ConfigurationSampler.contains_subset_of: Handle unset

experitur/core/configurators.py

@@ -173,26 +173,29 @@ def contains_subset_of(
         if exclude is None:
             exclude = set()
 
-        values = {
+        # The parameter values that should contain the supplied configuration, without `exclude`ed
+        # If the values contain <unset>, a trial can assume any value.
+        parameter_values = {
             k: v
             for k, v in self.configurator.parameter_values.items()
-            if k not in exclude
+            if (k not in exclude) and (unset not in v)
         }
 
-        exclude = exclude.union(self.configurator.parameter_values.keys())
-
         conf_parameters = configuration.get("parameters", {})
 
         # Check if all configured parameters are contained
         if any(
             k not in conf_parameters or conf_parameters[k] not in v
-            for k, v in values.items()
+            for k, v in parameter_values.items()
         ):
             return False
 
-        parent_params = {k: v for k, v in conf_parameters.items() if k not in values}
+        parent_params = {
+            k: v for k, v in conf_parameters.items() if k not in parameter_values
+        }
 
         # Let parents check the rest of the configuration
+        exclude = exclude.union(self.configurator.parameter_values.keys())
         return self.parent.contains_subset_of(
             dict(configuration, parameters=parent_params), exclude=exclude
         )
@@ -202,7 +205,7 @@ def contains_superset_of(self, configuration: Mapping) -> bool:
         Return True if there exists a sample that is a superset of `configuration`.
 
         - `configuration` does not match if it contains additional keys not produced by the sampler (or its parents).
-        - `configuration` matches  if it lacks keys produced by the sampler.
+        - `configuration` matches if it lacks keys produced by the sampler.
         - `configuration` does not match if values for existing keys are different.
         """
 

tests/core/test_configurators.py

@@ -20,13 +20,18 @@ def test_empty_parameter_product():
 
 
 def test_Const():
-    configurator = Const({"a": 1, "b": 2}, c=3)
+    configurator = Const({"a": 1, "b": 2}, c=3, d=unset)
 
     # Test __str__
     str(configurator)
 
     # Assert correct behavior of "parameter_values"
-    assert configurator.parameter_values == {"a": (1,), "b": (2,), "c": (3,)}
+    assert configurator.parameter_values == {
+        "a": (1,),
+        "b": (2,),
+        "c": (3,),
+        "d": (unset,),
+    }
 
     sampler = configurator.build_sampler()
 
@@ -39,19 +44,26 @@ def test_Const():
 
     # Assert exististence of all grid  cells
     assert samples == {
-        (("a", 1), ("b", 2), ("c", 3)),
+        (("a", 1), ("b", 2), ("c", 3), ("d", unset)),
     }
 
 
 @pytest.mark.parametrize("cls", [Grid, RandomGrid])
 def test_Grid(cls):
-    configurator: Union[Grid, RandomGrid] = cls({"a": [1, 2], "b": [3, 4], "c": [0]})
+    configurator: Union[Grid, RandomGrid] = cls(
+        {"a": [1, 2], "b": [3, 4], "c": [0], "d": [0, unset]}
+    )
 
     # Test __str__
     str(configurator)
 
     # Assert correct behavior of "parameter_values"
-    assert configurator.parameter_values == {"a": (1, 2), "b": (3, 4), "c": (0,)}
+    assert configurator.parameter_values == {
+        "a": (1, 2),
+        "b": (3, 4),
+        "c": (0,),
+        "d": (0, unset),
+    }
 
     sampler = configurator.build_sampler()
 
@@ -65,10 +77,14 @@ def test_Grid(cls):
 
     # Assert exististence of all grid  cells
     assert samples == {
-        (("a", 2), ("b", 4), ("c", 0)),
-        (("a", 1), ("b", 4), ("c", 0)),
-        (("a", 2), ("b", 3), ("c", 0)),
-        (("a", 1), ("b", 3), ("c", 0)),
+        (("a", 2), ("b", 4), ("c", 0), ("d", 0)),
+        (("a", 1), ("b", 4), ("c", 0), ("d", 0)),
+        (("a", 2), ("b", 3), ("c", 0), ("d", 0)),
+        (("a", 1), ("b", 3), ("c", 0), ("d", 0)),
+        (("a", 2), ("b", 4), ("c", 0), ("d", unset)),
+        (("a", 1), ("b", 4), ("c", 0), ("d", unset)),
+        (("a", 2), ("b", 3), ("c", 0), ("d", unset)),
+        (("a", 1), ("b", 3), ("c", 0), ("d", unset)),
     }