diff --git a/test/racc/test_sample.rb b/test/racc/test_sample.rb
deleted file mode 100644
index 2c7813f50c..0000000000
--- a/test/racc/test_sample.rb
+++ /dev/null
@@ -1,80 +0,0 @@
-require File.expand_path('lib/helper', __dir__)
-
-module Racc
-  class TestSample < TestCase
-    # working samples
-    [
-      {
-        grammar_file: "array.y",
-        parser_class: :ArrayParser,
-        testcases: [
-          { input: "[1]", expected: ["1"] },
-          { input: "[1, 2]", expected: ["1", "2"] },
-        ]
-      },
-      {
-        grammar_file: "array2.y",
-        parser_class: :ArrayParser2,
-        testcases: [
-          { input: "[1]", expected: ["1"] },
-          { input: "[1, 2]", expected: ["1", "2"] },
-        ]
-      },
-      {
-        grammar_file: "calc.y",
-        parser_class: :Calcp,
-        testcases: [
-          { input: "1", expected: 1 },
-          { input: "10", expected: 10 },
-          { input: "2 + 1", expected: 3 },
-          { input: "2 - 1", expected: 1 },
-          { input: "3 * 4", expected: 12 },
-          { input: "4 / 2", expected: 2 },
-          { input: "3 / 2", expected: 1 },
-          { input: "2 + 3 * 4", expected: 14 },
-          { input: "(2 + 3) * 4", expected: 20 },
-          { input: "2 + (3 * 4)", expected: 14 },
-        ]
-      },
-      {
-        grammar_file: "hash.y",
-        parser_class: :HashParser,
-        testcases: [
-          { input: "{}", expected: {} },
-          { input: "{ a => b }", expected: { "a" => "b" } },
-          { input: "{ a => b, 1 => 2 }", expected: { "a" => "b", "1" => "2" } },
-        ]
-      },
-    ].each do |data|
-      define_method "test_#{data[:grammar_file]}" do
-        outfile = compile_sample(data[:grammar_file])
-
-        load(outfile)
-
-        parser_class = Object.const_get(data[:parser_class])
-        data[:testcases].each do |testcase|
-          input = testcase[:input]
-          actual = parser_class.new.parse(input)
-          expected = testcase[:expected]
-          assert_equal(expected, actual, "expected #{expected} but got #{actual} when input is #{input}")
-        end
-      ensure
-        remove_const_f(data[:parser_class])
-      end
-    end
-
-    private
-
-    # returns the generated file's path
-    def compile_sample(yfile)
-      file = File.basename(yfile, '.y')
-      out = File.join(@OUT_DIR, file)
-      ruby "-I#{LIB_DIR}", RACC, File.join(SAMPLE_DIR, yfile), "-o#{out}"
-      out
-    end
-
-    def remove_const_f(const_name)
-      Object.send(:remove_const, const_name) if Object.const_defined?(const_name, false)
-    end
-  end
-end