fix: Statement.direction is required

src/ga4gh/va_spec/base/core.py

@@ -989,8 +989,8 @@ class Statement(InformationEntity, BaseModelForbidExtra):
         ...,
         description="A possible fact, the validity of which is assessed and reported by the Statement. A Statement can put forth the proposition as being true, false, or uncertain, and may provide an assessment of the level of confidence/evidence supporting this claim.",
     )
-    direction: Direction | None = Field(
-        default=None,
+    direction: Direction = Field(
+        ...,
         description="A term indicating whether the Statement supports, disputes, or remains neutral w.r.t. the validity of the Proposition it evaluates.",
     )
     strength: MappableConcept | iriReference | None = Field(

tests/test_imports.py

@@ -12,13 +12,15 @@ def test_public_modules_import_and_resolve_recursive_models():
 import ga4gh.va_spec.acmg_2015
 import ga4gh.va_spec.base
 import ga4gh.va_spec.ccv_2022
-from ga4gh.va_spec.base import Statement
+from ga4gh.va_spec.base import Direction, Statement
 
 Statement(
+    direction=Direction.SUPPORTS,
     proposition={"type": "Proposition", "subject": {}, "predicate": "relatedTo", "object": {}},
     hasEvidence=[
         {
             "type": "Statement",
+            "direction": "supports",
             "proposition": {"type": "Proposition", "subject": {}, "predicate": "relatedTo", "object": {}},
         }
     ],

tests/validation/test_va_spec_models.py

@@ -484,7 +484,9 @@ def test_variant_pathogenicity_stmt(pathogenicity_evidence_line_params):
 
 def test_statement_proposition_accepts_iri_reference():
     """Statements may reference a proposition instead of embedding one."""
-    statement = Statement(proposition="propositions.json#/1")
+    statement = Statement(
+        proposition="propositions.json#/1", direction=Direction.SUPPORTS
+    )
 
     assert statement.proposition == iriReference(root="propositions.json#/1")
 
@@ -495,7 +497,7 @@ def test_base_statement_and_evidence_line_accept_generic_propositions():
         type="Proposition", subject={}, predicate="relatedTo", object={}
     )
 
-    statement = Statement(proposition=proposition)
+    statement = Statement(proposition=proposition, direction=Direction.SUPPORTS)
     evidence_line = EvidenceLine(
         directionOfEvidenceProvided="neutral", targetProposition=proposition
     )
@@ -656,6 +658,7 @@ def test_pathogenicity_profile_accepts_schema_permitted_references():
         strengthOfEvidenceProvided="strengths.json#/1",
     )
     statement = VariantPathogenicityStatement(
+        direction=Direction.SUPPORTS,
         proposition="propositions.json#/1",
         strength="strengths.json#/1",
         classification="classifications.json#/1",
@@ -799,6 +802,7 @@ def test_oncogenicity_profile_accepts_schema_permitted_references():
         strengthOfEvidenceProvided="strengths.json#/1",
     )
     statement = VariantOncogenicityStatement(
+        direction=Direction.SUPPORTS,
         proposition="propositions.json#/1",
         strength="strengths.json#/1",
         classification="classifications.json#/1",
@@ -844,6 +848,7 @@ def test_variant_onco_el_no_evidence_outcome():
 def test_aac_profile_accepts_schema_permitted_references():
     """AAC models accept opaque classification and strength IRIs."""
     statement = VariantClinicalSignificanceStatement(
+        direction=Direction.SUPPORTS,
         proposition="propositions.json#/1",
         strength="strengths.json#/1",
         classification="classifications.json#/1",