From 08b71759069b959c78ddb8f7108b53c861a7078e Mon Sep 17 00:00:00 2001
From: Kasdejong <k.j2.de.jong@student.vu.nl>
Date: Tue, 20 Feb 2024 15:05:27 +0100
Subject: [PATCH] Added test for duplicate choice type properties (eg
 deceasedBoolean and deceasedDateTime both set)

---
 .../FhirJsonDeserializationTests.cs           | 28 +++++++++++++++++++
 1 file changed, 28 insertions(+)

diff --git a/src/Hl7.Fhir.Support.Poco.Tests/NewPocoSerializers/FhirJsonDeserializationTests.cs b/src/Hl7.Fhir.Support.Poco.Tests/NewPocoSerializers/FhirJsonDeserializationTests.cs
index c260040a74..c0f074697d 100644
--- a/src/Hl7.Fhir.Support.Poco.Tests/NewPocoSerializers/FhirJsonDeserializationTests.cs
+++ b/src/Hl7.Fhir.Support.Poco.Tests/NewPocoSerializers/FhirJsonDeserializationTests.cs
@@ -1001,6 +1001,34 @@ public void TestDuplicateProperties(string testJson, string[] expectedErrs)
                 assertErrors(dfe.Exceptions, expectedErrs);
             }
         }
+
+        [TestMethod]
+        public void TestDuplicateChoiceTypeEntries()
+        {
+            var scenario = """
+                           {
+                             "resourceType": "Patient",
+                             "deceasedBoolean": true,
+                             "deceasedDateTime": "2022"
+                           }
+                           """;
+            
+            string expected = ERR.DUPLICATE_PROPERTY_CODE;
+
+            var jsonSerializerOptions = new JsonSerializerOptions().ForFhir(typeof(TestPatient).Assembly);
+
+            try
+            {
+                _ = JsonSerializer.Deserialize<TestPatient>(scenario, jsonSerializerOptions);
+                Assert.Fail("Should have encountered errors.");
+            }
+            catch (DeserializationFailedException dfe)
+            {
+                assertErrors(dfe.Exceptions, [expected]);
+            }
+            
+            
+        }
     }
 }
 #nullable restore
\ No newline at end of file