1 files changed, 18 insertions, 0 deletions
diff --git a/spec/integration/rails/integration_spec.rb b/spec/integration/rails/integration_spec.rb
index 9b150a2..dc1d670 100644
--- a/spec/integration/rails/integration_spec.rb
+++ b/spec/integration/rails/integration_spec.rb
@@ -19,6 +19,24 @@ RSpec.describe 'rails', type: :request do
     expect(Hashie.logger).to eq(Rails.logger)
   end
 
+  context '#except' do
+    subject { Hashie::Mash.new(x: 1, y: 2) }
+
+    it 'returns an instance of the class it was called on' do
+      class HashieKlass < Hashie::Mash; end
+      hashie_klass = HashieKlass.new(subject)
+      expect(hashie_klass.except('x')).to be_a HashieKlass
+    end
+
+    it 'works with string keys' do
+      expect(subject.except('x')).to eq Hashie::Mash.new(y: 2)
+    end
+
+    it 'works with symbol keys' do
+      expect(subject.except(:x)).to eq Hashie::Mash.new(y: 2)
+    end
+  end
+
   it 'works' do
     get '/'
     assert_select 'h1', 'Hello, world!'