Add unittest for GetNumberRequiredContinuationFrames.

net/spdy/spdy_framer_test.cc

 // Copyright (c) 2012 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 <algorithm>
 #include <iostream>
 #include <limits>
 
 #include "base/compiler_specific.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 3251 matching lines @@
     SpdyPushPromiseIR push_promise(42, 57);
     push_promise.set_padding_len(177);
     push_promise.SetHeader("bar", "foo");
     push_promise.SetHeader("foo", "bar");
     scoped_ptr<SpdySerializedFrame> frame(
         framer.SerializePushPromise(push_promise));
     CompareFrame(kDescription, *frame, kFrameData, arraysize(kFrameData));
   }
 }
 
+TEST_P(SpdyFramerTest, GetNumberRequiredContinuationFrames) {
+  if (spdy_version_ <= SPDY3) {
+    return;
+  }
+
+  SpdyFramer framer(spdy_version_);
+  // Test case from https://crbug.com/464748.
+  EXPECT_EQ(1u, framer.GetNumberRequiredContinuationFrames(2039));
+  EXPECT_EQ(2u, framer.GetNumberRequiredContinuationFrames(2040));
+}
+
 TEST_P(SpdyFramerTest, CreateContinuationUncompressed) {
   if (spdy_version_ <= SPDY3) {
     return;
   }
 
   SpdyFramer framer(spdy_version_);
   framer.set_enable_compression(false);
   const char kDescription[] = "CONTINUATION frame";
 
   const unsigned char kFrameData[] = {
@@ skipping 2649 matching lines @@
   TestSpdyVisitor visitor(spdy_version_);
   visitor.SimulateInFramer(kFrameData, sizeof(kFrameData));
 
   EXPECT_EQ(SpdyFramer::SPDY_ERROR, visitor.framer_.state());
   EXPECT_EQ(SpdyFramer::SPDY_INVALID_CONTROL_FRAME,
             visitor.framer_.error_code())
       << SpdyFramer::ErrorCodeToString(visitor.framer_.error_code());
 }
 
 }  // namespace net