public async Task ClientRequest_WithExpires_AddsToCache()
{
// arrange
var state = new TestState();
var expectedResponse = state.AddHttpRequest(1);
expectedResponse.Content.Headers.Expires = DateTime.UtcNow.AddDays(1);
// act
var response = await state.ExecuteRequest();
// assert
Predicate <Tuple <string, CachingHttpClient.CachedValues> > assert = AssertResult;
state.Dependencies
.Verify(x => x.Cache.Put(Match.Create(assert)), Times.Once);
bool AssertResult(Tuple <string, CachingHttpClient.CachedValues> input)
{
CustomAssert.AssertDateAlmost(
expectedResponse.Content.Headers.Expires.Value.UtcDateTime,
((Headers.CacheSettings.ExpirySettings.Soft)input.Item2.CacheSettings.ExpirySettings).Item.MustRevalidateAtUtc);
return(true);
}
}
public async Task ClientRequest_WithMaxAge_AddsToCache()
{
// arrange
var state = new TestState();
var expectedResponse = state.AddHttpRequest(1);
expectedResponse.Headers.CacheControl = new CacheControlHeaderValue
{
MaxAge = TimeSpan.FromDays(1)
};
// act
var response = await state.ExecuteRequest();
// assert
Predicate <Tuple <string, CachingHttpClient.CachedValues> > assert = AssertResult;
state.Dependencies
.Verify(x => x.Cache.Put(Match.Create(assert)), Times.Once);
bool AssertResult(Tuple <string, CachingHttpClient.CachedValues> input)
{
Assert.AreEqual("G$:$:http://www.com/", input.Item1);
CustomAssert.AssertCachedResponse(1, input.Item2.HttpResponse);
CustomAssert.AssertDateAlmost(
DateTime.UtcNow.AddDays(1),
((Headers.CacheSettings.ExpirySettings.HardUtc)input.Item2.CacheSettings.ExpirySettings).Item);
return(true);
}
}
public async Task ClientRequest_WithWeakETag_Caches()
{
// arrange
var state = new TestState();
var expectedResponse = state.AddHttpRequest(1);
expectedResponse.Headers.ETag = new EntityTagHeaderValue("\"etg\"", true);
// act
var response = await state.ExecuteRequest();
// assert
Predicate <Tuple <string, CachingHttpClient.CachedValues> > assert = AssertResult;
state.Dependencies
.Verify(x => x.Cache.Put(Match.Create(assert)), Times.Once);
bool AssertResult(Tuple <string, CachingHttpClient.CachedValues> input)
{
// if there is an ETag, expires should be now, and not the past expiry
var settings = ((Soft)input.Item2.CacheSettings.ExpirySettings).Item;
CustomAssert.AssertDateAlmost(DateTime.UtcNow, settings.MustRevalidateAtUtc);
var etag = ((Headers.CacheSettings.Validator.ETag)settings.Validator).Item;
var weak = (Headers.CacheSettings.EntityTag.Weak)etag;
Assert.AreEqual("\"etg\"", weak.Item);
return(true);
}
}
public async Task ClientRequest_WithWeakETag_ServerReturnsAnotherETag_CachesCorrectly()
{
// arrange
var state = SetUpWeakETagScenario("\"etg 2\"");
// act
var response = await state.ExecuteRequest();
// assert
Predicate <Tuple <string, CachingHttpClient.CachedValues> > assertCachePut = AssertCachePut;
state.Dependencies
.Verify(x => x.Cache.Put(Match.Create(assertCachePut)), Times.Once);
bool AssertCachePut(Tuple <string, CachingHttpClient.CachedValues> input)
{
Assert.AreEqual("server value", response.Headers.GetValues("x-custom-header").First());
var settings = ((Soft)input.Item2.CacheSettings.ExpirySettings).Item;
CustomAssert.AssertDateAlmost(DateTime.UtcNow, settings.MustRevalidateAtUtc);
var etag = ((Headers.CacheSettings.Validator.ETag)settings.Validator).Item;
var weak = (Headers.CacheSettings.EntityTag.Weak)etag;
Assert.AreEqual("\"etg 2\"", weak.Item);
return(true);
}
}
public void GetCacheTime_WithoutValidate_ReturnsHardExpiryBasedOnMaxAge()
{
// arrange
var cacheHeaders = BuildHeaders(
immutable: true,
maxAge: TimeSpan.FromDays(1));
// act
var result = ((ExpirySettings.HardUtc)build(cacheHeaders).Value.ExpirySettings).Item;
// assert
CustomAssert.AssertDateAlmost(DateTime.UtcNow.AddDays(1), result);
}
public void GetCacheTime_WithNoETag_SetsCorectValidator()
{
// arrange
var cacheHeaders = BuildHeaders(
immutable: true,
sharedCache: true,
maxAge: TimeSpan.FromDays(1),
sMaxAge: TimeSpan.FromDays(2),
exipiresUtc: DateTime.UtcNow.AddDays(3));
// act
var result = ((ExpirySettings.Soft)build(cacheHeaders).Value.ExpirySettings).Item;
// assert
var exDate = ((Validator.ExpirationDateUtc)result.Validator).Item;
CustomAssert.AssertDateAlmost(DateTime.UtcNow.AddDays(3), exDate);
}