Add API tests for NamedDestsByName, DestGetPageIndex.

fpdfsdk/src/fpdfview_embeddertest.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 <limits>
 #include <string>
 
 #include "../../testing/embedder_test.h"
 #include "../../fpdfsdk/include/fpdfview.h"
 #include "testing/gtest/include/gtest/gtest.h"
@@ skipping 122 matching lines @@
   dest = FPDF_GetNamedDest(document(), std::numeric_limits<int>::min(),
                            fixed_buffer, buffer_size);
   EXPECT_EQ(nullptr, dest);
   EXPECT_EQ(sizeof(fixed_buffer), buffer_size);  // unmodified.
 
   buffer_size = sizeof(fixed_buffer);
   dest = FPDF_GetNamedDest(document(), -1, fixed_buffer, buffer_size);
   EXPECT_EQ(nullptr, dest);
   EXPECT_EQ(sizeof(fixed_buffer), buffer_size);  // unmodified.
 }
+
+TEST_F(FPDFViewEmbeddertest, NamedDestsByName) {
+  EXPECT_TRUE(OpenDocument("testing/resources/named_dests.pdf"));
+
+  // Null pointer returns NULL.
+  FPDF_DEST dest = FPDF_GetNamedDestByName(document(), nullptr);
+  EXPECT_EQ(nullptr, dest);
+
+  // Empty string returns NULL.
+  dest = FPDF_GetNamedDestByName(document(), "");
+  EXPECT_EQ(nullptr, dest);
+
+  // Item from Dests NameTree.
+  dest = FPDF_GetNamedDestByName(document(), "First");
+  EXPECT_NE(nullptr, dest);
+
+  long ignore_len = 0;
+  FPDF_DEST dest_by_index =
+      FPDF_GetNamedDest(document(), 0, nullptr, ignore_len);
+  EXPECT_EQ(dest_by_index, dest);
+
+  // Item from Dests dictionary.
+  dest = FPDF_GetNamedDestByName(document(), "FirstAlternate");
+  EXPECT_NE(nullptr, dest);
+
+  ignore_len = 0;
+  dest_by_index = FPDF_GetNamedDest(document(), 4, nullptr, ignore_len);
+  EXPECT_EQ(dest_by_index, dest);
+
+  // Bad value type for item from Dests NameTree array.
+  dest = FPDF_GetNamedDestByName(document(), "WrongType");
+  EXPECT_EQ(nullptr, dest);
+
+  // No such destination in either Dest NameTree or dictionary.
+  dest = FPDF_GetNamedDestByName(document(), "Bogus");
+  EXPECT_EQ(nullptr, dest);
+}