Add chords to music (#721)

README.md

@@ -868,6 +868,8 @@ Faker::Space.distance_measurement #=> "15 parsecs"
 ```ruby
 Faker::Music.key #=> "C"
 
+Faker::Music.chord => "Amaj7"
+
 Faker::Music.instrument #=> "Ukelele"
 ```
 

lib/faker/music.rb

@@ -5,6 +5,10 @@ def key
         keys.sample + key_variants.sample
       end
 
+      def chord
+        key + chord_types.sample
+      end
+
       def instrument
         fetch('music.instruments')
       end
@@ -16,6 +20,10 @@ def keys
       def key_variants
         ['b', '#', '']
       end
+
+      def chord_types
+        ['', 'maj', '6', 'maj7', 'm', 'm7', '-7', '7', 'dom7', 'dim', 'dim7', 'm7b5']
+      end
     end
   end
 end

test/test_faker_music.rb

@@ -20,11 +20,22 @@ def test_key_variants
     end
   end
 
+  def test_chord_types
+    assert @tester.chord_types.size == 12
+    @tester.chord_types.each do |chord_type|
+      assert !chord_type.nil?
+    end
+  end
+
   def test_key
     assert @tester.name.match(/([A-Z])+(b|#){0,1}/)
   end
 
   def test_instrument
     assert @tester.instrument.match(/\w+/)
   end
+
+  def test_chord
+    assert @tester.name.match(/([A-Z])+(b|#){0,1}+([a-zA-Z0-9]{0,4})/)
+  end
 end