Add FPDFSaveEmbedderTest.SaveLinearizedDocchromium/3267chromium/3266

Bug: pdfium:614
Change-Id: I3c6cd16dfe0ac5db66cc9e996d3f4e74a5d9d716
Reviewed-on: https://pdfium-review.googlesource.com/18251
Commit-Queue: Henrique Nakashima <hnakashima@chromium.org>
Reviewed-by: Lei Zhang <thestig@chromium.org>

3 files changed, 16 insertions, 12 deletions

diff --git a/testing/embedder_test.cpp b/testing/embedder_test.cpp
index 36ee08f85d..bb202bff1c 100644
--- a/testing/embedder_test.cpp
+++ b/testing/embedder_test.cpp
@@ -106,6 +106,8 @@ void EmbedderTest::SetUp() {
   info->version = 1;
   info->FSDK_UnSupport_Handler = UnsupportedHandlerTrampoline;
   FSDK_SetUnSpObjProcessHandler(info);
+
+  m_SavedDocument = nullptr;
 }
 
 void EmbedderTest::TearDown() {
@@ -347,6 +349,10 @@ FPDF_PAGE EmbedderTest::LoadSavedPage(int page_number) {
   return page;
 }
 
+FPDF_BITMAP EmbedderTest::RenderSavedPage(FPDF_PAGE page) {
+  return RenderPageWithFlags(page, m_SavedForm, 0);
+}
+
 void EmbedderTest::CloseSavedPage(FPDF_PAGE page) {
   ASSERT(page);
   FPDF_ClosePage(page);
@@ -424,14 +430,14 @@ FPDF_PAGE EmbedderTest::GetPageTrampoline(FPDF_FORMFILLINFO* info,
                                                               page_index);
 }
 
-std::string EmbedderTest::HashBitmap(FPDF_BITMAP bitmap,
-                                     int expected_width,
-                                     int expected_height) {
+// static
+std::string EmbedderTest::HashBitmap(FPDF_BITMAP bitmap) {
   uint8_t digest[16];
-  CRYPT_MD5Generate(
-      static_cast<uint8_t*>(FPDFBitmap_GetBuffer(bitmap)),
-      expected_width * GetBitmapBytesPerPixel(bitmap) * expected_height,
-      digest);
+  CRYPT_MD5Generate(static_cast<uint8_t*>(FPDFBitmap_GetBuffer(bitmap)),
+                    FPDFBitmap_GetWidth(bitmap) *
+                        GetBitmapBytesPerPixel(bitmap) *
+                        FPDFBitmap_GetHeight(bitmap),
+                    digest);
   return CryptToBase16(digest);
 }
 
@@ -452,8 +458,7 @@ void EmbedderTest::CompareBitmap(FPDF_BITMAP bitmap,
   if (!expected_md5sum)
     return;
 
-  EXPECT_EQ(expected_md5sum,
-            HashBitmap(bitmap, expected_width, expected_height));
+  EXPECT_EQ(expected_md5sum, HashBitmap(bitmap));
 }
 
 // static
diff --git a/testing/embedder_test.h b/testing/embedder_test.h
index df9e837f0f..7b6b40a818 100644
--- a/testing/embedder_test.h
+++ b/testing/embedder_test.h
@@ -125,9 +125,7 @@ class EmbedderTest : public ::testing::Test,
   FPDF_FORMHANDLE SetupFormFillEnvironment(FPDF_DOCUMENT doc);
 
   // Return the hash of |bitmap|.
-  static std::string HashBitmap(FPDF_BITMAP bitmap,
-                                int expected_width,
-                                int expected_height);
+  static std::string HashBitmap(FPDF_BITMAP bitmap);
 
   // Check |bitmap| to make sure it has the right dimensions and content.
   static void CompareBitmap(FPDF_BITMAP bitmap,
@@ -146,6 +144,7 @@ class EmbedderTest : public ::testing::Test,
   FPDF_DOCUMENT OpenSavedDocument(const char* password = nullptr);
   void CloseSavedDocument();
   FPDF_PAGE LoadSavedPage(int page_number);
+  FPDF_BITMAP RenderSavedPage(FPDF_PAGE page);
   void CloseSavedPage(FPDF_PAGE page);
   void VerifySavedRendering(FPDF_PAGE page,
                             int width,
diff --git a/testing/resources/linearized.pdf b/testing/resources/linearized.pdf
new file mode 100644
index 0000000000..3c2d3a25a2
--- /dev/null
+++ b/testing/resources/linearized.pdf