77 lines
2.4 KiB
Python
77 lines
2.4 KiB
Python
from inspect import (
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BoundArguments,
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signature,
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)
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import pytest
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import trio
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from piker.ui._app import _async_main
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from piker.ui._display import display_symbol_data
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from piker.ui._widget import GodWidget
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from piker.ui.order_mode import open_order_mode
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@pytest.mark.parametrize('exec_mode', ['', 'Paper', 'dark'])
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def test_chart_rejects_invalid_ems_mode(exec_mode: str) -> None:
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'''
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Reject misspelled execution modes before touching chart startup.
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EMS treats non-paper mode as live when a backend supports trades.
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A chart caller must not accidentally request that path with a
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typo or the order-trigger mode 'dark'. Invoke the actual startup
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coroutine with no widget or backend: ValueError, rather than a
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widget access or runtime error, proves rejection precedes chart
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initialization and any tasks that could acquire brokerd.
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This is a direct input-boundary test, not an EMS integration test.
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'''
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with pytest.raises(ValueError, match='Invalid EMS execution mode'):
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trio.run(
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_async_main,
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None,
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[],
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{},
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'warning',
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exec_mode,
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)
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def test_chart_ems_mode_call_contract() -> None:
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'''
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Preserve the shipped CLI argument shape while enabling paper EMS.
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`_main()` passes only widget, symbols, brokers and loglevel to
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`_async_main()`. Bind that concrete call shape and apply defaults
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to verify it remains live; bind an explicit paper argument to
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verify integration callers need no CLI or runtime adapter changes.
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Check the widget and lower entrypoint defaults as well, since
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omitted arguments must not silently change shipped execution.
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These are direct API-contract assertions. They do not claim to
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exercise forwarding through a running chart or broker selection.
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'''
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cli_call: BoundArguments = signature(_async_main).bind(
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None,
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['xbtusd.kraken'],
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{},
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'warning',
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)
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cli_call.apply_defaults()
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assert cli_call.arguments['exec_mode'] == 'live'
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paper_call: BoundArguments = signature(_async_main).bind(
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*cli_call.args[:-1],
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exec_mode='paper',
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)
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assert paper_call.arguments['exec_mode'] == 'paper'
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assert GodWidget.exec_mode == 'live'
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assert signature(display_symbol_data).parameters[
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'exec_mode'
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].default == 'live'
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assert signature(open_order_mode).parameters[
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'exec_mode'
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].default == 'live'
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