Merge pull request #111 from yui-knk/use_tmpdir

Stop creating parser file on top directory

spec/lrama/command_spec.rb

@@ -1,9 +1,14 @@
+require "tmpdir"
+
 RSpec.describe Lrama::Command do
   describe "#run" do
+    let(:outfile) { File.join(Dir.tmpdir, "parse.c") }
+    let(:o_option) { ["-o", "#{outfile}"] }
+
     describe "a grammar file is specified" do
       it "ends successfully" do
         command = Lrama::Command.new
-        expect(command.run([fixture_path("command/basic.y")])).to be_nil
+        expect(command.run(o_option + [fixture_path("command/basic.y")])).to be_nil
       end
     end
 
@@ -12,7 +17,7 @@
         File.open(fixture_path("command/basic.y")) do |f|
           allow(STDIN).to receive(:read).and_return(f.read)
           command = Lrama::Command.new
-          expect(command.run(["-", "test.y"])).to be_nil
+          expect(command.run(o_option + ["-", "test.y"])).to be_nil
         end
       end
     end