diff --git a/spec/lrama/new_parser_spec.rb b/spec/lrama/new_parser_spec.rb
deleted file mode 100644
index 95cbb166..00000000
--- a/spec/lrama/new_parser_spec.rb
+++ /dev/null
@@ -1,47 +0,0 @@
-RSpec.describe Lrama::NewParser do
-  describe '#parse' do
-    subject { described_class.new(grammar).parse }
-
-    describe 'sample/calc.y' do
-      let(:grammar) { File.read('sample/calc.y') }
-
-      it 'returns the same results as Lrama::Parser' do
-        expected = Lrama::Parser.new(grammar).parse
-
-        expect(subject.aux.prologue_first_lineno).to eq(expected.aux.prologue_first_lineno)
-        expect(subject.aux.prologue.strip).to eq(expected.aux.prologue.strip)
-        expect(subject.union.code).to eq(expected.union.code)
-        expect(subject.union.lineno).to eq(expected.union.lineno)
-        expect(subject.union).to eq(expected.union)
-        expect(subject.types).to eq(expected.types)
-        subject.instance_variable_get(:@_rules).each_with_index {|rule, id| expect(rule).to eq(expected.instance_variable_get(:@_rules)[id]) }
-        expect(subject.instance_variable_get(:@_rules)).to eq(expected.instance_variable_get(:@_rules))
-        expect(subject.aux.epilogue_first_lineno).to eq(expected.aux.epilogue_first_lineno)
-        expect(subject.aux.epilogue.strip).to eq(expected.aux.epilogue.strip)
-
-        subject.rules.each_with_index {|rule, i| expect(rule).to eq(expected.rules[i]) }
-      end
-    end
-
-    describe 'sample/ruby_parse.y' do
-      let(:grammar) { File.read('sample/ruby_parse.y') }
-
-      it 'returns the same results as Lrama::Parser' do
-        expected = Lrama::Parser.new(grammar).parse
-
-        expect(subject.aux.prologue_first_lineno).to eq(expected.aux.prologue_first_lineno)
-        expect(subject.aux.prologue.strip).to eq(expected.aux.prologue.strip)
-        expect(subject.union.code).to eq(expected.union.code)
-        expect(subject.union.lineno).to eq(expected.union.lineno)
-        expect(subject.union).to eq(expected.union)
-        expect(subject.types).to eq(expected.types)
-        subject.instance_variable_get(:@_rules).each_with_index {|rule, id| expect(rule[0..1]).to eq(expected.instance_variable_get(:@_rules)[id][0..1]) }
-        expect(subject.instance_variable_get(:@_rules).map { _1[0..1] }).to eq(expected.instance_variable_get(:@_rules).map { _1[0..1] })
-        expect(subject.aux.epilogue_first_lineno).to eq(expected.aux.epilogue_first_lineno)
-        expect(subject.aux.epilogue.strip).to eq(expected.aux.epilogue.strip)
-
-        subject.rules.each_with_index {|rule, i| expect(rule).to eq(expected.rules[i]) }
-      end
-    end
-  end
-end