message: coverage test for modulationType
diff: @@ -193,7 +193,6 @@ define(["helper/Basic", "Tone/source/OmniOscillator", "helper/Offline", "helper/
  it("setting/getting values when the wrong type is set has no effect", function(){
  var omni = new OmniOscillator(440, "sine");
  omni.set({
  - "modulationType" : "sine",
  "modulationIndex" : 4,
  "harmonicity" : 3,
  })
  @@ -201,6 +200,7 @@ define(["helper/Basic", "Tone/source/OmniOscillator", "helper/Offline", "helper/
  expect(omni.spread).to.be.undefined;
  omni.count = 5;
  expect(omni.count).to.be.undefined;
  + omni.modulationType = "sine";
  expect(omni.modulationType).to.be.undefined;
  expect(omni.modulationIndex).to.be.undefined;
  expect(omni.harmonicity).to.be.undefined;
  