Add test which verify, that "Info" from linearized doc is correctly saved.

Change-Id: Ib0ee1c2b0a2def650711c87b4eb04a9f88470944
Reviewed-on: https://pdfium-review.googlesource.com/35550
Commit-Queue: Art Snake <art-snake@yandex-team.ru>
Reviewed-by: dsinclair <dsinclair@chromium.org>

1 files changed, 66 insertions, 0 deletions

diff --git a/core/fpdfapi/edit/cpdf_creator_embeddertest.cpp b/core/fpdfapi/edit/cpdf_creator_embeddertest.cpp
index f8520c4238..2d431b8424 100644
--- a/core/fpdfapi/edit/cpdf_creator_embeddertest.cpp
+++ b/core/fpdfapi/edit/cpdf_creator_embeddertest.cpp
@@ -13,8 +13,47 @@
 #include "public/fpdf_edit.h"
 #include "public/fpdfview.h"
 #include "testing/embedder_test.h"
+#include "testing/fake_file_access.h"
 #include "testing/gmock/include/gmock/gmock-matchers.h"
 #include "testing/gtest/include/gtest/gtest.h"
+#include "testing/utils/path_service.h"
+
+namespace {
+
+class FileAccess : public FPDF_FILEACCESS {
+ public:
+  explicit FileAccess(const std::string& file_name) {
+    std::string file_path;
+    if (!PathService::GetTestFilePath(file_name, &file_path))
+      return;
+
+    file_contents_ = GetFileContents(file_path.c_str(), &file_length_);
+    if (!file_contents_)
+      return;
+
+    m_FileLen = static_cast<unsigned long>(file_length_);
+    m_GetBlock = SGetBlock;
+    m_Param = this;
+  }
+
+ private:
+  int GetBlockImpl(unsigned long pos, unsigned char* pBuf, unsigned long size) {
+    memcpy(pBuf, file_contents_.get() + pos, size);
+    return size;
+  }
+
+  static int SGetBlock(void* param,
+                       unsigned long pos,
+                       unsigned char* pBuf,
+                       unsigned long size) {
+    return static_cast<FileAccess*>(param)->GetBlockImpl(pos, pBuf, size);
+  }
+
+  size_t file_length_;
+  std::unique_ptr<char, pdfium::FreeDeleter> file_contents_;
+};
+
+}  // namespace
 
 class CPDF_CreatorEmbedderTest : public EmbedderTest {};
 
@@ -62,3 +101,30 @@ TEST_F(CPDF_CreatorEmbedderTest, BUG_873) {
   std::string data_after_second_id = saved_data.substr(trailer_continuation);
   EXPECT_THAT(data_after_second_id, testing::StartsWith(">]>>\r\n"));
 }
+
+TEST_F(CPDF_CreatorEmbedderTest, SaveLinearizedInfo) {
+  FileAccess file_acc("linearized.pdf");
+  FakeFileAccess fake_acc(&file_acc);
+
+  avail_ = FPDFAvail_Create(fake_acc.GetFileAvail(), fake_acc.GetFileAccess());
+  while (PDF_DATA_AVAIL !=
+         FPDFAvail_IsDocAvail(avail_, fake_acc.GetDownloadHints())) {
+    fake_acc.SetRequestedDataAvailable();
+  }
+
+  document_ = FPDFAvail_GetDocument(avail_, nullptr);
+  ASSERT_TRUE(document_);
+
+  // Load second page, to parse additional crossref sections.
+  while (PDF_DATA_AVAIL !=
+         FPDFAvail_IsPageAvail(avail_, 1, fake_acc.GetDownloadHints())) {
+    fake_acc.SetRequestedDataAvailable();
+  }
+  // Simulate downloading of whole file.
+  fake_acc.SetWholeFileAvailable();
+  // Save document.
+  EXPECT_TRUE(FPDF_SaveAsCopy(document_, this, 0));
+  const std::string saved_doc = GetString();
+
+  EXPECT_THAT(saved_doc, ::testing::HasSubstr("/Info"));
+}