✨ Resolved issue #96 as FHIR compatible datetime representer has been…

… created.

* tests coverages are added.
* changes log updated.

HISTORY.rst

@@ -5,7 +5,7 @@ History
 6.2.2 (unreleased)
 ------------------
 
-- Nothing changed yet.
+- Issue `#96 https://github.com/nazrulworld/fhir.resources/issues/96`_, fixes datetime's ISO format representation for YAML. [nazrulworld]
 
 
 6.2.1 (2022-01-14)

fhir/resources/utils/yaml.py

@@ -1,4 +1,5 @@
 # _*_ coding: utf-8 _*_
+import datetime
 from collections import OrderedDict
 from decimal import Decimal
 
@@ -25,11 +26,17 @@ def represent_decimal(self, data):
         data = float(data)
         return self.represent_float(data)
 
+    def represent_datetime(self, data):
+        """Issue #96, we are using T separator for ISO format"""
+        value = data.isoformat(sep="T")
+        return self.represent_scalar("tag:yaml.org,2002:timestamp", value)
+
 
 BaseRepresenter.add_representer(Decimal, Representer.represent_decimal)
 # important! we don't want explicit tag of OrderedDict
 # (tag:yaml.org,2002:python/object/apply:collections.OrderedDict)
 BaseRepresenter.add_representer(OrderedDict, SafeRepresenter.represent_dict)
+BaseRepresenter.add_representer(datetime.datetime, Representer.represent_datetime)
 
 
 def yaml_loads(stream, loader=None):

tests/test_issues.py

@@ -2,6 +2,7 @@
 from pydantic import ValidationError
 
 from fhir.resources.patient import Patient
+from fhir.resources.period import Period
 
 __author__ = "Md Nazrul Islam<[email protected]>"
 
@@ -14,7 +15,7 @@ def test_issue_74():
 
 
 def test_issue_64():
-    """Allow empty string """
+    """Allow empty string"""
     try:
         Patient(
             active=True,
@@ -57,3 +58,20 @@ def test_issue_64():
         # should not raise validation error
         assert 1 == 2, "Code should not come here, we allow empty string"
     String.configure_empty_str(allow=False)
+
+
+def test_issue_96():
+    """YAML datetime serialization"""
+    from datetime import datetime
+
+    pd = Period(
+        end=datetime(2022, 3, 29, 11, 48, 37, 482248),
+        start=datetime(2022, 3, 28, 23, 48, 37, 481725),
+    )
+    assert "2022-03-28T23:48:37.481725" in pd.yaml()
+    try:
+        "2022-03-28T23:48:37.481725" in Period.parse_raw(
+            pd.yaml(), content_type="text/yaml"
+        ).json()
+    except ValidationError:
+        raise AssertionError("Code should not come here")