[Resolver] Basic Logic for Filtering & Sorting added

pyproject.toml

@@ -30,6 +30,8 @@ maintainers = [
 ]
 dependencies = [
     "importlib-metadata; python_version < '3.10'",
+    "platformdirs>=4.3,<5.0",
+    "tomli; python_version < '3.11'",
     "typing-extensions; python_version < '3.11'",
 ]
 
@@ -44,16 +46,18 @@ dev = [
     "ruff>=0.10,<1.0",
 ]
 test = [
+    "deepdiff>=8.0,<9.0",
     "jsondiff>=2.2,<2.3",
     "hypothesis>=6.0.0,<7",
+    "parameterized>=0.9.0,<0.10",
     "pytest>=8.0.0,<9.0.0",
     "pytest-cov>=5.0.0,<6.0.0",
     "pytest-dotenv>=0.5.0,<1.0.0",
     "pytest-env>=1.1.3,<2.0.0",
     "pytest-mock>=3.14.0,<4.0.0",
     "pytest-runner>=6.0.0,<7.0.0",
     "pytest-ordering>=0.6,<1.0.0",
-    "parameterized>=0.9.0,<0.10",
+    "tomli_w>=1.2,<1.3",
 ]
 
 [project.scripts]

tests/models/test_configuration.py

@@ -0,0 +1,107 @@
+from __future__ import annotations
+
+import pytest
+from hypothesis import given
+from hypothesis import strategies as st
+
+from variantlib.constants import VALIDATION_FEATURE_REGEX
+from variantlib.constants import VALIDATION_NAMESPACE_REGEX
+from variantlib.constants import VALIDATION_VALUE_REGEX
+from variantlib.models.configuration import VariantConfiguration
+from variantlib.models.variant import VariantFeature
+from variantlib.models.variant import VariantProperty
+
+
+def test_default_configuration():
+    config = VariantConfiguration.default()
+    assert config.namespaces_priority == []
+    assert config.features_priority == []
+    assert config.property_priority == []
+
+
+@pytest.mark.parametrize(
+    "config_params",
+    [
+        {
+            "namespaces": ["OmniCorp"],
+            "features": [],
+            "properties": [],
+        },
+        {
+            "namespaces": ["OmniCorp"],
+            "features": ["OmniCorp::custom_feat"],
+            "properties": ["OmniCorp::custom_feat::secret_value"],
+        },
+        {
+            "namespaces": ["OmniCorp", "AcmeCorp"],
+            "features": ["OmniCorp::custom_feat", "AcmeCorp :: custom_feat"],
+            "properties": [
+                "OmniCorp :: custom_featA  ::   secret_value",
+                "OmniCorp :: custom_featB::   secret_value",
+                "AcmeCorp::custom_feat::secret_value",
+            ],
+        },
+    ],
+)
+def test_from_toml_config(config_params: dict[str, list[str]]):
+    _ = VariantConfiguration.from_toml_config(
+        namespaces_priority=config_params["namespaces"],
+        features_priority=config_params["features"],
+        property_priority=config_params["properties"],
+    )
+
+
+@given(st.lists(st.from_regex(VALIDATION_NAMESPACE_REGEX)))
+def test_namespaces_priority_validation(namespaces: list[str]):
+    config = VariantConfiguration(namespaces_priority=namespaces)
+    assert config.namespaces_priority == namespaces
+
+
+@given(
+    st.lists(st.from_regex(VALIDATION_NAMESPACE_REGEX)),
+    st.lists(
+        st.builds(
+            VariantFeature,
+            namespace=st.just("OmniCorp"),
+            feature=st.from_regex(VALIDATION_FEATURE_REGEX),
+        )
+    ),
+)
+def test_features_priority_validation(
+    namespaces: list[str], features: list[VariantFeature]
+):
+    config = VariantConfiguration(
+        namespaces_priority=namespaces, features_priority=features
+    )
+    assert config.features_priority == features
+
+
+@given(
+    st.lists(st.from_regex(VALIDATION_NAMESPACE_REGEX)),
+    st.lists(
+        st.builds(
+            VariantFeature,
+            namespace=st.from_regex(VALIDATION_NAMESPACE_REGEX),
+            feature=st.from_regex(VALIDATION_FEATURE_REGEX),
+        )
+    ),
+    st.lists(
+        st.builds(
+            VariantProperty,
+            namespace=st.from_regex(VALIDATION_NAMESPACE_REGEX),
+            feature=st.from_regex(VALIDATION_FEATURE_REGEX),
+            value=st.from_regex(VALIDATION_VALUE_REGEX),
+        )
+    ),
+)
+def test_property_priority_validation(
+    namespaces: list[str],
+    features: list[VariantFeature],
+    properties: list[VariantProperty],
+):
+    config = VariantConfiguration(
+        namespaces_priority=namespaces,
+        features_priority=features,
+        property_priority=properties,
+    )
+    assert config.property_priority == properties