lib/music-transcription/meter.rb in music-transcription-0.7.1 vs lib/music-transcription/meter.rb in music-transcription-0.7.2

@@ -1,14 +1,29 @@
 module Music
 module Transcription
 
 class Meter
+  include Validatable
   
   attr_reader :measure_duration, :beat_duration, :beats_per_measure
   def initialize beats_per_measure, beat_duration
     @beats_per_measure = beats_per_measure
     @beat_duration = beat_duration
     @measure_duration = beats_per_measure * beat_duration
+    
+    @check_methods = [ :check_beats_per_measure, :check_beat_duration ]
+  end
+  
+  def check_beats_per_measure
+    unless @beats_per_measure.is_a?(Integer) && @beats_per_measure > 0
+      raise NotPositiveIntegerError, "beats per measure #{@beats_per_measure} is not a positive integer"
+    end
+  end
+    
+  def check_beat_duration
+    unless @beat_duration > 0
+      raise ValueNotPositiveError, "beat duration #{@beat_duration} is not positive"
+    end
   end
   
   def ==(other)
     return (@beats_per_measure == other.beats_per_measure &&
       @beat_duration == other.beat_duration)
\ No newline at end of file