test +

repl.rb

@@ -19,12 +19,7 @@ module Rpn
 
     def run
       Readline.completion_proc = proc do |s|
-        directory_list = Dir.glob("#{s}*")
+        Readline::HISTORY.grep(/^#{Regexp.escape(s)}/)
-        if directory_list.positive?
-          directory_list
-        else
-          Readline::HISTORY.grep(/^#{Regexp.escape(s)}/)
-        end
       end
       Readline.completion_append_character = ' '
 
@@ -32,6 +27,10 @@ module Rpn
         input = Readline.readline( ' ', true )
         break if input.nil? || input == 'quit'
 
+        pp Readline::HISTORY if input == 'history'
+
+        input = '"rpn.rb version 0.0"' if %w[version uname].include?( input )
+
         # Remove blank lines from history
         Readline::HISTORY.pop if input.empty?
 

spec/language_operations_spec.rb

@@ -0,0 +1,55 @@
+# coding: utf-8
+# frozen_string_literal: true
+
+require 'test/unit'
+
+require_relative '../lib/core'
+
+class TestParser < Test::Unit::TestCase
+  def test_plus
+    stack = Rpn::Core::Operations.add [{ value: 1, type: :numeric },
+                                       { value: 2, type: :numeric }]
+    assert_equal [{ value: 3, type: :numeric }],
+                 stack
+
+    stack = Rpn::Core::Operations.add [{ value: 1, type: :numeric },
+                                       { value: '"a"', type: :string }]
+    assert_equal [{ value: '"1a"', type: :string }],
+                 stack
+
+    stack = Rpn::Core::Operations.add [{ value: 1, type: :numeric },
+                                       { value: "'a'", type: :name }]
+    assert_equal [{ value: '"1a"', type: :string }],
+                 stack
+
+    stack = Rpn::Core::Operations.add [{ value: "'a'", type: :name },
+                                       { value: 1, type: :numeric }]
+    assert_equal [{ value: "'a1'", type: :name }],
+                 stack
+
+    stack = Rpn::Core::Operations.add [{ value: "'a'", type: :name },
+                                       { value: '"b"', type: :string }]
+    assert_equal [{ value: "'ab'", type: :name }],
+                 stack
+
+    stack = Rpn::Core::Operations.add [{ value: "'a'", type: :name },
+                                       { value: "'b'", type: :name }]
+    assert_equal [{ value: "'ab'", type: :name }],
+                 stack
+
+    stack = Rpn::Core::Operations.add [{ value: '"a"', type: :string },
+                                       { value: '"b"', type: :string }]
+    assert_equal [{ value: '"ab"', type: :string }],
+                 stack
+
+    stack = Rpn::Core::Operations.add [{ value: '"a"', type: :string },
+                                       { value: "'b'", type: :name }]
+    assert_equal [{ value: '"ab"', type: :string }],
+                 stack
+
+    stack = Rpn::Core::Operations.add [{ value: '"a"', type: :string },
+                                       { value: 1, type: :numeric }]
+    assert_equal [{ value: '"a1"', type: :string }],
+                 stack
+  end
+end