public void TestSerialization()
{
var serializedODataEntity = @"{ a: 2, b: 'abc', c: { x: 2 } }";
var entity = JsonConvert.DeserializeObject <ODataEntity>(serializedODataEntity);
entity.Get <ODataEntity>("C").Get <int>("X").ShouldEqual(2);
var @object = JsonConvert.DeserializeObject <ODataObject>(JsonConvert.SerializeObject(entity));
((ODataEntity)@object).Get <ODataEntity>("C").Get <int>("X").ShouldEqual(2);
JsonConvert.DeserializeObject <ODataObject>("null").ShouldEqual(null);
JsonConvert.DeserializeObject <ODataValue>("1").Value.ShouldEqual(1L);
JsonConvert.SerializeObject(ODataValue.FromObject("abc")).ShouldEqual("\"abc\"");
}
public void TestFromObject()
{
var v1 = ODataValue.FromObject(1);
v1.Value.ShouldEqual(1);
var v2 = ODataValue.FromObject(null);
v2.ShouldEqual(null);
var v3 = ODataValue.FromObject(v1);
ReferenceEquals(v1, v3).ShouldEqual(true);
UnitTestHelpers.AssertThrows <ArgumentException>(() => ODataValue.FromObject(new { a = 2 }));
UnitTestHelpers.AssertThrows <ArgumentException>(() => ODataValue.FromObject(new ODataEntity(Enumerable.Empty <KeyValuePair <string, object> >())));
}
public void TestGetValuesFromODataEntity()
{
var entity = new ODataEntity(new Dictionary <string, object>
{
{ "A", null },
{ "B", 1 },
{ "C", new ODataEntity(new Dictionary <string, object> {
{ "X", "abc" }
}) },
{ "D", ODataValue.FromObject(-1) },
{ "F", 1.5 },
});
entity.Get <string>("A").ShouldEqual(null);
entity.Get <int>("b").ShouldEqual(1);
entity.Get <int?>("b").ShouldEqual(1);
entity.Get <ODataValue>("B").Value.ShouldEqual(1);
entity.Get <ODataEntity>("c").Get <string>("x").ShouldEqual("abc");
entity.Get <ODataObject>("C").GetType().ShouldEqual(typeof(ODataEntity));
entity.Get <int>("d").ShouldEqual(-1);
UnitTestHelpers.AssertThrows <InvalidCastException>(() => entity.Get <int>("a"));
UnitTestHelpers.AssertThrows <InvalidCastException>(() => entity.Get <long>("F"));
}
/// <summary>
/// Gets the strongly-typed value of the named property. This method can be used in OData queries as long as <paramref name="propertyName"/>
/// is a constant or local variable capture
/// </summary>
/// <typeparam name="TProperty">the property type</typeparam>
/// <param name="propertyName">the property name</param>
/// <returns>the property value</returns>
public TProperty Get <TProperty>(string propertyName)
{
Throw.IfNull(propertyName, "propertyName");
object result;
if (!this.Values.TryGetValue(propertyName, out result))
{
throw new ArgumentException("The entity does not contain a value for property '" + propertyName + "'!");
}
if (result == null)
{
if (!typeof(TProperty).CanBeNull())
{
throw new InvalidCastException(string.Format(
"Property '{0}' has a null value and cannot be cast to requested type '{1}'",
propertyName,
typeof(TProperty)
));
}
return(default(TProperty)); // always null due to check above
}
if (result is TProperty)
{
return((TProperty)result);
}
var tProperty = typeof(TProperty);
if (tProperty.IsNumeric() && result.GetType().IsNumeric())
{
try
{
return(NumberHelper.CheckedConvert <TProperty>(result));
}
catch (Exception ex)
{
throw new InvalidCastException(
string.Format(
"Failed to convert property '{0}' value '{1}' of type {2} to requested type {3}",
propertyName,
result,
result.GetType(),
tProperty
),
ex
);
}
}
if (typeof(ODataObject).IsAssignableFrom(tProperty))
{
// at this point, we already know it's not ODataEntity since that would be
// handled above. Thus, we can just handle ODataValue
return((TProperty)(object)ODataValue.FromObject(result));
}
throw new InvalidCastException(string.Format(
"value '{0}' of type {1} for property '{2}' is not compatible with requested type {3}",
result,
result.GetType(), // already checked for null above!
propertyName,
tProperty
));
}
