def test_frontend_overrides_backend(mocker: "pytest_mock.MockFixture"):
"""
class Renderer inherits from (RendererFrontend, backend).
RendererFrontend.get_frame() is a wrapper around backend.get_frame()
and should override it (RendererFrontend should come first in MRO).
Make sure RendererFrontend methods overshadow backend methods.
"""
# If RendererFrontend.get_frame() override is removed, delete this entire test.
frontend_get_frame = mocker.spy(RendererFrontend, "get_frame")
backend_get_frame = mocker.spy(AbstractMatplotlibRenderer, "get_frame")
corr_cfg = template_config()
chan_cfg = ChannelConfig("tests/sine440.wav")
channel = Channel(chan_cfg, corr_cfg, channel_idx=0)
data = channel.get_render_around(0)
renderer = Renderer(corr_cfg.render, corr_cfg.layout, [data], [chan_cfg], [channel])
renderer.update_main_lines([data])
renderer.get_frame()
assert frontend_get_frame.call_count == 1
assert backend_get_frame.call_count == 1
def test_renderer_knows_stride(mocker: "pytest_mock.MockFixture", integration: bool):
"""
If Renderer draws both "main line" and "custom mono lines" at once,
each line must have its x-coordinates multiplied by the stride.
Renderer uses "main line stride = 1" by default,
but this results in the main line appearing too narrow compared to debug lines.
Make sure CorrScope.play() gives Renderer the correct values.
"""
# Stub out FFplay output.
mocker.patch.object(FFplayOutputConfig, "cls")
subsampling = 2
width_mul = 3
chan_cfg = ChannelConfig("tests/sine440.wav", render_width=width_mul)
corr_cfg = template_config(
render_subsampling=subsampling, channels=[chan_cfg], end_time=0
)
if integration:
corr = CorrScope(corr_cfg, Arguments(".", [FFplayOutputConfig()]))
corr.play()
assert corr.renderer.render_strides == [subsampling * width_mul]
else:
channel = Channel(chan_cfg, corr_cfg, channel_idx=0)
data = channel.get_render_around(0)
renderer = Renderer(
corr_cfg.render, corr_cfg.layout, [data], [chan_cfg], [channel]
)
assert renderer.render_strides == [subsampling * width_mul]
def _load_channels(self) -> None:
with pushd(self.arg.cfg_dir):
# Tell user if master audio path is invalid.
# (Otherwise, only ffmpeg uses the value of master_audio)
# Windows likes to raise OSError when path contains *, but we don't care.
if self.cfg.master_audio and not Path(self.cfg.master_audio).exists():
raise CorrError(
f'File not found: master_audio="{self.cfg.master_audio}"'
)
self.channels = [Channel(ccfg, self.cfg) for ccfg in self.cfg.channels]
self.trigger_waves = [channel.trigger_wave for channel in self.channels]
self.render_waves = [channel.render_wave for channel in self.channels]
self.triggers = [channel.trigger for channel in self.channels]
self.nchan = len(self.channels)
def test_per_channel_stereo(
filename: str, global_stereo: Flatten, chan_stereo: Optional[Flatten]
):
"""Ensure you can enable/disable stereo on a per-channel basis."""
stereo = coalesce(chan_stereo, global_stereo)
# Test render wave.
cfg = template_config(render_stereo=global_stereo)
ccfg = ChannelConfig("tests/stereo in-phase.wav", render_stereo=chan_stereo)
channel = Channel(ccfg, cfg)
# Render wave *must* return stereo.
assert channel.render_wave[0:1].ndim == 2
data = channel.render_wave.get_around(0, return_nsamp=4, stride=1)
assert data.ndim == 2
if "stereo" in filename:
assert channel.render_wave._flatten == stereo
assert data.shape[1] == (2 if stereo is Flatten.Stereo else 1)
def test_config_channel_integration(
# Channel
c_amplification: Optional[float],
c_trigger_width: int,
c_render_width: int,
# Global
amplification: float,
trigger_ms: int,
render_ms: int,
tsub: int,
rsub: int,
default_label: DefaultLabel,
override_label: bool,
mocker: MockFixture,
):
""" (Tautologically) verify:
- channel. r_samp (given cfg)
- channel.t/r_stride (given cfg.*_subsampling/*_width)
- trigger._tsamp, _stride
- renderer's method calls(samp, stride)
- rendered label (channel.label, given cfg, corr_cfg.default_label)
"""
# region setup test variables
corrscope.corrscope.PRINT_TIMESTAMP = False # Cleanup Hypothesis testing logs
Wave = mocker.patch.object(corrscope.channel, "Wave")
wave = Wave.return_value
def get_around(sample: int, return_nsamp: int, stride: int):
return np.zeros(return_nsamp)
wave.get_around.side_effect = get_around
wave.with_flatten.return_value = wave
wave.nsamp = 10000
wave.smp_s = 48000
ccfg = ChannelConfig(
"tests/sine440.wav",
trigger_width=c_trigger_width,
render_width=c_render_width,
amplification=c_amplification,
label="label" if override_label else "",
)
def get_cfg():
return template_config(
trigger_ms=trigger_ms,
render_ms=render_ms,
trigger_subsampling=tsub,
render_subsampling=rsub,
amplification=amplification,
channels=[ccfg],
default_label=default_label,
trigger=NullTriggerConfig(),
benchmark_mode=BenchmarkMode.OUTPUT,
)
# endregion
cfg = get_cfg()
channel = Channel(ccfg, cfg)
# Ensure cfg.width_ms etc. are correct
assert cfg.trigger_ms == trigger_ms
assert cfg.render_ms == render_ms
# Ensure channel.window_samp, trigger_subsampling, render_subsampling are correct.
def ideal_samp(width_ms, sub):
width_s = width_ms / 1000
return pytest.approx(
round(width_s * channel.trigger_wave.smp_s / sub), rel=1e-6
)
ideal_tsamp = ideal_samp(cfg.trigger_ms, tsub)
ideal_rsamp = ideal_samp(cfg.render_ms, rsub)
assert channel._render_samp == ideal_rsamp
assert channel._trigger_stride == tsub * c_trigger_width
assert channel.render_stride == rsub * c_render_width
# Ensure amplification override works
args, kwargs = Wave.call_args
assert kwargs["amplification"] == coalesce(c_amplification, amplification)
## Ensure trigger uses channel.window_samp and _trigger_stride.
trigger = channel.trigger
assert trigger._tsamp == ideal_tsamp
assert trigger._stride == channel._trigger_stride
## Ensure corrscope calls render using channel._render_samp and _render_stride.
corr = CorrScope(cfg, Arguments(cfg_dir=".", outputs=[]))
renderer = mocker.patch.object(CorrScope, "_load_renderer").return_value
corr.play()
# Only Channel.get_render_around() (not NullTrigger) calls wave.get_around().
(_sample, _return_nsamp, _subsampling), kwargs = wave.get_around.call_args
assert _return_nsamp == channel._render_samp
assert _subsampling == channel.render_stride
# Inspect arguments to renderer.update_main_lines()
# datas: List[np.ndarray]
(datas,), kwargs = renderer.update_main_lines.call_args
render_data = datas[0]
assert len(render_data) == channel._render_samp
# Inspect arguments to renderer.add_labels().
(labels,), kwargs = renderer.add_labels.call_args
label = labels[0]
if override_label:
assert label == "label"
else:
if default_label is DefaultLabel.FileName:
assert label == "sine440"
elif default_label is DefaultLabel.Number:
assert label == "1"
else:
assert label == ""