/// <summary>
/// Tests that a specific property is deserialized correctly.
/// </summary>
/// <param name="item">The item containing the current value.</param>
/// <param name="property">The property to inspect.</param>
/// <param name="testValue">The test value, must not match the current value.</param>
/// <typeparam name="TValue"></typeparam>
protected void TestThatPropertyIsDeserialized <TValue>(TInterface item, Expression <Func <TInterface, TValue> > property, TValue testValue)
{
// params cannot be null.
Assert.NotNull(item);
Assert.NotNull(property);
// member expression must be a property expression.
var prop = GetPropertyInfo(property);
Assert.NotNull(prop);
AdjustProperties(item);
// property must be in the list of deserialized properties
var propInfo = Properties.FirstOrDefault(x => x.Deserialize && x.Property.Name == prop.Name);
Assert.NotNull(propInfo);
// test value must differ from current value.
Assert.NotEqual(testValue, prop.GetValue(item));
var jo = JObject.FromObject(item);
if (propInfo.Serialize)
{
// property should be in serialized JSON.
Assert.True(jo.ContainsKey(propInfo.Name));
}
else
{
// property should not be in serialized JSON.
Assert.False(jo.ContainsKey(propInfo.Name));
}
// set property in serialized JSON.
if (testValue.GetType().IsPrimitive || testValue is string || testValue is DateTime || testValue is Guid)
{
jo[propInfo.Name] = new JValue(testValue);
}
else
{
jo[propInfo.Name] = JObject.FromObject(testValue);
}
Assert.True(jo.ContainsKey(propInfo.Name));
// deserialize the object.
var type = InternalModel.TypeFor(typeof(TInterface));
var newItem = jo.ToObject(type) as TInterface;
Assert.NotNull(newItem);
// the new object should have the test value.
Assert.Equal(testValue, prop.GetValue(newItem));
// the original object should not.
Assert.NotEqual(testValue, prop.GetValue(item));
}
protected Model_Should()
{
ModelType = InternalModel.TypeFor(InterfaceType);
var tmp = InterfaceType
.GetProperties(BindingFlags.Public | BindingFlags.Instance)
.OrderBy(x => x.Name)
.Select(x => new PropInfo()
{
Property = x
})
.ToArray();
foreach (var p in tmp)
{
var sib = ModelType.GetProperty(p.Property.Name);
var attr = sib?.GetCustomAttribute <JsonPropertyAttribute>();
p.Name = attr?.PropertyName ?? p.Property.Name;
p.Deserialize = p.Property.CanRead && (sib.GetCustomAttribute <JsonIgnoreAttribute>() is null);
p.Serialize = p.Deserialize && p.Property.CanWrite;
}
Properties = tmp.Cast <IPropInfo>().ToArray();
}