// 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/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::CreateNullValue(), &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(FundamentalValue(42), &output_js)); EXPECT_EQ("42", output_js); // Test boolean values. EXPECT_TRUE(JSONWriter::Write(FundamentalValue(true), &output_js)); EXPECT_EQ("true", output_js); // Test Real values should always have a decimal or an 'e'. EXPECT_TRUE(JSONWriter::Write(FundamentalValue(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(FundamentalValue(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(FundamentalValue(-0.8), &output_js)); EXPECT_EQ("-0.8", output_js); // Test String values. EXPECT_TRUE(JSONWriter::Write(StringValue("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; scoped_ptr<ListValue> list(new ListValue()); scoped_ptr<DictionaryValue> inner_dict(new DictionaryValue()); inner_dict->SetInteger("inner int", 10); list->Append(std::move(inner_dict)); list->Append(make_scoped_ptr(new 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.SetIntegerWithoutPathExpansion("a.b", 3); period_dict.SetIntegerWithoutPathExpansion("c", 2); scoped_ptr<DictionaryValue> period_dict2(new DictionaryValue()); period_dict2->SetIntegerWithoutPathExpansion("g.h.i.j", 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.SetIntegerWithoutPathExpansion("a.b", 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. scoped_ptr<Value> root(BinaryValue::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(BinaryValue::CreateWithCopiedBuffer("asdf", 4)); binary_list.Append(make_scoped_ptr(new FundamentalValue(5))); binary_list.Append(BinaryValue::CreateWithCopiedBuffer("asdf", 4)); binary_list.Append(make_scoped_ptr(new FundamentalValue(2))); binary_list.Append(BinaryValue::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", make_scoped_ptr(BinaryValue::CreateWithCopiedBuffer("asdf", 4))); binary_dict.SetInteger("b", 5); binary_dict.Set( "c", make_scoped_ptr(BinaryValue::CreateWithCopiedBuffer("asdf", 4))); binary_dict.SetInteger("d", 2); binary_dict.Set( "e", make_scoped_ptr(BinaryValue::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. FundamentalValue double_value(1e10); EXPECT_TRUE(JSONWriter::WriteWithOptions( double_value, JSONWriter::OPTIONS_OMIT_DOUBLE_TYPE_PRESERVATION, &output_js)); EXPECT_EQ("10000000000", output_js); } } // namespace base