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

ui/base/template_expressions_unittest.cc

Index: ui/base/template_expressions_unittest.cc
diff --git a/ui/base/template_expressions_unittest.cc b/ui/base/template_expressions_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..77d46e797c837820d07b9c606bf73b0dce39baea
--- /dev/null
+++ b/ui/base/template_expressions_unittest.cc
@@ -0,0 +1,42 @@
+// Copyright 2013 The Chromium Authors. All rights reserved.

[Dan Beam, 2015/07/15 18:56:41]

nit: 2015

[dschuyler, 2015/07/15 21:40:44]

Done.

+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "ui/base/template_expressions.h"
+
+#include "base/strings/utf_string_conversions.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace ui {
+
+TEST(TemplateExpressionsTest, ReplaceTemplateExpressionsPieces) {
+  std::map<base::StringPiece, std::string> substitutions;
+  substitutions["test"] = "word";
+  substitutions["5"] = "number";
+  substitutions[""] = "blank";
+
+  EXPECT_EQ(ReplaceTemplateExpressions("${ab${cd}ef}", substitutions), "ef}");
+  EXPECT_EQ(ReplaceTemplateExpressions("${}", substitutions), "blank");
+  EXPECT_EQ(ReplaceTemplateExpressions("", substitutions), "");
+  EXPECT_EQ(ReplaceTemplateExpressions("${test}", substitutions), "word");
+  EXPECT_EQ(ReplaceTemplateExpressions("${5} ", substitutions), "number ");
+  EXPECT_EQ(
+      ReplaceTemplateExpressions("multiple: ${test}, ${5}.", substitutions),
+      "multiple: word, number.");
+}
+
+TEST(TemplateExpressionsTest,
+     ReplaceTemplateExpressionsConsecutiveDollarSignsPieces) {
+  std::map<base::StringPiece, std::string> substitutions;
+  substitutions["a"] = "9a";
+  substitutions["b"] = "8b";
+  substitutions["c"] = "7c";

[Dan Beam, 2015/07/15 18:56:41]

nit: 9a 8b 7c -> x y z

[dschuyler, 2015/07/15 21:40:44]

Done.

+  EXPECT_EQ(
+      ReplaceTemplateExpressions("$${a} $$${b} $$$${c} $$", substitutions),

[Dan Beam, 2015/07/15 18:56:41]

nit: $$ first

[dschuyler, 2015/07/15 21:40:44]

Based on our conversation, this is changing if we're removing the escape option.

+      "${a} $${b} $$${c} $");
+  EXPECT_EQ(ReplaceTemplateExpressions("$12", substitutions), "12");
+  EXPECT_EQ(ReplaceTemplateExpressions("$$", substitutions), "$");

[Dan Beam, 2015/07/15 18:56:41]

duplicative

[dschuyler, 2015/07/15 21:40:44]

Done.

+  EXPECT_EQ(ReplaceTemplateExpressions("$", substitutions), "");
+}
+
+}  // namespace ui