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* added `SoftSignalBackend` and `MockSignalBackend` also added utility functions for `MockSignalBackend` in tests * changed to give `MockSignalBackend` a reference to a `SoftSignalBackend` * fixed flakey ioc test fixture * use real panda controller in HDFPanda test
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,86 @@ | ||
| import asyncio | ||
| from typing import Optional, Type | ||
| from unittest.mock import MagicMock | ||
|
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| from bluesky.protocols import Descriptor, Reading | ||
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| from ophyd_async.core.signal_backend import SignalBackend | ||
| from ophyd_async.core.soft_signal_backend import SoftSignalBackend | ||
| from ophyd_async.core.utils import DEFAULT_TIMEOUT, ReadingValueCallback, T | ||
|
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| class MockSignalBackend(SignalBackend): | ||
| def __init__( | ||
| self, | ||
| datatype: Optional[Type[T]] = None, | ||
| initial_backend: Optional[SignalBackend[T]] = None, | ||
| ) -> None: | ||
| if isinstance(initial_backend, MockSignalBackend): | ||
| raise ValueError("Cannot make a MockSignalBackend for a MockSignalBackends") | ||
|
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| self.initial_backend = initial_backend | ||
|
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| if datatype is None: | ||
| assert ( | ||
| self.initial_backend | ||
| ), "Must supply either initial_backend or datatype" | ||
| datatype = self.initial_backend.datatype | ||
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| self.datatype = datatype | ||
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| if not isinstance(self.initial_backend, SoftSignalBackend): | ||
| # If the backend is a hard signal backend, or not provided, | ||
| # then we create a soft signal to mimick it | ||
|
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| self.soft_backend = SoftSignalBackend(datatype=datatype) | ||
| else: | ||
| self.soft_backend = initial_backend | ||
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| self.mock = MagicMock() | ||
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| self.put_proceeds = asyncio.Event() | ||
| self.put_proceeds.set() | ||
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| def source(self, name: str) -> str: | ||
| self.mock.source(name) | ||
| if self.initial_backend: | ||
| return f"mock+{self.initial_backend.source(name)}" | ||
| return f"mock+{name}" | ||
|
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| async def connect(self, timeout: float = DEFAULT_TIMEOUT) -> None: | ||
| self.mock.connect(timeout=timeout) | ||
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| async def put(self, value: Optional[T], wait=True, timeout=None): | ||
| self.mock.put(value, wait=wait, timeout=timeout) | ||
| await self.soft_backend.put(value, wait=wait, timeout=timeout) | ||
|
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| if wait: | ||
| await asyncio.wait_for(self.put_proceeds.wait(), timeout=timeout) | ||
|
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| def set_value(self, value: T): | ||
| self.mock.set_value(value) | ||
| self.soft_backend.set_value(value) | ||
|
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| async def get_descriptor(self, source: str) -> Descriptor: | ||
| self.mock.get_descriptor(source) | ||
| return await self.soft_backend.get_descriptor(source) | ||
|
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| async def get_reading(self) -> Reading: | ||
| self.mock.get_reading() | ||
| return await self.soft_backend.get_reading() | ||
|
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| async def get_value(self) -> T: | ||
| self.mock.get_value() | ||
| return await self.soft_backend.get_value() | ||
|
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| async def get_setpoint(self) -> T: | ||
| """For a soft signal, the setpoint and readback values are the same.""" | ||
| self.mock.get_setpoint() | ||
| return await self.soft_backend.get_setpoint() | ||
|
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| async def get_datakey(self, source: str) -> Descriptor: | ||
| return await self.soft_backend.get_datakey(source) | ||
|
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| def set_callback(self, callback: Optional[ReadingValueCallback[T]]) -> None: | ||
| self.mock.set_callback(callback) | ||
| self.soft_backend.set_callback(callback) |
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