Add some new tests

Rakefile

@@ -10,3 +10,18 @@ task :default do
     Process.waitpid(pid)
   end
 end
+
+task :scenario do
+  root_path = File.expand_path "../.", __FILE__
+  Dir["#{root_path}/tests/scenario/*_comment_test.sh"].each do |test|
+    name = File.basename(test)
+    puts "Running scenario #{name}..."
+    Dir.mktmpdir("gvm-test") do |tmpdir|
+      install = `binscripts/gvm-installer binary_default #{tmpdir}`
+      pid = fork do
+        exec("bash -c 'source #{tmpdir}/gvm/scripts/gvm; tf --text #{tmpdir}/gvm/tests/scenario/#{name}'")
+      end
+      Process.waitpid(pid)
+    end
+  end
+end

tests/scenario/gvm_install_1.2.2_binary_comment_test.sh

@@ -0,0 +1 @@
+gvm install go1.2.2 --binary #status=0

tests/scenario/gvm_install_1.2.2_comment_test.sh

@@ -0,0 +1 @@
+gvm install go1.2.2 #status=0