minimal plugin test coverage

jdaviz/configs/specviz2d/plugins/spectral_extraction/tests/test_spectral_extraction.py

@@ -1,4 +1,18 @@
+import pytest
+from asdf.asdf import AsdfWarning
+from astropy.utils.data import download_file
 
-def test_plugin(specviz2d_helper, spectrum2d):
-    label = "Test 1D Spectrum"
-    specviz2d_helper.load_spectrum(spectrum2d, data_label=label)
+from specreduce import tracing
+
+
+@pytest.mark.remote_data
+def test_plugin(specviz2d_helper):
+    fn = download_file('https://stsci.box.com/shared/static/exnkul627fcuhy5akf2gswytud5tazmw.fits', cache=True)  # noqa
+
+    with pytest.warns(AsdfWarning, match='jwextension'):
+        specviz2d_helper.load_data(spectrum_2d=fn)
+
+    pext = specviz2d_helper.app.get_tray_item_from_name('spectral-extraction')
+
+    trace = pext.create_trace()
+    assert isinstance(trace, tracing.Trace)