Different tests competing in modifying the store

I am trying to write some tests for my store but I found that different tests are competing in modifying the same store instance so my assertions are mostly failing when I run them together while each of them can pass if I run them one by one. How should I resolve this?

Below show an example, while the "SOME_ACTION" would not change the value of `amount`

```
it('test 1', done => {
AltClaimFormStore.state.amount = 12.3;

var action = ClaimFormActions.SOME_ACTION;
alt.dispatcher.dispatch({ action });

AltClaimFormStore.listen(function () {
if (!AltClaimFormStore.state.isUpdating) {
expect(AltClaimFormStore.state.amount).toBe(12.3);
done();
}
});
});

it('test 2', done => {
AltClaimFormStore.state.amount = 12.4;

var action = ClaimFormActions.SOME_ACTION;
alt.dispatcher.dispatch({ action });

AltClaimFormStore.listen(function () {
if (!AltClaimFormStore.state.isUpdating) {
expect(AltClaimFormStore.state.amount).toBe(12.4);
done();
}
});
});

```

Use the two shown test cases involving AltClaimFormStore, ClaimFormActions.SOME_ACTION, and the dispatcher as the reproduction. Start by checking how the shared store and listeners are initialized between tests; done means both tests pass together consistently without competing state changes.

Written by the indexing model from the issue text.