Add rspec coverage for getg (and set/setg, in a way)

spec/lib/msf/ui/console/command_dispatcher/core_spec.rb

@@ -117,7 +117,7 @@ describe Msf::Ui::Console::CommandDispatcher::Core do
           mod
         end
 
-        it "should show an empty value if not set in the framework or module" do
+        it "should show no value if not set in the framework or module" do
           allow(core).to receive(:active_module).and_return(mod)
           allow(driver).to receive(:on_variable_set).and_return(true)
           core.cmd_get(name)
@@ -154,4 +154,60 @@ describe Msf::Ui::Console::CommandDispatcher::Core do
       end
     end
   end
+
+  describe "#cmd_getg" do
+    describe "without arguments" do
+      it "should show a help message" do
+        core.cmd_getg
+        @output.join.should =~ /Usage: getg /
+      end
+    end
+
+    describe "with arguments" do
+      let(:name) { ::Rex::Text.rand_text_alpha(10).upcase }
+
+      context "with an active module" do
+        let(:mod) do
+          mod = ::Msf::Module.new
+          mod.send(:initialize, {})
+          mod
+        end
+
+        it "should show no value if not set in the framework or module" do
+          allow(core).to receive(:active_module).and_return(mod)
+          allow(driver).to receive(:on_variable_set).and_return(true)
+          core.cmd_getg(name)
+          @output.join.should =~ /^#{name} => $/
+        end
+
+        it "should show no value when only the module has this variable" do
+          allow(core).to receive(:active_module).and_return(mod)
+          allow(driver).to receive(:on_variable_set).and_return(true)
+          core.cmd_set(name, 'MODULE')
+          @output = []
+          core.cmd_getg(name)
+          @output.join.should =~ /^#{name} => $/
+        end
+
+        it "should show the framework's value when only the framework has this variable" do
+          allow(core).to receive(:active_module).and_return(mod)
+          allow(driver).to receive(:on_variable_set).and_return(true)
+          core.cmd_setg(name, 'FRAMEWORK')
+          @output = []
+          core.cmd_getg(name)
+          @output.join.should =~ /^#{name} => FRAMEWORK$/
+        end
+
+        it "should show the framework's value when both the module and the framework have this variable" do
+          allow(core).to receive(:active_module).and_return(mod)
+          allow(driver).to receive(:on_variable_set).and_return(true)
+          core.cmd_setg(name, 'FRAMEWORK')
+          core.cmd_set(name, 'MODULE')
+          @output = []
+          core.cmd_getg(name)
+          @output.join.should =~ /^#{name} => FRAMEWORK$/
+        end
+      end
+    end
+  end
 end