text: // Copyright 2013 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 "content/renderer/media/cache_util.h"
  
  #include <string>
  
  #include "base/format_macros.h"
  #include "base/strings/string_number_conversions.h"
  #include "base/strings/string_util.h"
  #include "base/strings/stringprintf.h"
  #include "testing/gtest/include/gtest/gtest.h"
  #include "third_party/WebKit/public/platform/WebString.h"
  #include "third_party/WebKit/public/platform/WebURLResponse.h"
  
  using blink::WebString;
  using blink::WebURLResponse;
  
  namespace content {
  
  // Inputs & expected output for GetReasonsForUncacheability.
  struct GRFUTestCase {
    WebURLResponse::HTTPVersion version;
    int status_code;
    const char* headers;
    uint32 expected_reasons;
  };
  
  // Create a new WebURLResponse object.
  static WebURLResponse CreateResponse(const GRFUTestCase& test) {
    WebURLResponse response;
    response.initialize();
    response.setHTTPVersion(test.version);
    response.setHTTPStatusCode(test.status_code);
    std::vector<std::string> lines;
    Tokenize(test.headers, "\n", &lines);
    for (size_t i = 0; i < lines.size(); ++i) {
      size_t colon = lines[i].find(": ");
      response.addHTTPHeaderField(
          WebString::fromUTF8(lines[i].substr(0, colon)),
          WebString::fromUTF8(lines[i].substr(colon + 2)));
    }
    return response;
  }
  
  TEST(CacheUtilTest, GetReasonsForUncacheability) {
    enum { kNoReasons = 0 };
  
    const GRFUTestCase tests[] = {
      {
        WebURLResponse::HTTP_1_1, 206, "ETag: 'fooblort'", kNoReasons
      },
      {
        WebURLResponse::HTTP_1_1, 206, "", kNoStrongValidatorOnPartialResponse
      },
      {
        WebURLResponse::HTTP_1_0, 206, "",
        kPre11PartialResponse | kNoStrongValidatorOnPartialResponse
      },
      {
        WebURLResponse::HTTP_1_1, 200, "cache-control: max-Age=42", kShortMaxAge
      },
      {
        WebURLResponse::HTTP_1_1, 200, "cache-control: max-Age=4200", kNoReasons
      },
      {
        WebURLResponse::HTTP_1_1, 200,
        "Date: Tue, 22 May 2012 23:46:08 GMT\n"
        "Expires: Tue, 22 May 2012 23:56:08 GMT", kExpiresTooSoon
      },
      {
        WebURLResponse::HTTP_1_1, 200, "cache-control: must-revalidate",
        kHasMustRevalidate
      },
      {
        WebURLResponse::HTTP_1_1, 200, "cache-control: no-cache", kNoCache
      },
      {
        WebURLResponse::HTTP_1_1, 200, "cache-control: no-store", kNoStore
      },
      {
        WebURLResponse::HTTP_1_1, 200,
        "cache-control: no-cache\ncache-control: no-store", kNoCache | kNoStore
      },
    };
    for (size_t i = 0; i < arraysize(tests); ++i) {
      SCOPED_TRACE(base::StringPrintf("case: %" PRIuS
                                      ", version: %d, code: %d, headers: %s",
                                      i, tests[i].version, tests[i].status_code,
                                      tests[i].headers));
      EXPECT_EQ(GetReasonsForUncacheability(CreateResponse(tests[i])),
                tests[i].expected_reasons);
    }
  }
  
  }  // namespace content
  