message: test(compass-shell): better test descriptions
diff: @@ -26,7 +26,7 @@ describe('CompassShell', () => {
  });
  context('when historyStorage is not present', () => {
  - it('passes initialHistory={[]} to Shell', () => {
  + it('passes an empty history to the Shell', () => {
  const fakeRuntime = {};
  const wrapper = shallow(<CompassShell runtime={fakeRuntime} />);
  @@ -47,7 +47,7 @@ describe('CompassShell', () => {
  fakeRuntime = {};
  });
  - it('passes loadedHistory as initialHistory to Shell', async() => {
  + it('passes the loaded history as initialHistory to Shell', async() => {
  fakeStorage.load = sinon.spy(() => Promise.resolve(['line1']));
  const wrapper = shallow(<CompassShell
  @@ -59,7 +59,7 @@ describe('CompassShell', () => {
  expect(wrapper.find(Shell).prop('initialHistory')).to.deep.equal(['line1']);
  });
  - it('calls historyStorage.save when history changes', async() => {
  + it('saves the history when history changes', async() => {
  const wrapper = shallow(<CompassShell
  runtime={fakeRuntime}
  historyStorage={fakeStorage} />);
  