spec/profile_spec.rb in music-transcription-0.5.5 vs spec/profile_spec.rb in music-transcription-0.5.6

@@ -97,9 +97,24 @@
       p.shift!(-1.0)
       p.value_changes[5.0].value.should eq(0.1)
       p.value_changes[7.5].value.should eq(0.2)
     end
   end
+
+  describe '#stretch!' do
+    it 'should multiply change offsets by ratio' do
+      p = Profile.new(0.0, 5.0 => Change::Immediate.new(0.1), 7.5 => Change::Immediate.new(0.2))
+      p.stretch!(1)
+      p.value_changes[5.0].value.should eq(0.1)
+      p.value_changes[7.5].value.should eq(0.2)
+      p.stretch!("3/2".to_r)
+      p.value_changes[7.5].value.should eq(0.1)
+      p.value_changes[11.25].value.should eq(0.2)
+      p.stretch!("2/3".to_r)
+      p.value_changes[5.0].value.should eq(0.1)
+      p.value_changes[7.5].value.should eq(0.2)
+    end
+  end
   
   describe '#append!' do
     before :each do
       @p1 = Profile.new(0.0, 5.0 => Change::Immediate.new(0.1), 7.5 => Change::Immediate.new(0.2))
       @p2 = Profile.new(0.2, 1.0 => Change::Immediate.new(0.0), 2.0 => Change::Gradual.new(100.0))