
   def test__shouldnt_throw_errors
-    ActiveScaffold::Bridges.run_all
+    assert_nothing_raised { ActiveScaffold::Bridges.run_all }
   end
 
   def test__file_column_bridge

test/misc/finder_test.rb

@@ -33,7 +33,7 @@ def test_create_conditions_for_columns
 
   def test_method_sorting
     column = ActiveScaffold::DataStructures::Column.new('a', ModelStub)
-    column.sort_by method: proc { self }
+    column.sort_by method: proc { itself }
 
     collection = [16_000, 2853, 98_765, 6188, 4]
     assert_equal collection.sort, @klass.send(:sort_collection_by_column, collection, column, 'asc')
@@ -43,7 +43,7 @@ def test_method_sorting
     result = @klass.send(:sort_collection_by_column, collection, column, 'asc')
     assert_equal [nil, 'a', 'b'], result
 
-    column.sort_by method: 'self'
+    column.sort_by method: 'itself'
     collection = [3, 1, 2]
     assert_equal collection.sort, @klass.send(:sort_collection_by_column, collection, column, 'asc')
   end