spec/lib/configuration_spec.rb in gem_config-0.2.4 vs spec/lib/configuration_spec.rb in gem_config-0.3.0

@@ -2,10 +2,11 @@
 
 describe GemConfig::Configuration do
   subject do
     GemConfig::Configuration.new.tap do |configuration|
       configuration.rules.has :foo, default: 'bar'
+      configuration.rules.has :bar
       configuration.rules.has :count
       configuration.rules.has :api_key, default: 'foobarbaz'
       configuration.foo   = 'pelle'
       configuration.count = 123
       configuration
@@ -28,10 +29,32 @@
     it 'resets the configuration' do
       subject.tap(&:reset).current.should eq(foo: 'bar', count: nil, api_key: 'foobarbaz')
     end
   end
 
+  describe '#unset' do
+    context 'with an existing key' do
+      context 'when that key has not been set' do
+        it 'doesnt change anything' do
+          expect { subject.unset(:bar) }.to_not change { subject.bar }
+        end
+      end
+
+      context 'when that key has been set' do
+        it 'unsets the key' do
+          expect { subject.unset(:count) }.to change { subject.count }.from(123).to(nil)
+        end
+      end
+    end
+
+    context 'with a non-existing key' do
+      it 'raises an exception' do
+        expect { subject.unset(:pelle) }.to raise_error(GemConfig::InvalidKeyError)
+      end
+    end
+  end
+
   describe 'setting a configuration option' do
     it 'checks if the value is allowed' do
       subject.rules.should_receive :check, with: [:foo, 'bar']
       subject.foo = 'bar'
     end
@@ -42,14 +65,14 @@
         subject.foo = 'bar'
       end.to change { subject.foo }.from('pelle').to('bar')
     end
 
     it 'does not set the configuration option if the value is not allowed' do
-      subject.rules.stub(:check, with: [:foo, 'bar']).and_raise(GemConfig::Rules::InvalidKeyError)
+      subject.rules.stub(:check, with: [:foo, 'bar']).and_raise(GemConfig::InvalidKeyError)
       expect do
         begin
           subject.foo = 'bar'
-        rescue GemConfig::Rules::InvalidKeyError
+        rescue GemConfig::InvalidKeyError
         end
       end.to_not change { subject.foo }.from('bar')
     end
   end