1 // Copyright (c) 2013 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #include "base/json/string_escape.h" 6 7 #include <gtest/gtest.h> 8 #include <stddef.h> 9 10 #include "base/macros.h" 11 #include "base/strings/string_util.h" 12 #include "base/strings/utf_string_conversion_utils.h" 13 14 namespace base { 15 16 TEST(JSONStringEscapeTest, EscapeUTF8) { 17 const struct { 18 const char* to_escape; 19 const char* escaped; 20 } cases[] = { 21 {"\b\001aZ\"\\wee", "\\b\\u0001aZ\\\"\\\\wee"}, 22 {"a\b\f\n\r\t\v\1\\.\"z", 23 "a\\b\\f\\n\\r\\t\\u000B\\u0001\\\\.\\\"z"}, 24 {"b\x0f\x7f\xf0\xff!", // \xf0\xff is not a valid UTF-8 unit. 25 "b\\u000F\x7F\xEF\xBF\xBD\xEF\xBF\xBD!"}, 26 {"c<>d", "c\\u003C>d"}, 27 {"Hello\xe2\x80\xa8world", "Hello\\u2028world"}, 28 {"\xe2\x80\xa9purple", "\\u2029purple"}, 29 }; 30 31 for (size_t i = 0; i < arraysize(cases); ++i) { 32 const char* in_ptr = cases[i].to_escape; 33 std::string in_str = in_ptr; 34 35 std::string out; 36 EscapeJSONString(in_ptr, false, &out); 37 EXPECT_EQ(std::string(cases[i].escaped), out); 38 EXPECT_TRUE(IsStringUTF8(out)); 39 40 out.erase(); 41 bool convert_ok = EscapeJSONString(in_str, false, &out); 42 EXPECT_EQ(std::string(cases[i].escaped), out); 43 EXPECT_TRUE(IsStringUTF8(out)); 44 45 if (convert_ok) { 46 std::string fooout = GetQuotedJSONString(in_str); 47 EXPECT_EQ("\"" + std::string(cases[i].escaped) + "\"", fooout); 48 EXPECT_TRUE(IsStringUTF8(out)); 49 } 50 } 51 52 std::string in = cases[0].to_escape; 53 std::string out; 54 EscapeJSONString(in, false, &out); 55 EXPECT_TRUE(IsStringUTF8(out)); 56 57 // test quoting 58 std::string out_quoted; 59 EscapeJSONString(in, true, &out_quoted); 60 EXPECT_EQ(out.length() + 2, out_quoted.length()); 61 EXPECT_EQ(out_quoted.find(out), 1U); 62 EXPECT_TRUE(IsStringUTF8(out_quoted)); 63 64 // now try with a NULL in the string 65 std::string null_prepend = "test"; 66 null_prepend.push_back(0); 67 in = null_prepend + in; 68 std::string expected = "test\\u0000"; 69 expected += cases[0].escaped; 70 out.clear(); 71 EscapeJSONString(in, false, &out); 72 EXPECT_EQ(expected, out); 73 EXPECT_TRUE(IsStringUTF8(out)); 74 } 75 76 TEST(JSONStringEscapeTest, EscapeBytes) { 77 const struct { 78 const char* to_escape; 79 const char* escaped; 80 } cases[] = { 81 {"b\x0f\x7f\xf0\xff!", "b\\u000F\\u007F\\u00F0\\u00FF!"}, 82 {"\xe5\xc4\x4f\x05\xb6\xfd", "\\u00E5\\u00C4O\\u0005\\u00B6\\u00FD"}, 83 }; 84 85 for (size_t i = 0; i < arraysize(cases); ++i) { 86 std::string in = std::string(cases[i].to_escape); 87 EXPECT_FALSE(IsStringUTF8(in)); 88 89 EXPECT_EQ(std::string(cases[i].escaped), 90 EscapeBytesAsInvalidJSONString(in, false)); 91 EXPECT_EQ("\"" + std::string(cases[i].escaped) + "\"", 92 EscapeBytesAsInvalidJSONString(in, true)); 93 } 94 95 const char kEmbedNull[] = { '\xab', '\x39', '\0', '\x9f', '\xab' }; 96 std::string in(kEmbedNull, arraysize(kEmbedNull)); 97 EXPECT_FALSE(IsStringUTF8(in)); 98 EXPECT_EQ(std::string("\\u00AB9\\u0000\\u009F\\u00AB"), 99 EscapeBytesAsInvalidJSONString(in, false)); 100 } 101 102 } // namespace base 103
