public void ContentIsNotModified_IfModifiedSince_LastModifiedOverridesDateHeader()
{
var utcNow = DateTimeOffset.UtcNow;
var sink = new TestSink();
var context = TestUtils.CreateTestContext(sink);
context.CachedResponseHeaders = new HeaderDictionary();
context.HttpContext.Request.Headers[HeaderNames.IfModifiedSince] = HeaderUtilities.FormatDate(utcNow);
// Verify modifications in the past succeeds
context.CachedResponseHeaders[HeaderNames.Date] = HeaderUtilities.FormatDate(utcNow + TimeSpan.FromSeconds(10));
context.CachedResponseHeaders[HeaderNames.LastModified] = HeaderUtilities.FormatDate(utcNow - TimeSpan.FromSeconds(10));
Assert.True(ResponseCachingMiddleware.ContentIsNotModified(context));
Assert.Single(sink.Writes);
// Verify modifications at present
context.CachedResponseHeaders[HeaderNames.Date] = HeaderUtilities.FormatDate(utcNow + TimeSpan.FromSeconds(10));
context.CachedResponseHeaders[HeaderNames.LastModified] = HeaderUtilities.FormatDate(utcNow);
Assert.True(ResponseCachingMiddleware.ContentIsNotModified(context));
Assert.Equal(2, sink.Writes.Count);
// Verify modifications in the future fails
context.CachedResponseHeaders[HeaderNames.Date] = HeaderUtilities.FormatDate(utcNow - TimeSpan.FromSeconds(10));
context.CachedResponseHeaders[HeaderNames.LastModified] = HeaderUtilities.FormatDate(utcNow + TimeSpan.FromSeconds(10));
Assert.False(ResponseCachingMiddleware.ContentIsNotModified(context));
// Verify logging
TestUtils.AssertLoggedMessages(
sink.Writes,
LoggedMessage.NotModifiedIfModifiedSinceSatisfied,
LoggedMessage.NotModifiedIfModifiedSinceSatisfied);
}
public void ContentIsNotModified_NotConditionalRequest_False()
{
var sink = new TestSink();
var context = TestUtils.CreateTestContext(sink);
context.CachedResponseHeaders = new HeaderDictionary();
Assert.False(ResponseCachingMiddleware.ContentIsNotModified(context));
Assert.Empty(sink.Writes);
}
public void ContentIsNotModified_IfNoneMatch_AnyWithoutETagInResponse_False()
{
var sink = new TestSink();
var context = TestUtils.CreateTestContext(sink);
context.CachedResponseHeaders = new HeaderDictionary();
context.HttpContext.Request.Headers[HeaderNames.IfNoneMatch] = "\"E1\"";
Assert.False(ResponseCachingMiddleware.ContentIsNotModified(context));
Assert.Empty(sink.Writes);
}
public void ContentIsNotModified_IfNoneMatch_MatchesAtLeastOneValue_True()
{
var sink = new TestSink();
var context = TestUtils.CreateTestContext(sink);
context.CachedResponseHeaders = new HeaderDictionary();
context.CachedResponseHeaders[HeaderNames.ETag] = "\"E2\"";
context.HttpContext.Request.Headers[HeaderNames.IfNoneMatch] = new string[] { "\"E0\", \"E1\"", "\"E1\", \"E2\"" };
Assert.True(ResponseCachingMiddleware.ContentIsNotModified(context));
TestUtils.AssertLoggedMessages(
sink.Writes,
LoggedMessage.NotModifiedIfNoneMatchMatched);
}
public void ContentIsNotModified_IfNoneMatch_ExplicitWithMatch_True(EntityTagHeaderValue responseETag, EntityTagHeaderValue requestETag)
{
var sink = new TestSink();
var context = TestUtils.CreateTestContext(sink);
context.CachedResponseHeaders = new HeaderDictionary();
context.CachedResponseHeaders[HeaderNames.ETag] = responseETag.ToString();
context.HttpContext.Request.Headers[HeaderNames.IfNoneMatch] = requestETag.ToString();
Assert.True(ResponseCachingMiddleware.ContentIsNotModified(context));
TestUtils.AssertLoggedMessages(
sink.Writes,
LoggedMessage.NotModifiedIfNoneMatchMatched);
}
public void ContentIsNotModified_IfNoneMatch_Overrides_IfModifiedSince_ToFalse()
{
var utcNow = DateTimeOffset.UtcNow;
var sink = new TestSink();
var context = TestUtils.CreateTestContext(sink);
context.CachedResponseHeaders = new HeaderDictionary();
// This would pass the IfModifiedSince checks
context.HttpContext.Request.Headers[HeaderNames.IfModifiedSince] = HeaderUtilities.FormatDate(utcNow);
context.CachedResponseHeaders[HeaderNames.LastModified] = HeaderUtilities.FormatDate(utcNow - TimeSpan.FromSeconds(10));
context.HttpContext.Request.Headers[HeaderNames.IfNoneMatch] = "\"E1\"";
Assert.False(ResponseCachingMiddleware.ContentIsNotModified(context));
Assert.Empty(sink.Writes);
}
public void ContentIsNotModified_IfNoneMatch_Overrides_IfModifiedSince_ToTrue()
{
var utcNow = DateTimeOffset.UtcNow;
var sink = new TestSink();
var context = TestUtils.CreateTestContext(sink);
context.CachedResponseHeaders = new HeaderDictionary();
// This would fail the IfModifiedSince checks
context.HttpContext.Request.Headers[HeaderNames.IfModifiedSince] = HeaderUtilities.FormatDate(utcNow);
context.CachedResponseHeaders[HeaderNames.LastModified] = HeaderUtilities.FormatDate(utcNow + TimeSpan.FromSeconds(10));
context.HttpContext.Request.Headers[HeaderNames.IfNoneMatch] = EntityTagHeaderValue.Any.ToString();
Assert.True(ResponseCachingMiddleware.ContentIsNotModified(context));
TestUtils.AssertLoggedMessages(
sink.Writes,
LoggedMessage.NotModifiedIfNoneMatchStar);
}