Avoid pytest warnings (#1064)

* prevent parsing of multiple datetime columns

* captured cdsapi warnings

dfm_tools/observations.py

@@ -682,7 +682,12 @@ def gesla3_ssh_retrieve_data(row, dir_output, time_min=None, time_max=None,
     with gesla3_zip.open(file_gesla, "r") as f:
         data = pd.read_csv(f, comment='#', sep="\\s+",
                            names=["date", "time", "sea_level", "qc_flag", "use_flag"],
-                           parse_dates=[[0, 1]], index_col=0)
+                           )
+    # set datetimes as index
+    dates = data.pop("date")
+    times = data.pop("time")
+    data_dt = dates + " " + times
+    data.index = pd.to_datetime(data_dt)
 
     # clean up time duplicates
     data.index.name = 'time'

tests/test_download.py

@@ -130,18 +130,22 @@ def test_cds_credentials_oldurl_incorrectkey_rcfile():
     cds_apikey_temp = "INCORRECT-APIKEY"
     cds_set_credentials_rcfile(cds_url_temp, cds_apikey_temp)
     with pytest.raises(ValueError) as e:
-        cds_credentials()
+        with pytest.warns(UserWarning) as w:
+            cds_credentials()
     assert "Old CDS URL found" in str(e.value)
     assert "The CDS/ECMWF apikey file (~/.cdsapirc) was deleted" in str(e.value)
+    assert "404 Client Error: Not Found for url:" in str(w[0].message)
 
     # test
     cds_url_temp = "https://cds-beta.climate.copernicus.eu/api"
     cds_apikey_temp = "INCORRECT-APIKEY"
     cds_set_credentials_rcfile(cds_url_temp, cds_apikey_temp)
     with pytest.raises(ValueError) as e:
-        cds_credentials()
+        with pytest.warns(UserWarning) as w:
+            cds_credentials()
     assert "Old CDS URL found" in str(e.value)
     assert "The CDS/ECMWF apikey file (~/.cdsapirc) was deleted" in str(e.value)
+    assert "certificate verify failed" in str(w[0].message)
 
     # restore credentials file/envvars
     set_cds_credentials_ifnot_none(cds_url, cds_apikey)
@@ -158,17 +162,21 @@ def test_cds_credentials_oldurl_incorrectkey_envvars():
     os.environ["CDSAPI_URL"] = "https://cds.climate.copernicus.eu/api/v2"
     os.environ["CDSAPI_KEY"] = "INCORRECT-APIKEY"
     with pytest.raises(ValueError) as e:
-        cds_credentials()
+        with pytest.warns(UserWarning) as w:
+            cds_credentials()
     assert "Old CDS URL found" in str(e.value)
     assert "The CDS/ECMWF apikey file (~/.cdsapirc) was deleted" in str(e.value)
+    assert "404 Client Error: Not Found for url:" in str(w[0].message)
 
     # test
     os.environ["CDSAPI_URL"] = "https://cds-beta.climate.copernicus.eu/api"
     os.environ["CDSAPI_KEY"] = "INCORRECT-APIKEY"
     with pytest.raises(ValueError) as e:
-        cds_credentials()
+        with pytest.warns(UserWarning) as w:
+            cds_credentials()
     assert "Old CDS URL found" in str(e.value)
     assert "The CDS/ECMWF apikey file (~/.cdsapirc) was deleted" in str(e.value)
+    assert "certificate verify failed" in str(w[0].message)
 
     # restore credentials file/envvars
     set_cds_credentials_ifnot_none(cds_url, cds_apikey)