bugfix: variables not listed on the left hand side in the config

        were not available in flagger based dsl function (e.g. isflagged)

saqc/core/core.py

@@ -18,7 +18,7 @@ def _collectVariables(meta, data):
     find every relevant variable
     """
     # NOTE: get to know every variable from meta
-    variables = []
+    variables = list(data.columns)
     for idx, configrow in meta.iterrows():
         varname = configrow[Fields.VARNAME]
         # assign = configrow[Fields.ASSIGN]

test/core/test_core.py

@@ -98,23 +98,6 @@ def test_positionalPartitioning(data, flagger, flags):
         ), f"different end indices: {fchunk.index.max()} vs. {end_index}"
 
 
-@pytest.mark.parametrize("flagger", TESTFLAGGER)
-@pytest.mark.parametrize("optional", OPTIONAL)
-def test_missingConfig(data, flagger, flags):
-    """
-    Test if variables available in the dataset but not the config
-    are handled correctly, i.e. are ignored
-    """
-    var1, var2, *_ = data.columns
-
-    metadict = [{F.VARNAME: var1, F.TESTS: "flagAll()"}]
-    metafobj, meta = initMetaDict(metadict, data)
-
-    pdata, pflagger = run(metafobj, flagger, data, flags=flags)
-
-    assert var1 in pdata and var2 not in pflagger.getFlags()
-
-
 @pytest.mark.parametrize("flagger", TESTFLAGGER)
 def test_errorHandling(data, flagger):