Add more status methods

Add `#closing?`, `#closed?` and aliases `#open?` -> `#connected?`.

lib/bunny_mock/session.rb

@@ -51,7 +51,6 @@ def start
     # @return [BunnyMock::Session] self
     # @api public
     def stop
-
       @status = :closed
 
       self
@@ -64,9 +63,27 @@ def stop
     # @return [Boolean] true if status is connected, false otherwise
     # @api public
     def open?
-
       @status == :connected
     end
+    alias connected? open?
+
+    ##
+    # Tests if connection is closed
+    #
+    # @return [Boolean] true if status is closed, false otherwise
+    # @api public
+    def closed?
+      @status == :closed
+    end
+
+    ##
+    # Tests if connection is closing
+    #
+    # @return [Boolean] true if status is closing, false otherwise
+    # @api public
+    def closing?
+      @status == :closing
+    end
 
     ##
     # Creates a new {BunnyMock::Channel} instance

spec/unit/bunny_mock/session_spec.rb

@@ -26,7 +26,7 @@
     end
   end
 
-  context '#open?' do
+  context '#open? (connected?)' do
 
     it 'should return true if status is open' do
       @session.start
@@ -45,8 +45,69 @@
     end
   end
 
-  context '#create_channel (channel)' do
+  describe '#closed?' do
+    context 'with `not_connected` status' do
+      it do
+        expect(@session.closed?).to be_falsey
+      end
+    end
+
+    context 'with `connected` status' do
+      it do
+        @session.start
+        expect(@session.closed?).to be_falsey
+      end
+    end
+
+    context 'with `closing` status' do
+      it do
+        # Mock `closing` status
+        @session.instance_variable_set('@status', :closing)
+        expect(@session.closed?).to be_falsey
+      end
+    end
 
+    context 'with `closed` status' do
+      it do
+        @session.start
+        @session.close
+        expect(@session.closed?).to be_truthy
+      end
+    end
+  end
+
+  describe '#closing?' do
+    context 'with `not_connected` status' do
+      it do
+        expect(@session.closing?).to be_falsey
+      end
+    end
+
+    context 'with `connected` status' do
+      it do
+        @session.start
+        expect(@session.closing?).to be_falsey
+      end
+    end
+
+    context 'with `closing` status' do
+      it do
+        # Mock `closing` status
+        @session.instance_variable_set('@status', :closing)
+        expect(@session.closing?).to be_truthy
+      end
+    end
+
+    context 'with `closed` status' do
+      it do
+        @session.start
+        @session.close
+        expect(@session.closing?).to be_falsey
+      end
+    end
+  end
+
+  context '#create_channel (channel)' do
     it 'should create a new channel with no arguments' do
       first = @session.create_channel
       second = @session.create_channel