Consolidate test support code.

Removes duplication between pdfium_test and pdfium_embeddertest

R=thestig@chromium.org

Review URL: https://codereview.chromium.org/1416713002 .

8 files changed, 271 insertions, 232 deletions

diff --git a/BUILD.gn b/BUILD.gn
index 8ae5a085f0..ea53caed64 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -133,6 +133,39 @@ static_library("pdfium") {
   }
 }
 
+source_set("test_support") {
+  testonly = true
+  sources = [
+    "testing/fx_string_testhelpers.cpp",
+    "testing/fx_string_testhelpers.h",
+    "testing/test_support.cpp",
+    "testing/test_support.h",
+  ]
+  deps = [
+    "//testing/gmock",
+    "//testing/gtest",
+    ":pdfium",
+  ]
+  include_dirs = [
+    "."
+  ]
+  if (pdf_enable_v8) {
+    deps += [
+      "//v8",
+      "//v8:v8_libplatform",
+    ]
+    include_dirs += [
+      "//v8",
+      "//v8/include",
+    ]
+  }
+  configs -= [ "//build/config/compiler:chromium_code" ]
+  configs += [
+    ":pdfium_config",
+    "//build/config/compiler:no_chromium_code",
+  ]
+}
+
 # Targets below this are only visible within this file (and to the
 # top-level gn_visibility target used to help gn_all build everything).
 visibility = [
@@ -731,14 +764,13 @@ test("pdfium_unittests") {
     "core/src/fxcrt/fx_basic_wstring_unittest.cpp",
     "core/src/fxcrt/fx_bidi_unittest.cpp",
     "core/src/fxcrt/fx_system_unittest.cpp",
-    "testing/fx_string_testhelpers.cpp",
-    "testing/fx_string_testhelpers.h",
     "third_party/base/nonstd_unique_ptr_unittest.cpp",
   ]
   deps = [
     "//testing/gtest",
     "//testing/gtest:gtest_main",
     ":pdfium",
+    ":test_support",
   ]
   include_dirs = [ "." ]
   configs -= [ "//build/config/compiler:chromium_code" ]
@@ -763,13 +795,12 @@ test("pdfium_embeddertests") {
     "testing/embedder_test.h",
     "testing/embedder_test_mock_delegate.h",
     "testing/embedder_test_timer_handling_delegate.h",
-    "testing/fx_string_testhelpers.cpp",
-    "testing/fx_string_testhelpers.h",
   ]
   deps = [
     "//testing/gmock",
     "//testing/gtest",
     ":pdfium",
+    ":test_support",
   ]
   include_dirs = [
     "."
diff --git a/pdfium.gyp b/pdfium.gyp
index 6ea3f4ab07..2c1117277d 100644
--- a/pdfium.gyp
+++ b/pdfium.gyp
@@ -721,6 +721,7 @@
         '<(DEPTH)/testing/gtest.gyp:gtest_main',
         '<(DEPTH)/testing/gtest.gyp:gtest',
         'pdfium',
+        'test_support',
       ],
       'include_dirs': [
         '<(DEPTH)'
@@ -744,6 +745,7 @@
         '<(DEPTH)/testing/gmock.gyp:gmock',
         '<(DEPTH)/testing/gtest.gyp:gtest',
         'pdfium',
+        'test_support',
       ],
       'include_dirs': [
         '<(DEPTH)',
@@ -762,8 +764,6 @@
         'testing/embedder_test.h',
         'testing/embedder_test_mock_delegate.h',
         'testing/embedder_test_timer_handling_delegate.h',
-        'testing/fx_string_testhelpers.cpp',
-        'testing/fx_string_testhelpers.h',
       ],
       'conditions': [
         ['pdf_enable_v8==1', {
@@ -781,5 +781,34 @@
         }],
       ],
     },
+    {
+      'target_name': 'test_support',
+      'type': 'static_library',
+      'dependencies': [
+        '<(DEPTH)/testing/gmock.gyp:gmock',
+        '<(DEPTH)/testing/gtest.gyp:gtest',
+      ],
+      'include_dirs': [
+        '<(DEPTH)',
+      ],
+      'sources': [
+        'testing/fx_string_testhelpers.cpp',
+        'testing/fx_string_testhelpers.h',
+        'testing/test_support.cpp',
+        'testing/test_support.h',
+      ],
+      'conditions': [
+        ['pdf_enable_v8==1', {
+          'include_dirs': [
+            '<(DEPTH)/v8',
+            '<(DEPTH)/v8/include',
+          ],
+          'dependencies': [
+            '<(DEPTH)/v8/tools/gyp/v8.gyp:v8',
+            '<(DEPTH)/v8/tools/gyp/v8.gyp:v8_libplatform',
+          ],
+        }],
+      ],
+    },
   ],
 }
diff --git a/samples/BUILD.gn b/samples/BUILD.gn
index 5749de90f1..f3f6bc1a10 100644
--- a/samples/BUILD.gn
+++ b/samples/BUILD.gn
@@ -5,6 +5,7 @@
 import("../pdfium.gni")
 
 group("samples") {
+  testonly = true
   deps = [
     ":pdfium_test",
     ":pdfium_diff",
@@ -25,12 +26,14 @@ config("pdfium_samples_config") {
 }
 
 executable("pdfium_test") {
+  testonly = true
   sources = [
     "image_diff_png.cc",
     "pdfium_test.cc",
   ]
   deps = [
-    "//third_party/pdfium",
+    "//third_party/pdfium:pdfium",
+    "//third_party/pdfium:test_support",
     # Regardless of whether the library ships against system freetype,
     # always link this binary against the bundled one for consistency
     # of results across platforms.
@@ -50,6 +53,7 @@ executable("pdfium_test") {
 }
 
 executable("pdfium_diff") {
+  testonly = true
   sources = [
     "image_diff.cc",
     "image_diff_png.cc",
@@ -67,6 +71,7 @@ executable("pdfium_diff") {
 }
 
 static_library("fx_lpng") {
+  testonly = true
   sources = [
     "fx_lpng/include/fx_png.h",
     "fx_lpng/src/fx_png.c",
diff --git a/samples/pdfium_test.cc b/samples/pdfium_test.cc
index f15e19c75b..10504251c7 100644
--- a/samples/pdfium_test.cc
+++ b/samples/pdfium_test.cc
@@ -18,7 +18,9 @@
 #include "../public/fpdf_formfill.h"
 #include "../public/fpdf_text.h"
 #include "../public/fpdfview.h"
+#include "../testing/test_support.h"
 #include "image_diff_png.h"
+
 #ifdef PDF_ENABLE_V8
 #include "v8/include/libplatform/libplatform.h"
 #include "v8/include/v8.h"
@@ -26,9 +28,6 @@
 
 #ifdef _WIN32
 #define snprintf _snprintf
-#define PATH_SEPARATOR '\\'
-#else
-#define PATH_SEPARATOR '/'
 #endif
 
 enum OutputFormat {
@@ -51,76 +50,6 @@ struct Options {
   std::string font_directory;
 };
 
-// Reads the entire contents of a file into a newly malloc'd buffer.
-static char* GetFileContents(const char* filename, size_t* retlen) {
-  FILE* file = fopen(filename, "rb");
-  if (!file) {
-    fprintf(stderr, "Failed to open: %s\n", filename);
-    return nullptr;
-  }
-  (void)fseek(file, 0, SEEK_END);
-  size_t file_length = ftell(file);
-  if (!file_length) {
-    (void)fclose(file);
-    return nullptr;
-  }
-  (void)fseek(file, 0, SEEK_SET);
-  char* buffer = static_cast<char*>(malloc(file_length));
-  if (!buffer) {
-    (void)fclose(file);
-    return nullptr;
-  }
-  size_t bytes_read = fread(buffer, 1, file_length, file);
-  (void)fclose(file);
-  if (bytes_read != file_length) {
-    fprintf(stderr, "Failed to read: %s\n", filename);
-    free(buffer);
-    return nullptr;
-  }
-  *retlen = bytes_read;
-  return buffer;
-}
-
-#ifdef PDF_ENABLE_V8
-#ifdef V8_USE_EXTERNAL_STARTUP_DATA
-// Returns the full path for an external V8 data file based on either
-// the currect exectuable path or an explicit override.
-static std::string GetFullPathForSnapshotFile(const Options& options,
-                                              const std::string& filename) {
-  std::string result;
-  if (!options.bin_directory.empty()) {
-    result = options.bin_directory;
-    if (*options.bin_directory.rbegin() != PATH_SEPARATOR) {
-      result += PATH_SEPARATOR;
-    }
-  } else if (!options.exe_path.empty()) {
-    size_t last_separator = options.exe_path.rfind(PATH_SEPARATOR);
-    if (last_separator != std::string::npos)  {
-      result = options.exe_path.substr(0, last_separator + 1);
-    }
-  }
-  result += filename;
-  return result;
-}
-
-// Reads an extenal V8 data file from the |options|-indicated location,
-// returing true on success and false on error.
-static bool GetExternalData(const Options& options,
-                            const std::string& bin_filename,
-                            v8::StartupData* result_data) {
-  std::string full_path = GetFullPathForSnapshotFile(options, bin_filename);
-  size_t data_length = 0;
-  char* data_buffer = GetFileContents(full_path.c_str(), &data_length);
-  if (!data_buffer) {
-    return false;
-  }
-  result_data->data = const_cast<const char*>(data_buffer);
-  result_data->raw_size = static_cast<int>(data_length);
-  return true;
-}
-#endif  // V8_USE_EXTERNAL_STARTUP_DATA
-#endif  // PDF_ENABLE_V8
-
 static bool CheckDimensions(int stride, int width, int height) {
   if (stride < 0 || width < 0 || height < 0)
     return false;
@@ -408,28 +337,6 @@ bool ParseCommandLine(const std::vector<std::string>& args,
   return true;
 }
 
-class TestLoader {
- public:
-  TestLoader(const char* pBuf, size_t len);
-
-  const char* m_pBuf;
-  size_t m_Len;
-};
-
-TestLoader::TestLoader(const char* pBuf, size_t len)
-    : m_pBuf(pBuf), m_Len(len) {
-}
-
-int GetBlock(void* param,
-             unsigned long pos,
-             unsigned char* pBuf,
-             unsigned long size) {
-  TestLoader* pLoader = static_cast<TestLoader*>(param);
-  if (pos + size < pos || pos + size > pLoader->m_Len) return 0;
-  memcpy(pBuf, pLoader->m_pBuf + pos, size);
-  return 1;
-}
-
 FPDF_BOOL Is_Data_Avail(FX_FILEAVAIL* pThis, size_t offset, size_t size) {
   return true;
 }
@@ -453,11 +360,10 @@ void RenderPdf(const std::string& name, const char* pBuf, size_t len,
   form_callbacks.m_pJsPlatform = &platform_callbacks;
 
   TestLoader loader(pBuf, len);
-
   FPDF_FILEACCESS file_access;
   memset(&file_access, '\0', sizeof(file_access));
   file_access.m_FileLen = static_cast<unsigned long>(len);
-  file_access.m_GetBlock = GetBlock;
+  file_access.m_GetBlock = TestLoader::GetBlock;
   file_access.m_Param = &loader;
 
   FX_FILEAVAIL file_avail;
@@ -602,25 +508,14 @@ int main(int argc, const char* argv[]) {
   }
 
 #ifdef PDF_ENABLE_V8
-  v8::V8::InitializeICU();
-  v8::Platform* platform = v8::platform::CreateDefaultPlatform();
-  v8::V8::InitializePlatform(platform);
-  v8::V8::Initialize();
-
-  // By enabling predictable mode, V8 won't post any background tasks.
-  static const char predictable_flag[] = "--predictable";
-  v8::V8::SetFlagsFromString(predictable_flag,
-                             static_cast<int>(strlen(predictable_flag)));
-
+  v8::Platform* platform;
 #ifdef V8_USE_EXTERNAL_STARTUP_DATA
   v8::StartupData natives;
   v8::StartupData snapshot;
-  if (!GetExternalData(options, "natives_blob.bin", &natives) ||
-      !GetExternalData(options, "snapshot_blob.bin", &snapshot)) {
-    return 1;
-  }
-  v8::V8::SetNativesDataBlob(&natives);
-  v8::V8::SetSnapshotDataBlob(&snapshot);
+  InitializeV8ForPDFium(options.exe_path, options.bin_directory, &natives,
+                        &snapshot, &platform);
+#else   // V8_USE_EXTERNAL_STARTUP_DATA
+  InitializeV8ForPDFium(&platform);
 #endif  // V8_USE_EXTERNAL_STARTUP_DATA
 #endif  // PDF_ENABLE_V8
 
diff --git a/samples/samples.gyp b/samples/samples.gyp
index 496a274da7..35b62b7fcf 100644
--- a/samples/samples.gyp
+++ b/samples/samples.gyp
@@ -34,6 +34,7 @@
       'dependencies': [
         'fx_lpng',
         '../pdfium.gyp:pdfium',
+        '../pdfium.gyp:test_support',
         # Regardless of whether the library ships against system freetype,
         # always link this binary against the bundled one for consistency
         # of results across platforms.
diff --git a/testing/embedder_test.cpp b/testing/embedder_test.cpp
index 9d99084050..723bad7f8a 100644
--- a/testing/embedder_test.cpp
+++ b/testing/embedder_test.cpp
@@ -5,9 +5,6 @@
 #include "embedder_test.h"
 
 #include <limits.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
 
 #include <list>
 #include <string>
@@ -16,6 +13,7 @@
 
 #include "../public/fpdf_text.h"
 #include "../public/fpdfview.h"
+#include "test_support.h"
 #include "testing/gmock/include/gmock/gmock.h"
 
 #ifdef PDF_ENABLE_V8
@@ -23,103 +21,10 @@
 #include "v8/include/v8.h"
 #endif  // PDF_ENABLE_V8
 
-#ifdef _WIN32
-#define snprintf _snprintf
-#define PATH_SEPARATOR '\\'
-#else
-#define PATH_SEPARATOR '/'
-#endif
-
 namespace {
-
 const char* g_exe_path_ = nullptr;
-
-// Reads the entire contents of a file into a newly malloc'd buffer.
-static char* GetFileContents(const char* filename, size_t* retlen) {
-  FILE* file = fopen(filename, "rb");
-  if (!file) {
-    fprintf(stderr, "Failed to open: %s\n", filename);
-    return nullptr;
-  }
-  (void)fseek(file, 0, SEEK_END);
-  size_t file_length = ftell(file);
-  if (!file_length) {
-    return nullptr;
-  }
-  (void)fseek(file, 0, SEEK_SET);
-  char* buffer = (char*)malloc(file_length);
-  if (!buffer) {
-    return nullptr;
-  }
-  size_t bytes_read = fread(buffer, 1, file_length, file);
-  (void)fclose(file);
-  if (bytes_read != file_length) {
-    fprintf(stderr, "Failed to read: %s\n", filename);
-    free(buffer);
-    return nullptr;
-  }
-  *retlen = bytes_read;
-  return buffer;
-}
-
-#ifdef PDF_ENABLE_V8
-#ifdef V8_USE_EXTERNAL_STARTUP_DATA
-// Returns the full path for an external V8 data file based on either
-// the currect exectuable path or an explicit override.
-static std::string GetFullPathForSnapshotFile(const std::string& exe_path,
-                                              const std::string& filename) {
-  std::string result;
-  if (!exe_path.empty()) {
-    size_t last_separator = exe_path.rfind(PATH_SEPARATOR);
-    if (last_separator != std::string::npos) {
-      result = exe_path.substr(0, last_separator + 1);
-    }
-  }
-  result += filename;
-  return result;
-}
-
-// Reads an extenal V8 data file from the |options|-indicated location,
-// returing true on success and false on error.
-static bool GetExternalData(const std::string& exe_path,
-                            const std::string& filename,
-                            v8::StartupData* result_data) {
-  std::string full_path = GetFullPathForSnapshotFile(exe_path, filename);
-  size_t data_length = 0;
-  char* data_buffer = GetFileContents(full_path.c_str(), &data_length);
-  if (!data_buffer) {
-    return false;
-  }
-  result_data->data = const_cast<const char*>(data_buffer);
-  result_data->raw_size = data_length;
-  return true;
-}
-#endif  // V8_USE_EXTERNAL_STARTUP_DATA
-#endif  // PDF_ENABLE_V8
 }  // namespace
 
-class TestLoader {
- public:
-  TestLoader(const char* pBuf, size_t len);
-
-  const char* m_pBuf;
-  size_t m_Len;
-};
-
-TestLoader::TestLoader(const char* pBuf, size_t len)
-    : m_pBuf(pBuf), m_Len(len) {}
-
-int Get_Block(void* param,
-              unsigned long pos,
-              unsigned char* pBuf,
-              unsigned long size) {
-  TestLoader* pLoader = (TestLoader*)param;
-  if (pos + size < pos || pos + size > pLoader->m_Len)
-    return 0;
-  memcpy(pBuf, pLoader->m_pBuf + pos, size);
-  return 1;
-}
-
 FPDF_BOOL Is_Data_Avail(FX_FILEAVAIL* pThis, size_t offset, size_t size) {
   return true;
 }
@@ -146,22 +51,11 @@ EmbedderTest::~EmbedderTest() {
 
 void EmbedderTest::SetUp() {
 #ifdef PDF_ENABLE_V8
-  v8::V8::InitializeICU();
-
-  platform_ = v8::platform::CreateDefaultPlatform();
-  v8::V8::InitializePlatform(platform_);
-  v8::V8::Initialize();
-
-  // By enabling predictable mode, V8 won't post any background tasks.
-  const char predictable_flag[] = "--predictable";
-  v8::V8::SetFlagsFromString(predictable_flag,
-                             static_cast<int>(strlen(predictable_flag)));
-
 #ifdef V8_USE_EXTERNAL_STARTUP_DATA
-  ASSERT_TRUE(GetExternalData(g_exe_path_, "natives_blob.bin", &natives_));
-  ASSERT_TRUE(GetExternalData(g_exe_path_, "snapshot_blob.bin", &snapshot_));
-  v8::V8::SetNativesDataBlob(&natives_);
-  v8::V8::SetSnapshotDataBlob(&snapshot_);
+  InitializeV8ForPDFium(g_exe_path_, std::string(), &natives_, &snapshot_,
+                        &platform_);
+#else
+  InitializeV8ForPDFium(&platform_);
 #endif  // V8_USE_EXTERNAL_STARTUP_DATA
 #endif  // FPDF_ENABLE_V8
 
@@ -205,7 +99,7 @@ bool EmbedderTest::OpenDocument(const std::string& filename) {
 
   loader_ = new TestLoader(file_contents_, file_length_);
   file_access_.m_FileLen = static_cast<unsigned long>(file_length_);
-  file_access_.m_GetBlock = Get_Block;
+  file_access_.m_GetBlock = TestLoader::GetBlock;
   file_access_.m_Param = loader_;
 
   file_avail_.version = 1;
diff --git a/testing/test_support.cpp b/testing/test_support.cpp
new file mode 100644
index 0000000000..611ba5d580
--- /dev/null
+++ b/testing/test_support.cpp
@@ -0,0 +1,140 @@
+// Copyright 2015 PDFium 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 "test_support.h"
+
+#include <stdio.h>
+#include <string.h>
+
+#ifdef _WIN32
+#define PATH_SEPARATOR '\\'
+#else
+#define PATH_SEPARATOR '/'
+#endif
+
+namespace {
+
+#ifdef PDF_ENABLE_V8
+#ifdef V8_USE_EXTERNAL_STARTUP_DATA
+// Returns the full path for an external V8 data file based on either
+// the currect exectuable path or an explicit override.
+std::string GetFullPathForSnapshotFile(const std::string& exe_path,
+                                       const std::string& bin_dir,
+                                       const std::string& filename) {
+  std::string result;
+  if (!bin_dir.empty()) {
+    result = bin_dir;
+    if (*bin_dir.rbegin() != PATH_SEPARATOR) {
+      result += PATH_SEPARATOR;
+    }
+  } else if (!exe_path.empty()) {
+    size_t last_separator = exe_path.rfind(PATH_SEPARATOR);
+    if (last_separator != std::string::npos) {
+      result = exe_path.substr(0, last_separator + 1);
+    }
+  }
+  result += filename;
+  return result;
+}
+
+bool GetExternalData(const std::string& exe_path,
+                     const std::string& bin_dir,
+                     const std::string& filename,
+                     v8::StartupData* result_data) {
+  std::string full_path =
+      GetFullPathForSnapshotFile(exe_path, bin_dir, filename);
+  size_t data_length = 0;
+  char* data_buffer = GetFileContents(full_path.c_str(), &data_length);
+  if (!data_buffer) {
+    return false;
+  }
+  result_data->data = const_cast<const char*>(data_buffer);
+  result_data->raw_size = data_length;
+  return true;
+}
+#endif  // V8_USE_EXTERNAL_STARTUP_DATA
+
+void InitializeV8Common(v8::Platform** platform) {
+  v8::V8::InitializeICU();
+
+  *platform = v8::platform::CreateDefaultPlatform();
+  v8::V8::InitializePlatform(*platform);
+  v8::V8::Initialize();
+
+  // By enabling predictable mode, V8 won't post any background tasks.
+  const char predictable_flag[] = "--predictable";
+  v8::V8::SetFlagsFromString(predictable_flag,
+                             static_cast<int>(strlen(predictable_flag)));
+}
+#endif  // PDF_ENABLE_V8
+
+}  // namespace
+
+char* GetFileContents(const char* filename, size_t* retlen) {
+  FILE* file = fopen(filename, "rb");
+  if (!file) {
+    fprintf(stderr, "Failed to open: %s\n", filename);
+    return nullptr;
+  }
+  (void)fseek(file, 0, SEEK_END);
+  size_t file_length = ftell(file);
+  if (!file_length) {
+    return nullptr;
+  }
+  (void)fseek(file, 0, SEEK_SET);
+  char* buffer = (char*)malloc(file_length);
+  if (!buffer) {
+    return nullptr;
+  }
+  size_t bytes_read = fread(buffer, 1, file_length, file);
+  (void)fclose(file);
+  if (bytes_read != file_length) {
+    fprintf(stderr, "Failed to read: %s\n", filename);
+    free(buffer);
+    return nullptr;
+  }
+  *retlen = bytes_read;
+  return buffer;
+}
+
+#ifdef PDF_ENABLE_V8
+#ifdef V8_USE_EXTERNAL_STARTUP_DATA
+bool InitializeV8ForPDFium(const std::string& exe_path,
+                           const std::string& bin_dir,
+                           v8::StartupData* natives_blob,
+                           v8::StartupData* snapshot_blob,
+                           v8::Platform** platform) {
+  InitializeV8Common(platform);
+  if (!GetExternalData(exe_path, bin_dir, "natives_blob.bin", natives_blob))
+    return false;
+  if (!GetExternalData(exe_path, bin_dir, "snapshot_blob.bin", snapshot_blob))
+    return false;
+  v8::V8::SetNativesDataBlob(natives_blob);
+  v8::V8::SetSnapshotDataBlob(snapshot_blob);
+  return true;
+}
+#else   // V8_USE_EXTERNAL_STARTUP_DATA
+bool InitializeV8ForPDFium(v8::Platform** platform) {
+  InitializeV8Common(platform);
+  return true;
+}
+#endif  // V8_USE_EXTERNAL_STARTUP_DATA
+#endif  // PDF_ENABLE_V8
+
+TestLoader::TestLoader(const char* pBuf, size_t len)
+    : m_pBuf(pBuf), m_Len(len) {
+}
+
+// static
+int TestLoader::GetBlock(void* param,
+                         unsigned long pos,
+                         unsigned char* pBuf,
+                         unsigned long size) {
+  TestLoader* pLoader = static_cast<TestLoader*>(param);
+  if (pos + size < pos || pos + size > pLoader->m_Len)
+    return 0;
+
+  memcpy(pBuf, pLoader->m_pBuf + pos, size);
+  return 1;
+}
diff --git a/testing/test_support.h b/testing/test_support.h
new file mode 100644
index 0000000000..1018421ba7
--- /dev/null
+++ b/testing/test_support.h
@@ -0,0 +1,44 @@
+// Copyright 2015 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef TESTING_EMBEDDER_TEST_SUPPORT_H_
+#define TESTING_EMBEDDER_TEST_SUPPORT_H_
+
+#include <stdlib.h>
+#include <string>
+
+#ifdef PDF_ENABLE_V8
+#include "v8/include/libplatform/libplatform.h"
+#include "v8/include/v8.h"
+#endif
+
+// Reads the entire contents of a file into a newly malloc'd buffer.
+char* GetFileContents(const char* filename, size_t* retlen);
+
+#ifdef PDF_ENABLE_V8
+#ifdef V8_USE_EXTERNAL_STARTUP_DATA
+bool InitializeV8ForPDFium(const std::string& exe_path,
+                           const std::string& bin_dir,
+                           v8::StartupData* natives_blob,
+                           v8::StartupData* snapshot_blob,
+                           v8::Platform** platform);
+#else   // V8_USE_EXTERNAL_STARTUP_DATA
+bool InitializeV8ForPDFium(v8::Platform** platform);
+#endif  // V8_USE_EXTERNAL_STARTUP_DATA
+#endif  // PDF_ENABLE_V8
+
+class TestLoader {
+ public:
+  TestLoader(const char* pBuf, size_t len);
+  static int GetBlock(void* param,
+                      unsigned long pos,
+                      unsigned char* pBuf,
+                      unsigned long size);
+
+ private:
+  const char* const m_pBuf;
+  const size_t m_Len;
+};
+
+#endif  // TESTING_EMBEDDER_TEST_SUPPORT_H_