Add test for StringToCode and StringToWideString.

core/src/fpdfapi/fpdf_font/fpdf_font_unittest.cpp

Index: core/src/fpdfapi/fpdf_font/fpdf_font_unittest.cpp
diff --git a/core/src/fpdfapi/fpdf_font/fpdf_font_unittest.cpp b/core/src/fpdfapi/fpdf_font/fpdf_font_unittest.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..9101ca11c6f8c1a40a3b765062ece42e610f5265
--- /dev/null
+++ b/core/src/fpdfapi/fpdf_font/fpdf_font_unittest.cpp
@@ -0,0 +1,36 @@
+// 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/gtest/include/gtest/gtest.h"
+
+#include "font_int.h"
+
+TEST(fpdf_font, StringToCode) {
+  CPDF_ToUnicodeMap to_map;
+
+  EXPECT_EQ(0, to_map.StringToCode(""));
+  EXPECT_EQ(194, to_map.StringToCode("<c2"));
+  EXPECT_EQ(162, to_map.StringToCode("<A2"));
+  EXPECT_EQ(2802, to_map.StringToCode("<Af2"));
+  EXPECT_EQ(12, to_map.StringToCode("12"));
+  EXPECT_EQ(128, to_map.StringToCode("128"));
+}
+
+TEST(fpdf_font, StringToWideString) {
+  CPDF_ToUnicodeMap to_map;
+
+  EXPECT_EQ(L"", to_map.StringToWideString(""));
+  EXPECT_EQ(L"", to_map.StringToWideString("1234"));
+
+  EXPECT_EQ(L"", to_map.StringToWideString("<c2"));
+
+  CFX_WideString res = L"";
+  res += 49835;

[Tom Sepez, 2015/11/02 18:00:28]

????

[dsinclair, 2015/11/02 18:14:28]

Done.

Converted to res += L"\xc2ab"; to be clearer what's happeninng/

+  EXPECT_EQ(res, to_map.StringToWideString("<c2ab"));
+  EXPECT_EQ(res, to_map.StringToWideString("<c2abab"));
+  EXPECT_EQ(res, to_map.StringToWideString("<c2ab 1234"));
+
+  res += 64171;
+  EXPECT_EQ(res, to_map.StringToWideString("<c2abFaAb"));
+}