/// <summary>
/// Performs the tasks needed to configure Web API for use with the Order Fulfillment
/// API offerings.
/// </summary>
///
/// <param name="config">The HTTP configuration to be used with Web API.</param>
///
internal static void ConfigureWebApi(HttpConfiguration config)
{
if (config == null)
{
throw new ArgumentNullException(nameof(config));
}
// Register any route constraints that have been discovered.
var constraintLocator = new RouteConstraintLocator();
var constraintResolver = new DefaultInlineConstraintResolver();
foreach (var constraintPair in constraintLocator.DiscoveredConstraints)
{
constraintResolver.ConstraintMap.Add(constraintPair.Key, constraintPair.Value);
}
// Map the API routes that were defined using attributes, using the discovered constraints.
config.MapHttpAttributeRoutes(constraintResolver);
// Configure the JSON serializer to use enumeration names (instead of index) and adhere to
// camel casing for serialized members.
var jsonFormatter = config.Formatters.JsonFormatter;
jsonFormatter.SerializerSettings.ContractResolver = new CamelCasePropertyNamesContractResolver();
jsonFormatter.SerializerSettings.Converters.Add(new StringEnumConverter());
// Clear all of the other formatters, supporting only JSON.
config.Formatters.Clear();
config.Formatters.Add(jsonFormatter);
}
public void LocatorFindsConstraints()
{
var locator = new RouteConstraintLocator(Assembly.GetExecutingAssembly());
locator.DiscoveredConstraints.Should().NotBeNull("because there are classes decorated with constraints");
locator.DiscoveredConstraints.Count.Should().BeGreaterOrEqualTo(1, "because at least one class was decorated with constraints");
}
public void LocatorAllowsMultipleDecorators()
{
var locator = new RouteConstraintLocator(Assembly.GetExecutingAssembly());
locator.DiscoveredConstraints.Where(pair => ((pair.Key == "C") || (pair.Key == "D")))
.Select(pair => pair.Value.Name)
.Distinct()
.Should().HaveCount(1, "because TestConstraintC should handle two constraints");
}
public void LocatorCorrectlyAssociatesConstraints()
{
var locator = new RouteConstraintLocator(Assembly.GetExecutingAssembly());
foreach (var constraintPair in locator.DiscoveredConstraints.Where(pair => pair.Key != "D"))
{
constraintPair.Value.Name.EndsWith(constraintPair.Key).Should().BeTrue("because the constraint name should be associated with the decorated class");
}
}
