| // Copyright (c) 2012 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/json/json_writer.h" |
| |
| #include "base/memory/ptr_util.h" |
| #include "base/values.h" |
| #include "build/build_config.h" |
| #include "testing/gtest/include/gtest/gtest.h" |
| |
| namespace base { |
| |
| TEST(JSONWriterTest, BasicTypes) { |
| std::string output_js; |
| |
| // Test null. |
| EXPECT_TRUE(JSONWriter::Write(Value(), &output_js)); |
| EXPECT_EQ("null", output_js); |
| |
| // Test empty dict. |
| EXPECT_TRUE(JSONWriter::Write(DictionaryValue(), &output_js)); |
| EXPECT_EQ("{}", output_js); |
| |
| // Test empty list. |
| EXPECT_TRUE(JSONWriter::Write(ListValue(), &output_js)); |
| EXPECT_EQ("[]", output_js); |
| |
| // Test integer values. |
| EXPECT_TRUE(JSONWriter::Write(Value(42), &output_js)); |
| EXPECT_EQ("42", output_js); |
| |
| // Test boolean values. |
| EXPECT_TRUE(JSONWriter::Write(Value(true), &output_js)); |
| EXPECT_EQ("true", output_js); |
| |
| // Test Real values should always have a decimal or an 'e'. |
| EXPECT_TRUE(JSONWriter::Write(Value(1.0), &output_js)); |
| EXPECT_EQ("1.0", output_js); |
| |
| // Test Real values in the the range (-1, 1) must have leading zeros |
| EXPECT_TRUE(JSONWriter::Write(Value(0.2), &output_js)); |
| EXPECT_EQ("0.2", output_js); |
| |
| // Test Real values in the the range (-1, 1) must have leading zeros |
| EXPECT_TRUE(JSONWriter::Write(Value(-0.8), &output_js)); |
| EXPECT_EQ("-0.8", output_js); |
| |
| // Test String values. |
| EXPECT_TRUE(JSONWriter::Write(Value("foo"), &output_js)); |
| EXPECT_EQ("\"foo\"", output_js); |
| } |
| |
| TEST(JSONWriterTest, NestedTypes) { |
| std::string output_js; |
| |
| // Writer unittests like empty list/dict nesting, |
| // list list nesting, etc. |
| DictionaryValue root_dict; |
| std::unique_ptr<ListValue> list(new ListValue()); |
| std::unique_ptr<DictionaryValue> inner_dict(new DictionaryValue()); |
| inner_dict->SetInteger("inner int", 10); |
| list->Append(std::move(inner_dict)); |
| list->Append(std::make_unique<ListValue>()); |
| list->AppendBoolean(true); |
| root_dict.Set("list", std::move(list)); |
| |
| // Test the pretty-printer. |
| EXPECT_TRUE(JSONWriter::Write(root_dict, &output_js)); |
| EXPECT_EQ("{\"list\":[{\"inner int\":10},[],true]}", output_js); |
| EXPECT_TRUE(JSONWriter::WriteWithOptions( |
| root_dict, JSONWriter::OPTIONS_PRETTY_PRINT, &output_js)); |
| |
| // The pretty-printer uses a different newline style on Windows than on |
| // other platforms. |
| #if defined(OS_WIN) |
| #define JSON_NEWLINE "\r\n" |
| #else |
| #define JSON_NEWLINE "\n" |
| #endif |
| EXPECT_EQ("{" JSON_NEWLINE |
| " \"list\": [ {" JSON_NEWLINE |
| " \"inner int\": 10" JSON_NEWLINE |
| " }, [ ], true ]" JSON_NEWLINE |
| "}" JSON_NEWLINE, |
| output_js); |
| #undef JSON_NEWLINE |
| } |
| |
| TEST(JSONWriterTest, KeysWithPeriods) { |
| std::string output_js; |
| |
| DictionaryValue period_dict; |
| period_dict.SetKey("a.b", base::Value(3)); |
| period_dict.SetKey("c", base::Value(2)); |
| std::unique_ptr<DictionaryValue> period_dict2(new DictionaryValue()); |
| period_dict2->SetKey("g.h.i.j", base::Value(1)); |
| period_dict.SetWithoutPathExpansion("d.e.f", std::move(period_dict2)); |
| EXPECT_TRUE(JSONWriter::Write(period_dict, &output_js)); |
| EXPECT_EQ("{\"a.b\":3,\"c\":2,\"d.e.f\":{\"g.h.i.j\":1}}", output_js); |
| |
| DictionaryValue period_dict3; |
| period_dict3.SetInteger("a.b", 2); |
| period_dict3.SetKey("a.b", base::Value(1)); |
| EXPECT_TRUE(JSONWriter::Write(period_dict3, &output_js)); |
| EXPECT_EQ("{\"a\":{\"b\":2},\"a.b\":1}", output_js); |
| } |
| |
| TEST(JSONWriterTest, BinaryValues) { |
| std::string output_js; |
| |
| // Binary values should return errors unless suppressed via the |
| // OPTIONS_OMIT_BINARY_VALUES flag. |
| std::unique_ptr<Value> root(Value::CreateWithCopiedBuffer("asdf", 4)); |
| EXPECT_FALSE(JSONWriter::Write(*root, &output_js)); |
| EXPECT_TRUE(JSONWriter::WriteWithOptions( |
| *root, JSONWriter::OPTIONS_OMIT_BINARY_VALUES, &output_js)); |
| EXPECT_TRUE(output_js.empty()); |
| |
| ListValue binary_list; |
| binary_list.Append(Value::CreateWithCopiedBuffer("asdf", 4)); |
| binary_list.Append(std::make_unique<Value>(5)); |
| binary_list.Append(Value::CreateWithCopiedBuffer("asdf", 4)); |
| binary_list.Append(std::make_unique<Value>(2)); |
| binary_list.Append(Value::CreateWithCopiedBuffer("asdf", 4)); |
| EXPECT_FALSE(JSONWriter::Write(binary_list, &output_js)); |
| EXPECT_TRUE(JSONWriter::WriteWithOptions( |
| binary_list, JSONWriter::OPTIONS_OMIT_BINARY_VALUES, &output_js)); |
| EXPECT_EQ("[5,2]", output_js); |
| |
| DictionaryValue binary_dict; |
| binary_dict.Set("a", Value::CreateWithCopiedBuffer("asdf", 4)); |
| binary_dict.SetInteger("b", 5); |
| binary_dict.Set("c", Value::CreateWithCopiedBuffer("asdf", 4)); |
| binary_dict.SetInteger("d", 2); |
| binary_dict.Set("e", Value::CreateWithCopiedBuffer("asdf", 4)); |
| EXPECT_FALSE(JSONWriter::Write(binary_dict, &output_js)); |
| EXPECT_TRUE(JSONWriter::WriteWithOptions( |
| binary_dict, JSONWriter::OPTIONS_OMIT_BINARY_VALUES, &output_js)); |
| EXPECT_EQ("{\"b\":5,\"d\":2}", output_js); |
| } |
| |
| TEST(JSONWriterTest, DoublesAsInts) { |
| std::string output_js; |
| |
| // Test allowing a double with no fractional part to be written as an integer. |
| Value double_value(1e10); |
| EXPECT_TRUE(JSONWriter::WriteWithOptions( |
| double_value, JSONWriter::OPTIONS_OMIT_DOUBLE_TYPE_PRESERVATION, |
| &output_js)); |
| EXPECT_EQ("10000000000", output_js); |
| } |
| |
| } // namespace base |