add a test for issue51

tests/test_regressions.py

@@ -267,3 +267,18 @@ def test_issue38_no_valid_data():
     assert(ds.variables['total_energy'][:].all() is np.ma.masked)
     assert(ds.variables['total_energy'][:].all() is np.ma.masked)
     assert((ds.variables['DQF'][:] == 0).all())
+
+# checks for a 'dim_0' dimension, which was getting added to nominal_satellite_subpoint_lon unexpectedly
+def test_issue51_dim0():
+    completed_process = subprocess.run(['python',
+                                        MINUTE_GRIDDER,
+                                        "--goes-sector", "conus",
+                                        os.path.join(TESTDIR, "test-inputs/OR_GLM-L2-LCFA_G16_s20220740000000_e20220740000200_c20220740000227.nc"),
+                                        os.path.join(TESTDIR, "test-inputs/OR_GLM-L2-LCFA_G16_s20220740000200_e20220740000400_c20220740000428.nc"),
+                                        os.path.join(TESTDIR, "test-inputs/OR_GLM-L2-LCFA_G16_s20220740000400_e20220740001000_c20220740001027.nc"),
+                                        ])
+    assert completed_process.returncode == 0
+    assert(check_fileglob("CG_GLM-L2-GLMC-M3_G16_s20220740000000_e20220740001000_c*.nc", 1))
+    filename = glob("CG_GLM-L2-GLMC-M3_G16_s20220740000000_e20220740001000_c*.nc")[0]
+    ds = netCDF4.Dataset(filename, 'r')
+    assert('dim_0' not in ds.dimensions)
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