VED-891 Vaccine Product Term (#961)

Author: JamesW1-NHS

backend/src/models/fhir_immunization_pre_validators.py

@@ -98,6 +98,7 @@ def validate(self):
             self.pre_validate_vaccination_procedure_code,
             self.pre_validate_vaccination_procedure_display,
             self.pre_validate_vaccine_code,
+            self.pre_validate_vaccine_display,
         ]
 
         for method in validation_methods:
@@ -976,3 +977,16 @@ def pre_validate_vaccine_code(self, values: dict) -> dict:
             PreValidation.for_snomed_code(field_value, field_location)
         except (KeyError, IndexError):
             pass
+
+    def pre_validate_vaccine_display(self, values: dict) -> dict:
+        """
+        Pre-validate that, if vaccineCode.coding[?(@.system=='http://snomed.info/sct')].display
+        (legacy CSV field : VACCINE_PRODUCT_TERM) exists, then it is a non-empty string
+        """
+        url = Urls.snomed
+        field_location = f"vaccineCode.coding[?(@.system=='{url}')].display"
+        try:
+            field_value = [x for x in values["vaccineCode"]["coding"] if x.get("system") == url][0]["display"]
+            PreValidation.for_string(field_value, field_location)
+        except (KeyError, IndexError):
+            pass

backend/tests/test_immunization_pre_validator.py

@@ -1404,6 +1404,14 @@ def test_pre_validate_vaccine_code(self):
                 actual_error_messages,
             )
 
+    def test_pre_validate_vaccine_display(self):
+        """Test test_pre_validate_vaccine_display accepts valid values and rejects invalid values"""
+        ValidatorModelTests.test_string_value(
+            self,
+            field_location="vaccineCode.coding[?(@.system=='http://snomed.info/sct')].display",
+            valid_strings_to_test=["DUMMY"],
+        )
+
     def test_pre_validate_vaccination_procedure_display(self):
         """Test test_pre_validate_vaccination_procedure_display accepts valid values and rejects invalid values"""
         ValidatorModelTests.test_string_value(