message: test(throttle): test leading: false
  Closes
diff: @@ -455,9 +455,9 @@ describe('throttle', () => {
  ' ------------------^---! ',
  ' ----------------------^---!',
  ];
  - const expected = '-a---y----b---x---x---x---|';
  + const expected = '-----y--------x---x---x---|';
  - const result = e1.pipe(throttle(() => e2, { leading: true, trailing: true }));
  + const result = e1.pipe(throttle(() => e2, { leading: false, trailing: true }));
  expectObservable(result).toBe(expected);
  expectSubscriptions(e1.subscriptions).toBe(e1subs);
  @@ -470,10 +470,10 @@ describe('throttle', () => {
  const s1 = hot('-^-x------------------| ');
  const s1Subs = ' ^--------------------! ';
  const n1 = cold(' ------------------------x ');
  - const n1Subs = ['--^------------------! '];
  - const exp = ' --x------------------| ';
  + const n1Subs = ['--^-----------------------! '];
  + const exp = ' --------------------------(x|)';
  - const result = s1.pipe(throttle(() => n1, { leading: true, trailing: true }));
  + const result = s1.pipe(throttle(() => n1, { leading: false, trailing: true }));
  expectObservable(result).toBe(exp);
  expectSubscriptions(s1.subscriptions).toBe(s1Subs);
  expectSubscriptions(n1.subscriptions).toBe(n1Subs);
  @@ -486,9 +486,9 @@ describe('throttle', () => {
  const sourceSubs = ' ^---------------------! ';
  const duration = cold(' ------------------------x ');
  const durationSubs = ' ---^-----------------------! ';
  - const exp = ' ---x-----------------------(y|)';
  + const exp = ' ---------------------------(y|)';
  - const result = source.pipe(throttle(() => duration, { leading: true, trailing: true }));
  + const result = source.pipe(throttle(() => duration, { leading: false, trailing: true }));
  expectObservable(result).toBe(exp);
  expectSubscriptions(source.subscriptions).toBe(sourceSubs);
  expectSubscriptions(duration.subscriptions).toBe(durationSubs);
  