def test_pha_get_ylabel_yfac1(override_plot_backend):
"""Basic check
The label depends on the backend, so we just want the dummy
backend used here. **UNFORTUNATELY** - either because the
override_plot_backend fixture is not well written, the current
approach to setting up the plot backend does not handle it being
swapped out (e.g. see #1191), or a combination of the two - the
test doesn't work well if there is a non-dummy backend loaded.
"""
chans = np.arange(1, 4)
counts = np.ones_like(chans)
pha = DataPHA("dummy", chans, counts)
pha.plot_fac = 1
# This is ugly - hopefully #1191 will fix this
#
ylabel = pha.get_ylabel()
if backend.__name__.endswith('.dummy_backend'):
assert ylabel == 'Counts/channel X Channel^1'
else:
assert ylabel.startswith('Counts/channel X Channel')
assert "1" in ylabel
def test_sourceplot_wavelength_facn(factor, caplog):
"""Change plot factor for test_sourceplot_wavelength"""
bins = np.arange(0.1, 10.1, 0.1)
data = DataPHA('',
np.arange(10),
np.ones(10),
bin_lo=bins[:-1].copy(),
bin_hi=bins[1:].copy())
data.units = "wavelength"
data.plot_fac = factor
assert data.rate
m1 = Const1D('bgnd')
m2 = Gauss1D('abs1')
src = 100 * m1 * (1 - m2) * 10000
m1.c0 = 0.01
m2.pos = 5.0
m2.fwhm = 4.0
m2.ampl = 0.1
sp = SourcePlot()
with caplog.at_level(logging.INFO, logger='sherpa'):
sp.prepare(data, src)
assert len(caplog.records) == 0
check_sourceplot_wavelength(sp, factor=factor)