Reland: WebFonts cache-aware timeout adaptation

third_party/WebKit/Source/core/loader/resource/FontResourceTest.cpp

Index: third_party/WebKit/Source/core/loader/resource/FontResourceTest.cpp
diff --git a/third_party/WebKit/Source/core/loader/resource/FontResourceTest.cpp b/third_party/WebKit/Source/core/loader/resource/FontResourceTest.cpp
index 6604abe08287fd704c2f389e6ec15eca3477e2d2..2eaa28efcc87883654c8e1253a83ffcfba447c25 100644
--- a/third_party/WebKit/Source/core/loader/resource/FontResourceTest.cpp
+++ b/third_party/WebKit/Source/core/loader/resource/FontResourceTest.cpp
@@ -8,11 +8,13 @@
 #include "core/fetch/FetchRequest.h"
 #include "core/fetch/MemoryCache.h"
 #include "core/fetch/MockFetchContext.h"
-#include "core/fetch/MockResourceClients.h"
 #include "core/fetch/ResourceFetcher.h"
 #include "core/fetch/ResourceLoader.h"
+#include "core/loader/resource/MockFontResourceClient.h"
 #include "platform/exported/WrappedResourceResponse.h"
+#include "platform/network/ResourceError.h"
 #include "platform/network/ResourceRequest.h"
+#include "platform/network/ResourceResponse.h"
 #include "platform/weborigin/KURL.h"
 #include "public/platform/Platform.h"
 #include "public/platform/WebURLLoaderMockFactory.h"
@@ -82,4 +84,61 @@ TEST_F(FontResourceTest,
   memoryCache()->remove(resource1);
 }
 
+// Tests if cache-aware font loading works correctly.
+TEST_F(FontResourceTest, CacheAwareFontLoading) {
+  KURL url(ParsedURLString, "http://127.0.0.1:8000/font.woff");
+  ResourceResponse response;
+  response.setURL(url);
+  response.setHTTPStatusCode(200);
+  Platform::current()->getURLLoaderMockFactory()->registerURL(
+      url, WrappedResourceResponse(response), "");
+
+  ResourceFetcher* fetcher = ResourceFetcher::create(
+      MockFetchContext::create(MockFetchContext::kShouldLoadNewResource));
+
+  FetchRequest fetchRequest = FetchRequest(url, FetchInitiatorInfo());
+  fetchRequest.setCacheAwareLoadingEnabled(IsCacheAwareLoadingEnabled);
+  FontResource* resource = FontResource::fetch(fetchRequest, fetcher);
+  ASSERT_TRUE(resource);
+
+  Persistent<MockFontResourceClient> client =
+      new MockFontResourceClient(resource);
+  fetcher->startLoad(resource);
+  EXPECT_TRUE(resource->loader()->isCacheAwareLoadingActivated());
+  resource->m_loadLimitState = FontResource::UnderLimit;
+
+  // FontResource callbacks should be blocked during cache-aware loading.
+  resource->fontLoadShortLimitCallback(nullptr);
+  EXPECT_FALSE(client->fontLoadShortLimitExceededCalled());
+
+  // Fail first request as disk cache miss.
+  resource->loader()->didFail(ResourceError::cacheMissError(url));
+
+  // Once cache miss error returns, previously blocked callbacks should be
+  // called immediately.
+  EXPECT_FALSE(resource->loader()->isCacheAwareLoadingActivated());
+  EXPECT_TRUE(client->fontLoadShortLimitExceededCalled());
+  EXPECT_FALSE(client->fontLoadLongLimitExceededCalled());
+
+  // Add client now, fontLoadShortLimitExceeded() should be called.
+  Persistent<MockFontResourceClient> client2 =
+      new MockFontResourceClient(resource);
+  EXPECT_TRUE(client2->fontLoadShortLimitExceededCalled());
+  EXPECT_FALSE(client2->fontLoadLongLimitExceededCalled());
+
+  // FontResource callbacks are not blocked now.
+  resource->fontLoadLongLimitCallback(nullptr);
+  EXPECT_TRUE(client->fontLoadLongLimitExceededCalled());
+
+  // Add client now, both callbacks should be called.
+  Persistent<MockFontResourceClient> client3 =
+      new MockFontResourceClient(resource);
+  EXPECT_TRUE(client3->fontLoadShortLimitExceededCalled());
+  EXPECT_TRUE(client3->fontLoadLongLimitExceededCalled());
+
+  Platform::current()->getURLLoaderMockFactory()->serveAsynchronousRequests();
+  Platform::current()->getURLLoaderMockFactory()->unregisterURL(url);
+  memoryCache()->remove(resource);
+}
+
 }  // namespace blink