def test_overlay_href_non_empty_file():
plot = SigPlot()
assert plot.inputs == []
path = "foo.tmp"
plot.overlay_href(path)
assert plot.inputs == [path]
def test_overlay_href_non_empty_http():
plot = SigPlot()
assert plot.inputs == []
path = "http://sigplot.lgsinnovations.com/dat/sin.tmp"
plot.overlay_href(path)
assert os.path.exists("./sin.tmp")
assert plot.inputs == ["sin.tmp"]
os.remove("./sin.tmp")