Pass CFX_*StringCs to FX_HashCode_GETA and _GETW hash functions.

core/fxcrt/fx_extension_unittest.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/gtest/include/gtest/gtest.h"
 
 #include "core/fxcrt/include/fx_ext.h"
 
 TEST(fxcrt, FXSYS_toHexDigit) {
   EXPECT_EQ(10, FXSYS_toHexDigit('a'));
   EXPECT_EQ(10, FXSYS_toHexDigit('A'));
   EXPECT_EQ(7, FXSYS_toHexDigit('7'));
   EXPECT_EQ(0, FXSYS_toHexDigit('i'));
 }
 
 TEST(fxcrt, FXSYS_toDecimalDigit) {
   EXPECT_EQ(7, FXSYS_toDecimalDigit('7'));
   EXPECT_EQ(0, FXSYS_toDecimalDigit('a'));
   EXPECT_EQ(7, FXSYS_toDecimalDigit(L'7'));
   EXPECT_EQ(0, FXSYS_toDecimalDigit(L'a'));
 }
 
 TEST(fxcrt, FXSYS_isDecimalDigit) {
   EXPECT_TRUE(FXSYS_isDecimalDigit('7'));
   EXPECT_TRUE(FXSYS_isDecimalDigit(L'7'));
   EXPECT_FALSE(FXSYS_isDecimalDigit('a'));
   EXPECT_FALSE(FXSYS_isDecimalDigit(L'a'));
 }
+
+TEST(fxcrt, FX_HashCode_Ascii) {
+  EXPECT_EQ(0u, FX_HashCode_GetA("", false));
+  EXPECT_EQ(65u, FX_HashCode_GetA("A", false));
+  EXPECT_EQ(97u, FX_HashCode_GetA("A", true));
+  EXPECT_EQ(31 * 65u + 66u, FX_HashCode_GetA("AB", false));
+}
+
+TEST(fxcrt, FX_HashCode_Wide) {
+  EXPECT_EQ(0u, FX_HashCode_GetW(L"", false));
+  EXPECT_EQ(65u, FX_HashCode_GetW(L"A", false));
+  EXPECT_EQ(97u, FX_HashCode_GetW(L"A", true));
+  EXPECT_EQ(1313 * 65u + 66u, FX_HashCode_GetW(L"AB", false));
+}