[ui/base;css] adding string template expression replacement

base/strings/string_util_unittest.cc

 // Copyright 2013 The Chromium 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 "base/strings/string_util.h"
 
 #include <math.h>
 #include <stdarg.h>
 
 #include <algorithm>
@@ skipping 865 matching lines @@
   EXPECT_FALSE(EndsWith(string16(), ASCIIToUTF16(".plugin"), true));
   EXPECT_TRUE(EndsWith(ASCIIToUTF16("Foo.plugin"), string16(), false));
   EXPECT_TRUE(EndsWith(ASCIIToUTF16("Foo.plugin"), string16(), true));
   EXPECT_TRUE(EndsWith(ASCIIToUTF16(".plugin"),
                        ASCIIToUTF16(".plugin"), false));
   EXPECT_TRUE(EndsWith(ASCIIToUTF16(".plugin"), ASCIIToUTF16(".plugin"), true));
   EXPECT_TRUE(EndsWith(string16(), string16(), false));
   EXPECT_TRUE(EndsWith(string16(), string16(), true));
 }
 
+TEST(StringUtilTest, StdStringReplaceStringPlaceholdersWithMap) {
+  std::map<std::string, std::string> subst;
+  subst.insert(std::pair<std::string, std::string>("one", "9a"));
+  subst.insert(std::pair<std::string, std::string>("b", "8b"));
+  subst.insert(std::pair<std::string, std::string>("cc", "7c"));
+  subst.insert(std::pair<std::string, std::string>("four", "6d"));
+  subst.insert(
+      std::pair<std::string, std::string>("very long with spaces", "5e"));
+  subst.insert(std::pair<std::string, std::string>("", "4f"));
+  subst.insert(std::pair<std::string, std::string>("&", "3g"));
+  subst.insert(std::pair<std::string, std::string>("$", "2h"));
+  subst.insert(std::pair<std::string, std::string>("$$", "1i"));
+
+  std::string formatted = ReplaceStringPlaceholders(
+      "${one}a,${b}b,${cc}c,${four}d,${very long with "
+      "spaces}e,${}f,${&}g,${$}h,${$$}i",
+      subst);
+
+  EXPECT_EQ(formatted, "9aa,8bb,7cc,6dd,5ee,4ff,3gg,2hh,1ii");
+}
+
+TEST(StringUtilTest, ReplaceStringPlaceholdersConsecutiveDollarSignsWithMap) {
+  std::map<std::string, std::string> subst;
+  subst.insert(std::pair<std::string, std::string>("a", "9a"));
+  subst.insert(std::pair<std::string, std::string>("b", "8b"));
+  subst.insert(std::pair<std::string, std::string>("c", "7c"));
+  EXPECT_EQ(ReplaceStringPlaceholders("$${a} $$${b} $$$${c} $$", subst),
+            "${a} $${b} $$${c} $");

[Dan Beam, 2015/07/07 02:23:31]

please add one like $12 and ensure 12 is left over (or something)

[dschuyler, 2015/07/07 23:05:30]

Done.

+  EXPECT_EQ(ReplaceStringPlaceholders("$$", subst), "$");
+  EXPECT_EQ(ReplaceStringPlaceholders("$", subst), "");
+}
+
 TEST(StringUtilTest, GetStringFWithOffsets) {
   std::vector<string16> subst;
   subst.push_back(ASCIIToUTF16("1"));
   subst.push_back(ASCIIToUTF16("2"));
   std::vector<size_t> offsets;
 
   ReplaceStringPlaceholders(ASCIIToUTF16("Hello, $1. Your number is $2."),
                             subst,
                             &offsets);
   EXPECT_EQ(2U, offsets.size());
@@ skipping 291 matching lines @@
   const std::string live = kLive;
   std::string dead = live;
   strncpy(WriteInto(&dead, 5), kDead, 4);
   EXPECT_EQ(kDead, dead);
   EXPECT_EQ(4u, dead.size());
   EXPECT_EQ(kLive, live);
   EXPECT_EQ(4u, live.size());
 }
 
 }  // namespace base