import PreloadStore from 'preload-store';

QUnit.module("preload-store", {
  beforeEach() {
    PreloadStore.store('bane', 'evil');
  }
});

QUnit.test("get", assert => {
  assert.blank(PreloadStore.get('joker'), "returns blank for a missing key");
  assert.equal(PreloadStore.get('bane'), 'evil', "returns the value for that key");
});

QUnit.test("remove", assert => {
  PreloadStore.remove('bane');
  assert.blank(PreloadStore.get('bane'), "removes the value if the key exists");
});

asyncTestDiscourse("getAndRemove returns a promise that resolves to null", function(assert) {
  assert.expect(1);

  const done = assert.async();
  PreloadStore.getAndRemove('joker').then(function(result) {
    assert.blank(result);
    done();
  });
});

asyncTestDiscourse("getAndRemove returns a promise that resolves to the result of the finder", function(assert) {
  assert.expect(1);

  const done = assert.async();
  const finder = function() { return 'batdance'; };
  PreloadStore.getAndRemove('joker', finder).then(function(result) {
    assert.equal(result, 'batdance');
    done();
  });

});

asyncTestDiscourse("getAndRemove returns a promise that resolves to the result of the finder's promise", function(assert) {
  assert.expect(1);

  const finder = function() {
    return new Ember.RSVP.Promise(function(resolve) { resolve('hahahah'); });
  };

  const done = assert.async();
  PreloadStore.getAndRemove('joker', finder).then(function(result) {
    assert.equal(result, 'hahahah');
    done();
  });
});

asyncTestDiscourse("returns a promise that rejects with the result of the finder's rejected promise", function(assert) {
  assert.expect(1);

  const finder = function() {
    return new Ember.RSVP.Promise(function(resolve, reject) { reject('error'); });
  };

  const done = assert.async();
  PreloadStore.getAndRemove('joker', finder).then(null, function(result) {
    assert.equal(result, 'error');
    done();
  });

});

asyncTestDiscourse("returns a promise that resolves to 'evil'", function(assert) {
  assert.expect(1);

  const done = assert.async();
  PreloadStore.getAndRemove('bane').then(function(result) {
    assert.equal(result, 'evil');
    done();
  });
});