extension for ref resolve, explode, implode, weave, tangle

tests/test_content_class_resolution.py

@@ -0,0 +1,106 @@
+from pathlib import Path
+
+from click.testing import CliRunner
+
+from markitect_tool.cli import main
+from markitect_tool.content_class import load_content_classes
+
+
+def test_c3_linearization_for_diamond_inheritance():
+    registry = load_content_classes(
+        {
+            "classes": {
+                "base": {"slots": {"sections": ["Overview"]}},
+                "left": {"extends": ["base"], "slots": {"sections": ["Left"]}},
+                "right": {"extends": ["base"], "slots": {"sections": ["Right"]}},
+                "leaf": {"extends": ["left", "right"], "slots": {"title": "Leaf"}},
+            }
+        }
+    )
+
+    assert registry.linearize("leaf") == ["leaf", "left", "right", "base"]
+
+
+def test_compose_merges_slots_with_explicit_policies():
+    registry = load_content_classes(
+        {
+            "classes": {
+                "base": {
+                    "slots": {
+                        "sections": ["Overview"],
+                        "assertions": {"tone": "plain", "depth": "short"},
+                    }
+                },
+                "market": {
+                    "extends": ["base"],
+                    "slots": {
+                        "sections": ["Pricing"],
+                        "assertions": {"depth": "detailed"},
+                    },
+                    "merge_policies": {
+                        "sections": "append",
+                        "assertions": "deep_merge",
+                    },
+                },
+                "instance": {
+                    "extends": ["market"],
+                    "slots": {"sections": ["Risks"]},
+                    "merge_policies": {"sections": "append"},
+                },
+            }
+        }
+    )
+
+    result = registry.compose("instance")
+
+    assert result.valid
+    assert result.slots["sections"] == ["Overview", "Pricing", "Risks"]
+    assert result.slots["assertions"] == {"tone": "plain", "depth": "detailed"}
+
+
+def test_compose_reports_error_on_conflict():
+    registry = load_content_classes(
+        {
+            "classes": {
+                "base": {"slots": {"owner": "A"}},
+                "instance": {
+                    "extends": ["base"],
+                    "slots": {"owner": "B"},
+                    "merge_policies": {"owner": "error_on_conflict"},
+                },
+            }
+        }
+    )
+
+    result = registry.compose("instance")
+
+    assert not result.valid
+    assert result.diagnostics[0].code == "content_class.merge_conflict"
+
+
+def test_mkt_class_resolve_outputs_text(tmp_path: Path):
+    class_file = tmp_path / "classes.yaml"
+    class_file.write_text(
+        """classes:
+  base:
+    slots:
+      sections:
+        - Overview
+  instance:
+    extends:
+      - base
+    slots:
+      sections:
+        - Risks
+    merge_policies:
+      sections: append
+""",
+        encoding="utf-8",
+    )
+
+    result = CliRunner().invoke(main, ["class", "resolve", str(class_file), "instance"])
+
+    assert result.exit_code == 0
+    assert "linearization: instance -> base" in result.output
+    assert "Overview" in result.output
+    assert "Risks" in result.output