Allow cache reuse of some requests with Cache-Control headers

Source/platform/network/HTTPParsersTest.cpp

Index: Source/platform/network/HTTPParsersTest.cpp
diff --git a/Source/platform/network/HTTPParsersTest.cpp b/Source/platform/network/HTTPParsersTest.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..02dd769eb5edee4f0d265b080e42be410f9d076f
--- /dev/null
+++ b/Source/platform/network/HTTPParsersTest.cpp
@@ -0,0 +1,101 @@
+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "config.h"
+#include "HTTPParsers.h"
+
+#include "wtf/MathExtras.h"
+#include "wtf/text/AtomicString.h"
+
+#include <gtest/gtest.h>
+
+using namespace WebCore;
+using namespace std;
+
+namespace {
+
+TEST(HTTPParsersTest, ParseCacheControl)
+{
+    CacheControlHeader header;
+
+    header = parseCacheControlDirectives("no-cache", AtomicString());
+    EXPECT_TRUE(header.parsed);
+    EXPECT_TRUE(header.containsNoCache);
+    EXPECT_FALSE(header.containsNoStore);
+    EXPECT_FALSE(header.containsMustRevalidate);
+    EXPECT_TRUE(isnan(header.maxAge));
+
+    header = parseCacheControlDirectives("no-cache no-store", AtomicString());
+    EXPECT_TRUE(header.parsed);
+    EXPECT_TRUE(header.containsNoCache);
+    EXPECT_FALSE(header.containsNoStore);
+    EXPECT_FALSE(header.containsMustRevalidate);
+    EXPECT_TRUE(isnan(header.maxAge));
+
+    header = parseCacheControlDirectives("no-store must-revalidate", AtomicString());
+    EXPECT_TRUE(header.parsed);
+    EXPECT_FALSE(header.containsNoCache);
+    EXPECT_TRUE(header.containsNoStore);
+    EXPECT_FALSE(header.containsMustRevalidate);
+    EXPECT_TRUE(isnan(header.maxAge));
+
+    header = parseCacheControlDirectives("max-age=0", AtomicString());
+    EXPECT_TRUE(header.parsed);
+    EXPECT_FALSE(header.containsNoCache);
+    EXPECT_FALSE(header.containsNoStore);
+    EXPECT_FALSE(header.containsMustRevalidate);
+    EXPECT_EQ(0.0, header.maxAge);
+
+    header = parseCacheControlDirectives("max-age", AtomicString());
+    EXPECT_TRUE(header.parsed);
+    EXPECT_FALSE(header.containsNoCache);
+    EXPECT_FALSE(header.containsNoStore);
+    EXPECT_FALSE(header.containsMustRevalidate);
+    EXPECT_TRUE(isnan(header.maxAge));
+
+    header = parseCacheControlDirectives("max-age=0 no-cache", AtomicString());
+    EXPECT_TRUE(header.parsed);
+    EXPECT_FALSE(header.containsNoCache);
+    EXPECT_FALSE(header.containsNoStore);
+    EXPECT_FALSE(header.containsMustRevalidate);
+    EXPECT_EQ(0.0, header.maxAge);
+
+    header = parseCacheControlDirectives("no-cache=foo", AtomicString());
+    EXPECT_TRUE(header.parsed);
+    EXPECT_FALSE(header.containsNoCache);
+    EXPECT_FALSE(header.containsNoStore);
+    EXPECT_FALSE(header.containsMustRevalidate);
+    EXPECT_TRUE(isnan(header.maxAge));
+
+    header = parseCacheControlDirectives("nonsense", AtomicString());
+    EXPECT_TRUE(header.parsed);
+    EXPECT_FALSE(header.containsNoCache);
+    EXPECT_FALSE(header.containsNoStore);
+    EXPECT_FALSE(header.containsMustRevalidate);
+    EXPECT_TRUE(isnan(header.maxAge));
+
+    header = parseCacheControlDirectives("\rno-cache\n\t\v\0\b", AtomicString());
+    EXPECT_TRUE(header.parsed);
+    EXPECT_TRUE(header.containsNoCache);
+    EXPECT_FALSE(header.containsNoStore);
+    EXPECT_FALSE(header.containsMustRevalidate);
+    EXPECT_TRUE(isnan(header.maxAge));
+
+    header = parseCacheControlDirectives("      no-cache       ", AtomicString());
+    EXPECT_TRUE(header.parsed);
+    EXPECT_TRUE(header.containsNoCache);
+    EXPECT_FALSE(header.containsNoStore);
+    EXPECT_FALSE(header.containsMustRevalidate);
+    EXPECT_TRUE(isnan(header.maxAge));
+
+    header = parseCacheControlDirectives(AtomicString(), "no-cache");
+    EXPECT_TRUE(header.parsed);
+    EXPECT_TRUE(header.containsNoCache);
+    EXPECT_FALSE(header.containsNoStore);
+    EXPECT_FALSE(header.containsMustRevalidate);
+    EXPECT_TRUE(isnan(header.maxAge));
+}
+
+} // namespace
+