Add test files and include pitch.rb in music_theory.rb

lib/music_theory.rb

@@ -12,6 +12,7 @@
 require "music_theory/harmonize"
 require "music_theory/output"
 require "music_theory/play"
+require "music_theory/pitch"
 
 
 module MusicTheory

test/implement_pitch_test.rb

@@ -0,0 +1,11 @@
+require 'test_helper'
+
+class TestNote < MiniTest::Test
+  def setup
+    # @pitch_object_note = MusicTheory::Note.new(frequency: (:B, 4), duration: 1.0, distort: false)
+    @frequency_note    = MusicTheory::Note.new(frequency: 493.883, duration: 1.0, distort: false)
+  end
+
+  def test_note_accepts_pitch_object_input
+  end
+end

test/pitch_test.rb

@@ -0,0 +1,21 @@
+require 'test_helper'
+
+class TestPitch < MiniTest::Test
+  def setup
+    @A4  = Pitch.new :a,   4
+    @Ds2 = Pitch.new 'dS', 2
+    @Gf5 = Pitch.new :Gf,  5
+  end
+
+  def test_frequency
+    assert_equal @A4.frequency,  440.0
+    assert_equal @Ds2.frequency, 77.782
+    assert_equal @Gf5.frequency, 739.989
+  end
+
+  def test_to_s
+    assert_equal @A4.to_s,  "A 4"
+    assert_equal @Ds2.to_s, "D# 2"
+    assert_equal @Gf5.to_s, "Gb 5"
+  end
+end