1 // Copyright (c) 2012 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/json_writer.h" 6 #include "base/values.h" 7 #include "testing/gtest/include/gtest/gtest.h" 8 9 namespace base { 10 11 TEST(JSONWriterTest, BasicTypes) { 12 std::string output_js; 13 14 // Test null. 15 Value* root = Value::CreateNullValue(); 16 EXPECT_TRUE(JSONWriter::Write(root, &output_js)); 17 EXPECT_EQ("null", output_js); 18 delete root; 19 20 // Test empty dict. 21 root = new DictionaryValue; 22 EXPECT_TRUE(JSONWriter::Write(root, &output_js)); 23 EXPECT_EQ("{}", output_js); 24 delete root; 25 26 // Test empty list. 27 root = new ListValue; 28 EXPECT_TRUE(JSONWriter::Write(root, &output_js)); 29 EXPECT_EQ("[]", output_js); 30 delete root; 31 32 // Test integer values. 33 root = new FundamentalValue(42); 34 EXPECT_TRUE(JSONWriter::Write(root, &output_js)); 35 EXPECT_EQ("42", output_js); 36 delete root; 37 38 // Test boolean values. 39 root = new FundamentalValue(true); 40 EXPECT_TRUE(JSONWriter::Write(root, &output_js)); 41 EXPECT_EQ("true", output_js); 42 delete root; 43 44 // Test Real values should always have a decimal or an 'e'. 45 root = new FundamentalValue(1.0); 46 EXPECT_TRUE(JSONWriter::Write(root, &output_js)); 47 EXPECT_EQ("1.0", output_js); 48 delete root; 49 50 // Test Real values in the the range (-1, 1) must have leading zeros 51 root = new FundamentalValue(0.2); 52 EXPECT_TRUE(JSONWriter::Write(root, &output_js)); 53 EXPECT_EQ("0.2", output_js); 54 delete root; 55 56 // Test Real values in the the range (-1, 1) must have leading zeros 57 root = new FundamentalValue(-0.8); 58 EXPECT_TRUE(JSONWriter::Write(root, &output_js)); 59 EXPECT_EQ("-0.8", output_js); 60 delete root; 61 62 // Test String values. 63 root = new StringValue("foo"); 64 EXPECT_TRUE(JSONWriter::Write(root, &output_js)); 65 EXPECT_EQ("\"foo\"", output_js); 66 delete root; 67 } 68 69 70 TEST(JSONWriterTest, NestedTypes) { 71 std::string output_js; 72 73 // Writer unittests like empty list/dict nesting, 74 // list list nesting, etc. 75 DictionaryValue root_dict; 76 ListValue* list = new ListValue; 77 root_dict.Set("list", list); 78 DictionaryValue* inner_dict = new DictionaryValue; 79 list->Append(inner_dict); 80 inner_dict->SetInteger("inner int", 10); 81 ListValue* inner_list = new ListValue; 82 list->Append(inner_list); 83 list->Append(new FundamentalValue(true)); 84 85 // Test the pretty-printer. 86 EXPECT_TRUE(JSONWriter::Write(&root_dict, &output_js)); 87 EXPECT_EQ("{\"list\":[{\"inner int\":10},[],true]}", output_js); 88 EXPECT_TRUE(JSONWriter::WriteWithOptions(&root_dict, 89 JSONWriter::OPTIONS_PRETTY_PRINT, 90 &output_js)); 91 92 // The pretty-printer uses a different newline style on Windows than on 93 // other platforms. 94 #if defined(OS_WIN) 95 #define JSON_NEWLINE "\r\n" 96 #else 97 #define JSON_NEWLINE "\n" 98 #endif 99 EXPECT_EQ("{" JSON_NEWLINE 100 " \"list\": [ {" JSON_NEWLINE 101 " \"inner int\": 10" JSON_NEWLINE 102 " }, [ ], true ]" JSON_NEWLINE 103 "}" JSON_NEWLINE, 104 output_js); 105 #undef JSON_NEWLINE 106 } 107 108 TEST(JSONWriterTest, KeysWithPeriods) { 109 std::string output_js; 110 111 DictionaryValue period_dict; 112 period_dict.SetWithoutPathExpansion("a.b", new FundamentalValue(3)); 113 period_dict.SetWithoutPathExpansion("c", new FundamentalValue(2)); 114 DictionaryValue* period_dict2 = new DictionaryValue; 115 period_dict2->SetWithoutPathExpansion("g.h.i.j", new FundamentalValue(1)); 116 period_dict.SetWithoutPathExpansion("d.e.f", period_dict2); 117 EXPECT_TRUE(JSONWriter::Write(&period_dict, &output_js)); 118 EXPECT_EQ("{\"a.b\":3,\"c\":2,\"d.e.f\":{\"g.h.i.j\":1}}", output_js); 119 120 DictionaryValue period_dict3; 121 period_dict3.Set("a.b", new FundamentalValue(2)); 122 period_dict3.SetWithoutPathExpansion("a.b", new FundamentalValue(1)); 123 EXPECT_TRUE(JSONWriter::Write(&period_dict3, &output_js)); 124 EXPECT_EQ("{\"a\":{\"b\":2},\"a.b\":1}", output_js); 125 } 126 127 TEST(JSONWriterTest, BinaryValues) { 128 std::string output_js; 129 130 // Binary values should return errors unless suppressed via the 131 // OPTIONS_OMIT_BINARY_VALUES flag. 132 Value* root = BinaryValue::CreateWithCopiedBuffer("asdf", 4); 133 EXPECT_FALSE(JSONWriter::Write(root, &output_js)); 134 EXPECT_TRUE(JSONWriter::WriteWithOptions( 135 root, JSONWriter::OPTIONS_OMIT_BINARY_VALUES, &output_js)); 136 EXPECT_TRUE(output_js.empty()); 137 delete root; 138 139 ListValue binary_list; 140 binary_list.Append(BinaryValue::CreateWithCopiedBuffer("asdf", 4)); 141 binary_list.Append(new FundamentalValue(5)); 142 binary_list.Append(BinaryValue::CreateWithCopiedBuffer("asdf", 4)); 143 binary_list.Append(new FundamentalValue(2)); 144 binary_list.Append(BinaryValue::CreateWithCopiedBuffer("asdf", 4)); 145 EXPECT_FALSE(JSONWriter::Write(&binary_list, &output_js)); 146 EXPECT_TRUE(JSONWriter::WriteWithOptions( 147 &binary_list, JSONWriter::OPTIONS_OMIT_BINARY_VALUES, &output_js)); 148 EXPECT_EQ("[5,2]", output_js); 149 150 DictionaryValue binary_dict; 151 binary_dict.Set("a", BinaryValue::CreateWithCopiedBuffer("asdf", 4)); 152 binary_dict.Set("b", new FundamentalValue(5)); 153 binary_dict.Set("c", BinaryValue::CreateWithCopiedBuffer("asdf", 4)); 154 binary_dict.Set("d", new FundamentalValue(2)); 155 binary_dict.Set("e", BinaryValue::CreateWithCopiedBuffer("asdf", 4)); 156 EXPECT_FALSE(JSONWriter::Write(&binary_dict, &output_js)); 157 EXPECT_TRUE(JSONWriter::WriteWithOptions( 158 &binary_dict, JSONWriter::OPTIONS_OMIT_BINARY_VALUES, &output_js)); 159 EXPECT_EQ("{\"b\":5,\"d\":2}", output_js); 160 } 161 162 TEST(JSONWriterTest, DoublesAsInts) { 163 std::string output_js; 164 165 // Test allowing a double with no fractional part to be written as an integer. 166 FundamentalValue double_value(1e10); 167 EXPECT_TRUE(JSONWriter::WriteWithOptions( 168 &double_value, 169 JSONWriter::OPTIONS_OMIT_DOUBLE_TYPE_PRESERVATION, 170 &output_js)); 171 EXPECT_EQ("10000000000", output_js); 172 } 173 174 } // namespace base 175
