public static void CombiningSingleResolverProducesSameAnswersAsInputResolver()
{
JsonSerializerOptions options = new();
JsonTypeInfo t1 = JsonTypeInfo.CreateJsonTypeInfo(typeof(int), options);
JsonTypeInfo t2 = JsonTypeInfo.CreateJsonTypeInfo(typeof(uint), options);
JsonTypeInfo t3 = JsonTypeInfo.CreateJsonTypeInfo(typeof(string), options);
// we return same instance for easier comparison
TestResolver resolver = new((t, o) =>
{
Assert.Same(o, options);
if (t == typeof(int))
{
return(t1);
}
if (t == typeof(uint))
{
return(t2);
}
if (t == typeof(string))
{
return(t3);
}
return(null);
});
IJsonTypeInfoResolver combined = JsonTypeInfoResolver.Combine(resolver);
Assert.Same(t1, combined.GetTypeInfo(typeof(int), options));
Assert.Same(t2, combined.GetTypeInfo(typeof(uint), options));
Assert.Same(t3, combined.GetTypeInfo(typeof(string), options));
Assert.Null(combined.GetTypeInfo(typeof(char), options));
Assert.Null(combined.GetTypeInfo(typeof(StringBuilder), options));
}
public static void CombiningZeroResolversProducesValidResolver()
{
IJsonTypeInfoResolver resolver = JsonTypeInfoResolver.Combine();
Assert.NotNull(resolver);
// calling twice to make sure we get the same answer
Assert.Null(resolver.GetTypeInfo(null, null));
Assert.Null(resolver.GetTypeInfo(null, null));
}
public ContextWithModifiers(JsonSerializerContext context, Action <JsonTypeInfo>[] modifiers)
{
_context = context;
_modifiers = modifiers;
}
public static void CombiningUsesAndRespectsAllResolversInOrder()
{
JsonSerializerOptions options = new();
JsonTypeInfo t1 = JsonTypeInfo.CreateJsonTypeInfo(typeof(int), options);
JsonTypeInfo t2 = JsonTypeInfo.CreateJsonTypeInfo(typeof(uint), options);
JsonTypeInfo t3 = JsonTypeInfo.CreateJsonTypeInfo(typeof(string), options);
int resolverId = 1;
// we return same instance for easier comparison
TestResolver r1 = new((t, o) =>
{
Assert.Equal(1, resolverId);
Assert.Same(o, options);
if (t == typeof(int))
{
return(t1);
}
resolverId++;
return(null);
});
TestResolver r2 = new((t, o) =>
{
Assert.Equal(2, resolverId);
Assert.Same(o, options);
if (t == typeof(uint))
{
return(t2);
}
resolverId++;
return(null);
});
TestResolver r3 = new((t, o) =>
{
Assert.Equal(3, resolverId);
Assert.Same(o, options);
if (t == typeof(string))
{
return(t3);
}
resolverId++;
return(null);
});
IJsonTypeInfoResolver combined = JsonTypeInfoResolver.Combine(r1, r2, r3);
resolverId = 1;
Assert.Same(t1, combined.GetTypeInfo(typeof(int), options));
Assert.Equal(1, resolverId);
resolverId = 1;
Assert.Same(t2, combined.GetTypeInfo(typeof(uint), options));
Assert.Equal(2, resolverId);
resolverId = 1;
Assert.Same(t3, combined.GetTypeInfo(typeof(string), options));
Assert.Equal(3, resolverId);
resolverId = 1;
Assert.Null(combined.GetTypeInfo(typeof(char), options));
Assert.Equal(4, resolverId);
resolverId = 1;
Assert.Null(combined.GetTypeInfo(typeof(StringBuilder), options));
Assert.Equal(4, resolverId);
}
