public async Task GetEntryWithIfNoneMatchShouldReturnNotModifiedETagsTest_ForDouble()
{
string eTag;
var getUri = this.BaseAddress + "/double/ETagsCustomers?$format=json";
using (var response = await Client.GetAsync(getUri))
{
Assert.True(response.IsSuccessStatusCode);
var json = await response.Content.ReadAsAsync <JObject>();
var result = json.GetValue("value") as JArray;
Assert.NotNull(result);
// check the first
eTag = result[0]["@odata.etag"].ToString();
Assert.False(String.IsNullOrEmpty(eTag));
Assert.Equal("W/\"Mi4w\"", eTag);
EntityTagHeaderValue parsedValue;
Assert.True(EntityTagHeaderValue.TryParse(eTag, out parsedValue));
HttpConfiguration config = new HttpConfiguration();
IETagHandler handler = config.GetETagHandler();
IDictionary <string, object> tags = handler.ParseETag(parsedValue);
KeyValuePair <string, object> pair = Assert.Single(tags);
Single value = Assert.IsType <Single>(pair.Value);
Assert.Equal((Single)2.0, value);
}
var getRequestWithEtag = new HttpRequestMessage(HttpMethod.Get, this.BaseAddress + "/double/ETagsCustomers(0)");
getRequestWithEtag.Headers.IfNoneMatch.ParseAdd(eTag);
using (var response = await Client.SendAsync(getRequestWithEtag))
{
Assert.Equal(HttpStatusCode.NotModified, response.StatusCode);
}
}
public static ETag GetETag(this HttpRequest request, EntityTagHeaderValue entityTagHeaderValue)
{
if (request == null)
{
throw Error.ArgumentNull("request");
}
if (entityTagHeaderValue != null)
{
if (entityTagHeaderValue.Equals(EntityTagHeaderValue.Any))
{
return(new ETag {
IsAny = true
});
}
// get the etag handler, and parse the etag
IETagHandler etagHandler = request.GetRequestContainer().GetRequiredService <IETagHandler>();
IDictionary <string, object> properties = etagHandler.ParseETag(entityTagHeaderValue) ?? new Dictionary <string, object>();
IList <object> parsedETagValues = properties.Select(property => property.Value).AsList();
// get property names from request
ODataPath odataPath = request.ODataFeature().Path;
IEdmModel model = request.GetModel();
IEdmNavigationSource source = odataPath.NavigationSource;
if (model != null && source != null)
{
IList <IEdmStructuralProperty> concurrencyProperties = model.GetConcurrencyProperties(source).ToList();
IList <string> concurrencyPropertyNames = concurrencyProperties.OrderBy(c => c.Name).Select(c => c.Name).AsList();
ETag etag = new ETag();
if (parsedETagValues.Count != concurrencyPropertyNames.Count)
{
etag.IsWellFormed = false;
}
IEnumerable <KeyValuePair <string, object> > nameValues = concurrencyPropertyNames.Zip(
parsedETagValues,
(name, value) => new KeyValuePair <string, object>(name, value));
foreach (var nameValue in nameValues)
{
IEdmStructuralProperty property = concurrencyProperties.SingleOrDefault(e => e.Name == nameValue.Key);
Contract.Assert(property != null);
Type clrType = EdmLibHelpers.GetClrType(property.Type, model);
Contract.Assert(clrType != null);
if (nameValue.Value != null)
{
Type valueType = nameValue.Value.GetType();
etag[nameValue.Key] = valueType != clrType
? Convert.ChangeType(nameValue.Value, clrType, CultureInfo.InvariantCulture)
: nameValue.Value;
}
else
{
etag[nameValue.Key] = nameValue.Value;
}
}
return(etag);
}
}
return(null);
}