Changed the runtime type for the Date scalar in Strawberry Shake (#8009)

Author: glen-84

src/StrawberryShake/Client/src/Core/Serialization/DateSerializer.cs

@@ -6,7 +6,7 @@ namespace StrawberryShake.Serialization;
 /// <summary>
 /// This serializer handles date scalars.
 /// </summary>
-public class DateSerializer : ScalarSerializer<string, DateTime>
+public class DateSerializer : ScalarSerializer<string, DateOnly>
 {
     private const string _dateFormat = "yyyy-MM-dd";
 
@@ -15,32 +15,31 @@ public DateSerializer(string typeName = BuiltInScalarNames.Date)
     {
     }
 
-    public override DateTime Parse(string serializedValue)
+    public override DateOnly Parse(string serializedValue)
     {
         if (TryDeserializeFromString(serializedValue, out var date))
         {
             return date.Value;
         }
 
-        throw ThrowHelper.DateTimeSerializer_InvalidFormat(serializedValue);
+        throw ThrowHelper.DateSerializer_InvalidFormat(serializedValue);
     }
 
-    protected override string Format(DateTime runtimeValue)
+    protected override string Format(DateOnly runtimeValue)
     {
-        return runtimeValue.Date.ToString(_dateFormat, CultureInfo.InvariantCulture);
+        return runtimeValue.ToString(_dateFormat, CultureInfo.InvariantCulture);
     }
 
     private static bool TryDeserializeFromString(
         string? serialized,
-        [NotNullWhen(true)] out DateTime? value)
+        [NotNullWhen(true)] out DateOnly? value)
     {
-        if (DateTime.TryParse(
+        if (DateOnly.TryParseExact(
             serialized,
-            CultureInfo.InvariantCulture,
-            DateTimeStyles.AssumeLocal,
-            out var dateTime))
+            _dateFormat,
+            out var date))
         {
-            value = dateTime.Date;
+            value = date;
             return true;
         }
 

src/StrawberryShake/Client/test/Core.Tests/Serialization/DateSerializerTests.cs

@@ -16,9 +16,9 @@ public void Parse()
         var result = Serializer.Parse(value);
 
         // assert
-        Assert.Equal(2012, result.Date.Year);
-        Assert.Equal(11, result.Date.Month);
-        Assert.Equal(29, result.Date.Day);
+        Assert.Equal(2012, result.Year);
+        Assert.Equal(11, result.Month);
+        Assert.Equal(29, result.Day);
     }
 
     [Fact]
@@ -37,7 +37,7 @@ public void Format_Null()
     public void Format_Value()
     {
         // arrange
-        var value = new DateTime(2012, 11, 29);
+        var value = new DateOnly(2012, 11, 29);
 
         // act
         var result = Serializer.Format(value);

src/StrawberryShake/CodeGeneration/src/CodeGeneration/Utilities/SchemaHelper.cs

@@ -245,7 +245,7 @@ private static void AddDefaultScalarInfos(
         TryAddLeafType(leafTypes, "Uuid", TypeNames.Guid, TypeNames.String);
         TryAddLeafType(leafTypes, "Guid", TypeNames.Guid, TypeNames.String);
         TryAddLeafType(leafTypes, ScalarNames.DateTime, TypeNames.DateTimeOffset);
-        TryAddLeafType(leafTypes, ScalarNames.Date, TypeNames.DateTime);
+        TryAddLeafType(leafTypes, ScalarNames.Date, TypeNames.DateOnly);
         TryAddLeafType(leafTypes, ScalarNames.LocalDate, TypeNames.DateOnly);
         TryAddLeafType(leafTypes, ScalarNames.LocalDateTime, TypeNames.DateTime);
         TryAddLeafType(leafTypes, ScalarNames.LocalTime, TypeNames.TimeOnly);