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 9namespace base { 10 11TEST(JSONWriterTest, Writing) { 12 // Test null 13 Value* root = Value::CreateNullValue(); 14 std::string output_js; 15 JSONWriter::Write(root, &output_js); 16 ASSERT_EQ("null", output_js); 17 delete root; 18 19 // Test empty dict 20 root = new DictionaryValue; 21 JSONWriter::Write(root, &output_js); 22 ASSERT_EQ("{}", output_js); 23 delete root; 24 25 // Test empty list 26 root = new ListValue; 27 JSONWriter::Write(root, &output_js); 28 ASSERT_EQ("[]", output_js); 29 delete root; 30 31 // Test Real values should always have a decimal or an 'e'. 32 root = new FundamentalValue(1.0); 33 JSONWriter::Write(root, &output_js); 34 ASSERT_EQ("1.0", output_js); 35 delete root; 36 37 // Test Real values in the the range (-1, 1) must have leading zeros 38 root = new FundamentalValue(0.2); 39 JSONWriter::Write(root, &output_js); 40 ASSERT_EQ("0.2", output_js); 41 delete root; 42 43 // Test Real values in the the range (-1, 1) must have leading zeros 44 root = new FundamentalValue(-0.8); 45 JSONWriter::Write(root, &output_js); 46 ASSERT_EQ("-0.8", output_js); 47 delete root; 48 49 // Writer unittests like empty list/dict nesting, 50 // list list nesting, etc. 51 DictionaryValue root_dict; 52 ListValue* list = new ListValue; 53 root_dict.Set("list", list); 54 DictionaryValue* inner_dict = new DictionaryValue; 55 list->Append(inner_dict); 56 inner_dict->SetInteger("inner int", 10); 57 ListValue* inner_list = new ListValue; 58 list->Append(inner_list); 59 list->Append(new FundamentalValue(true)); 60 61 // Test the pretty-printer. 62 JSONWriter::Write(&root_dict, &output_js); 63 ASSERT_EQ("{\"list\":[{\"inner int\":10},[],true]}", output_js); 64 JSONWriter::WriteWithOptions(&root_dict, JSONWriter::OPTIONS_PRETTY_PRINT, 65 &output_js); 66 // The pretty-printer uses a different newline style on Windows than on 67 // other platforms. 68#if defined(OS_WIN) 69#define JSON_NEWLINE "\r\n" 70#else 71#define JSON_NEWLINE "\n" 72#endif 73 ASSERT_EQ("{" JSON_NEWLINE 74 " \"list\": [ {" JSON_NEWLINE 75 " \"inner int\": 10" JSON_NEWLINE 76 " }, [ ], true ]" JSON_NEWLINE 77 "}" JSON_NEWLINE, 78 output_js); 79#undef JSON_NEWLINE 80 81 // Test keys with periods 82 DictionaryValue period_dict; 83 period_dict.SetWithoutPathExpansion("a.b", new FundamentalValue(3)); 84 period_dict.SetWithoutPathExpansion("c", new FundamentalValue(2)); 85 DictionaryValue* period_dict2 = new DictionaryValue; 86 period_dict2->SetWithoutPathExpansion("g.h.i.j", new FundamentalValue(1)); 87 period_dict.SetWithoutPathExpansion("d.e.f", period_dict2); 88 JSONWriter::Write(&period_dict, &output_js); 89 ASSERT_EQ("{\"a.b\":3,\"c\":2,\"d.e.f\":{\"g.h.i.j\":1}}", output_js); 90 91 DictionaryValue period_dict3; 92 period_dict3.Set("a.b", new FundamentalValue(2)); 93 period_dict3.SetWithoutPathExpansion("a.b", new FundamentalValue(1)); 94 JSONWriter::Write(&period_dict3, &output_js); 95 ASSERT_EQ("{\"a\":{\"b\":2},\"a.b\":1}", output_js); 96 97 // Test omitting binary values. 98 root = BinaryValue::CreateWithCopiedBuffer("asdf", 4); 99 JSONWriter::WriteWithOptions(root, JSONWriter::OPTIONS_OMIT_BINARY_VALUES, 100 &output_js); 101 ASSERT_TRUE(output_js.empty()); 102 delete root; 103 104 ListValue binary_list; 105 binary_list.Append(new FundamentalValue(5)); 106 binary_list.Append(BinaryValue::CreateWithCopiedBuffer("asdf", 4)); 107 binary_list.Append(new FundamentalValue(2)); 108 JSONWriter::WriteWithOptions(&binary_list, 109 JSONWriter::OPTIONS_OMIT_BINARY_VALUES, 110 &output_js); 111 ASSERT_EQ("[5,2]", output_js); 112 113 DictionaryValue binary_dict; 114 binary_dict.Set("a", new FundamentalValue(5)); 115 binary_dict.Set("b", BinaryValue::CreateWithCopiedBuffer("asdf", 4)); 116 binary_dict.Set("c", new FundamentalValue(2)); 117 JSONWriter::WriteWithOptions(&binary_dict, 118 JSONWriter::OPTIONS_OMIT_BINARY_VALUES, 119 &output_js); 120 ASSERT_EQ("{\"a\":5,\"c\":2}", output_js); 121 122 // Test allowing a double with no fractional part to be written as an integer. 123 FundamentalValue double_value(1e10); 124 JSONWriter::WriteWithOptions( 125 &double_value, 126 JSONWriter::OPTIONS_OMIT_DOUBLE_TYPE_PRESERVATION, 127 &output_js); 128 ASSERT_EQ("10000000000", output_js); 129} 130 131} // namespace base 132