Reuse bundle path in command tests. (#56)

Author: samuel-williams-shopify

.gitignore

@@ -2,6 +2,7 @@
 /.context
 /.bundle
 /pkg
+/vendor
 /gems.locked
 /.covered.db
 /external

test/utopia/command.rb

@@ -27,6 +27,10 @@ def group_rw(path)
 
 	REQUIRED_GEMS = ["bake", "bake-test", "sus", "covered", "rack-test", "sus-fixtures-async-http", "falcon", "net-smtp", "benchmark-http", "protocol-rack"]
 
+	def bundle_path
+		File.join(utopia_path, "vendor/bundle")
+	end
+	
 	def install_packages(dir)
 		gems_path = File.join(dir, "gems.rb")
 		File.open(gems_path, "w") do |file|
@@ -37,7 +41,7 @@ def install_packages(dir)
 			end
 		end
 
-		system("bundle", "config", "set", "path", "vendor/bundle", chdir: dir)
+		system("bundle", "config", "set", "path", bundle_path, chdir: dir)
 		system("bundle", "install", chdir: dir)
 	end