[df] Add DistRDF test for DefaultValueFor, FilterAvailable, FilterMis…

…sing

python/distrdf/backends/check_missing_values.py

@@ -0,0 +1,37 @@
+import pytest
+
+import ROOT
+
+
+class TestMissingValues:
+    """Tests of dealing with missing values in the input dataset."""
+
+    def test_defaults_and_missing(self, payload):
+        """
+        Test DefaultValueFor, FilterAvailable, FilterMissing operations
+        string of operations.
+        """
+        filenames = [
+            # 10k entries, defining b1, b2, b3 (Int_t), all always equal to 42
+            f"../data/ttree/distrdf_roottest_check_rungraphs.root",
+            # 100 entries defining 'v' (Double_t)
+            f"../data/ttree/distrdf_roottest_check_reducer_merge_1.root",
+        ]
+        connection, _ = payload
+        df = ROOT.RDataFrame("tree", filenames, executor=connection)
+        c10k = df.FilterAvailable("b1").Count()
+        c100 = df.FilterAvailable("v").Count()
+        c100b = df.FilterMissing("b1").Count()
+        cD10k = df.DefaultValueFor("b1", 40).Filter("b1 == 42").Count()
+        cD10100 = df.DefaultValueFor("b1", 42).Filter("b1 == 42").Count()
+        sV = df.DefaultValueFor("v", 0.1).Sum("v")
+        assert c10k.GetValue() == 10000, f"{c10k.GetValue()=}"
+        assert c100.GetValue() == 100, f"{c100.GetValue()=}"
+        assert c100b.GetValue() == 100, f"{c100b.GetValue()=}"
+        assert cD10k.GetValue() == 10000, f"{cD10k.GetValue()=}"
+        assert cD10100.GetValue() == 10100, f"{cD10100.GetValue()=}"
+        assert sV.GetValue() == 5950.0, f"{sV.GetValue()=}"
+
+
+if __name__ == "__main__":
+    pytest.main(args=[__file__])

python/distrdf/backends/test_all.py

@@ -13,6 +13,7 @@
 from check_distribute_headers_sharedlibs_files import *
 from check_inv_mass import *
 from check_live_visualize import *
+from check_missing_values import *
 from check_reducer_merge import *
 from check_rungraphs import *
 from check_variations import *