Add fpdf_edit basic creation embedder test.

testing/embedder_test.cpp

 // 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 "testing/embedder_test.h"
 
 #include <limits.h>
 
 #include <list>
 #include <string>
@@ skipping 75 matching lines @@
 
 #ifdef PDF_ENABLE_V8
   v8::V8::ShutdownPlatform();
   delete platform_;
 #endif  // PDF_ENABLE_V8
 
   delete loader_;
   free(file_contents_);
 }
 
+bool EmbedderTest::CreateEmptyDocument() {
+  document_ = FPDF_CreateNewDocument();
+  if (!document_)
+    return false;
+
+  SetupFormFillEnvironment();
+  return true;
+}
+
 bool EmbedderTest::OpenDocument(const std::string& filename,
                                 bool must_linearize) {
   std::string file_path;
   if (!PathService::GetTestFilePath(filename, &file_path))
     return false;
   file_contents_ = GetFileContents(file_path.c_str(), &file_length_);
   if (!file_contents_)
     return false;
 
   loader_ = new TestLoader(file_contents_, file_length_);
@@ skipping 39 matching lines @@
     if (must_linearize) {
       return false;
     }
     document_ = FPDF_LoadCustomDocument(&file_access_, nullptr);
     if (!document_) {
       return false;
     }
   }
 
   (void)FPDF_GetDocPermissions(document_);
+  SetupFormFillEnvironment();
+  return true;
+}
 
+void EmbedderTest::SetupFormFillEnvironment() {
   IPDF_JSPLATFORM* platform = static_cast<IPDF_JSPLATFORM*>(this);
   memset(platform, 0, sizeof(IPDF_JSPLATFORM));
   platform->version = 2;
   platform->app_alert = AlertTrampoline;
 
   FPDF_FORMFILLINFO* formfillinfo = static_cast<FPDF_FORMFILLINFO*>(this);
   memset(formfillinfo, 0, sizeof(FPDF_FORMFILLINFO));
   formfillinfo->version = 1;
   formfillinfo->FFI_SetTimer = SetTimerTrampoline;
   formfillinfo->FFI_KillTimer = KillTimerTrampoline;
   formfillinfo->FFI_GetPage = GetPageTrampoline;
   formfillinfo->m_pJsPlatform = platform;
 
   form_handle_ = FPDFDOC_InitFormFillEnvironment(document_, formfillinfo);
   FPDF_SetFormFieldHighlightColor(form_handle_, 0, 0xFFE4DD);
   FPDF_SetFormFieldHighlightAlpha(form_handle_, 100);
-
-  return true;
 }
 
 void EmbedderTest::DoOpenActions() {
   FORM_DoDocumentJSAction(form_handle_);
   FORM_DoDocumentOpenAction(form_handle_);
 }
 
 int EmbedderTest::GetFirstPageNum() {
   int first_page = FPDFAvail_GetFirstPageNum(document_);
   (void)FPDFAvail_IsPageAvail(avail_, first_page, &hints_);
@@ skipping 101 matching lines @@
 }
 
 // Can't use gtest-provided main since we need to stash the path to the
 // executable in order to find the external V8 binary data files.
 int main(int argc, char** argv) {
   g_exe_path_ = argv[0];
   testing::InitGoogleTest(&argc, argv);
   testing::InitGoogleMock(&argc, argv);
   return RUN_ALL_TESTS();
 }