Added tests

Author: nobu

.github/workflows/test.yml

@@ -0,0 +1,20 @@
+name: ubuntu
+
+on: [push, pull_request]
+
+jobs:
+  build:
+    name: build (${{ matrix.ruby }} / ${{ matrix.os }})
+    strategy:
+      matrix:
+        ruby: [ '3.0', 2.7, 2.6, head ]
+        os: [ ubuntu-latest, macos-latest, windows-latest ]
+    runs-on: ${{ matrix.os }}
+    steps:
+    - uses: actions/checkout@master
+    - name: Set up Ruby
+      uses: ruby/setup-ruby@v1
+      with:
+        ruby-version: ${{ matrix.ruby }}
+    - name: Run test
+      run: rake test

Rakefile

@@ -0,0 +1,8 @@
+require "bundler/gem_tasks"
+require "rake/testtask"
+
+Rake::TestTask.new(:test) do |t|
+  t.test_files = FileList["test/**/test_*.rb"]
+end
+
+task :default => :test

ruby2_keywords.gemspec

@@ -1,4 +1,4 @@
-version = IO.popen(%W[git -C #{__dir__} describe --tags --match v[0-9]*], &:read)[/\Av?(\d+(?:\.\d+)*)/, 1]
+version = "0.0.3"
 abort "Version must not reach 1" if version[/\d+/].to_i >= 1
 
 Gem::Specification.new do |s|

test/test_keyword.rb

@@ -0,0 +1,41 @@
+require 'test/unit'
+LOADING_RUBY2_KEYWORDS = (RUBY_VERSION.scan(/\d+/).map(&:to_i) <=> [2, 7]) < 0
+if LOADING_RUBY2_KEYWORDS
+  require 'ruby2_keywords'
+end
+
+class TestKeywordArguments < Test::Unit::TestCase
+  def test_loaded_features
+    list = $LOADED_FEATURES.grep(%r[/ruby2_keywords\.rb\z])
+    if LOADING_RUBY2_KEYWORDS
+      assert_not_empty(list)
+      assert_not_include($LOADED_FEATURES, "ruby2_keywords.rb")
+    else
+      assert_empty(list)
+      assert_include($LOADED_FEATURES, "ruby2_keywords.rb")
+    end
+  end
+
+  def test_module_ruby2_keywords
+    assert_send([Module, :private_method_defined?, :ruby2_keywords])
+    assert_operator(Module.instance_method(:ruby2_keywords).arity, :<, 0)
+  end
+
+  def test_toplevel_ruby2_keywords
+    main = TOPLEVEL_BINDING.receiver
+    assert_send([main, :respond_to?, :ruby2_keywords, true])
+    assert_operator(main.method(:ruby2_keywords).arity, :<, 0)
+  end
+
+  def test_proc_ruby2_keywords
+    assert_respond_to(Proc.new {}, :ruby2_keywords)
+  end
+
+  def test_hash_ruby2_keywords_hash?
+    assert_false(Hash.ruby2_keywords_hash?({}))
+  end
+
+  def test_hash_ruby2_keywords_hash
+    assert_equal({}, Hash.ruby2_keywords_hash({}.freeze))
+  end
+end