def test_intervals_low(self):
value = 2
delta_type = "low"
shortest = find_shortest_intervals(history_data=self.history, delta_type=delta_type, threshold=value)
self.assertEqual(shortest, [{'delta': 4.46,
'start': datetime.datetime(2018, 5, 8, 0, 0),
'end': datetime.datetime(2018, 5, 9, 0, 0),
'length': 1}])
def test_negative_value_open(self):
"""
Предположительно, отрицательный value не имеет ввиду то, что ищем разницу "в обратную сторону",
т.е. результат не подразумевает "меньше отрицательного", а всегда больше.
"""
value = -1
delta_type = "open"
shortest = find_shortest_intervals(history_data=self.history, delta_type=delta_type, threshold=value)
self.assertEqual(shortest, [
{'delta': 0, 'start': datetime.datetime(2018, 5, 4, 0, 0), 'end': datetime.datetime(2018, 5, 4, 0, 0), 'length': 0},
{'delta': 0, 'start': datetime.datetime(2018, 5, 7, 0, 0), 'end': datetime.datetime(2018, 5, 7, 0, 0), 'length': 0},
{'delta': 0, 'start': datetime.datetime(2018, 5, 8, 0, 0), 'end': datetime.datetime(2018, 5, 8, 0, 0), 'length': 0},
{'delta': 0, 'start': datetime.datetime(2018, 5, 9, 0, 0), 'end': datetime.datetime(2018, 5, 9, 0, 0), 'length': 0}
])
def delta(ticker_name):
value = request.args.get("value")
try:
value = int(value)
except ValueError:
return bad_request(400, message="Недопустимый тип атрибута value")
delta_type = request.args.get("type")
ticker = Ticker.query.filter_by(name=ticker_name).first()
history_data = History.query.filter_by(ticker_id=ticker.id).order_by(
History.date.asc()).all()
if not hasattr(history_data[0], delta_type):
return bad_request(400, message=f"Недопустимый атрибут {delta_type}")
shortest_intervals = find_shortest_intervals(history_data=history_data,
delta_type=delta_type,
threshold=value)
return jsonify(intervals=shortest_intervals)
def delta(ticker_name):
value = request.args.get("value")
try:
value = int(value)
except ValueError:
flash("Недопустимый тип атрибута value")
return redirect(url_for("ticker", ticker_name=ticker_name))
delta_type = request.args.get("type")
ticker = get_or_404(Ticker, name=ticker_name)
history_data = History.query.filter_by(ticker_id=ticker.id).order_by(
History.date.asc()).all()
if not hasattr(history_data[0], delta_type):
flash(f"Недопустимый атрибут {delta_type}")
return redirect(url_for("ticker", ticker_name=ticker_name))
shortest_intervals = find_shortest_intervals(history_data=history_data,
delta_type=delta_type,
threshold=value)
delta_form = DeltaForm()
if delta_form.validate_on_submit():
delta_val = delta_form.value.data
delta_type = delta_form.type.data
return redirect(
url_for("delta",
ticker_name=ticker_name,
value=delta_val,
type=delta_type))
return render_template("intervals.html",
ticker=ticker,
value=value,
type=delta_type,
intervals=shortest_intervals,
delta_form=delta_form)
def test_zero_intervals_open(self):
value = 10
delta_type = "open"
shortest = find_shortest_intervals(history_data=self.history, delta_type=delta_type, threshold=value)
self.assertEqual(shortest, [])