blob: 762092cb29ab4d89e2dcae2628bb60c0607a9df2 [file] [log] [blame]
// 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_reader.h"
#include <memory>
#include "base/base_paths.h"
#include "base/files/file_util.h"
#include "base/logging.h"
#include "base/macros.h"
#include "base/path_service.h"
#include "base/strings/string_piece.h"
#include "base/strings/utf_string_conversions.h"
#include "base/values.h"
#include "build/build_config.h"
#include "starboard/types.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace base {
TEST(JSONReaderTest, Whitespace) {
std::unique_ptr<Value> root = JSONReader().ReadToValue(" null ");
ASSERT_TRUE(root);
EXPECT_TRUE(root->is_none());
}
TEST(JSONReaderTest, InvalidString) {
EXPECT_FALSE(JSONReader().ReadToValue("nu"));
}
TEST(JSONReaderTest, SimpleBool) {
std::unique_ptr<Value> root = JSONReader().ReadToValue("true ");
ASSERT_TRUE(root);
EXPECT_TRUE(root->is_bool());
}
TEST(JSONReaderTest, EmbeddedComments) {
std::unique_ptr<Value> root = JSONReader().ReadToValue("/* comment */null");
ASSERT_TRUE(root);
EXPECT_TRUE(root->is_none());
root = JSONReader().ReadToValue("40 /* comment */");
ASSERT_TRUE(root);
EXPECT_TRUE(root->is_int());
root = JSONReader().ReadToValue("true // comment");
ASSERT_TRUE(root);
EXPECT_TRUE(root->is_bool());
root = JSONReader().ReadToValue("/* comment */\"sample string\"");
ASSERT_TRUE(root);
EXPECT_TRUE(root->is_string());
std::string value;
EXPECT_TRUE(root->GetAsString(&value));
EXPECT_EQ("sample string", value);
std::unique_ptr<ListValue> list =
ListValue::From(JSONReader().ReadToValue("[1, /* comment, 2 ] */ \n 3]"));
ASSERT_TRUE(list);
EXPECT_EQ(2u, list->GetSize());
int int_val = 0;
EXPECT_TRUE(list->GetInteger(0, &int_val));
EXPECT_EQ(1, int_val);
EXPECT_TRUE(list->GetInteger(1, &int_val));
EXPECT_EQ(3, int_val);
list = ListValue::From(JSONReader().ReadToValue("[1, /*a*/2, 3]"));
ASSERT_TRUE(list);
EXPECT_EQ(3u, list->GetSize());
root = JSONReader().ReadToValue("/* comment **/42");
ASSERT_TRUE(root);
EXPECT_TRUE(root->is_int());
EXPECT_TRUE(root->GetAsInteger(&int_val));
EXPECT_EQ(42, int_val);
root = JSONReader().ReadToValue(
"/* comment **/\n"
"// */ 43\n"
"44");
ASSERT_TRUE(root);
EXPECT_TRUE(root->is_int());
EXPECT_TRUE(root->GetAsInteger(&int_val));
EXPECT_EQ(44, int_val);
}
TEST(JSONReaderTest, Ints) {
std::unique_ptr<Value> root = JSONReader().ReadToValue("43");
ASSERT_TRUE(root);
EXPECT_TRUE(root->is_int());
int int_val = 0;
EXPECT_TRUE(root->GetAsInteger(&int_val));
EXPECT_EQ(43, int_val);
}
TEST(JSONReaderTest, NonDecimalNumbers) {
// According to RFC4627, oct, hex, and leading zeros are invalid JSON.
EXPECT_FALSE(JSONReader().ReadToValue("043"));
EXPECT_FALSE(JSONReader().ReadToValue("0x43"));
EXPECT_FALSE(JSONReader().ReadToValue("00"));
}
TEST(JSONReaderTest, NumberZero) {
// Test 0 (which needs to be special cased because of the leading zero
// clause).
std::unique_ptr<Value> root = JSONReader().ReadToValue("0");
ASSERT_TRUE(root);
EXPECT_TRUE(root->is_int());
int int_val = 1;
EXPECT_TRUE(root->GetAsInteger(&int_val));
EXPECT_EQ(0, int_val);
}
TEST(JSONReaderTest, LargeIntPromotion) {
// Numbers that overflow ints should succeed, being internally promoted to
// storage as doubles
std::unique_ptr<Value> root = JSONReader().ReadToValue("2147483648");
ASSERT_TRUE(root);
double double_val;
EXPECT_TRUE(root->is_double());
double_val = 0.0;
EXPECT_TRUE(root->GetAsDouble(&double_val));
EXPECT_DOUBLE_EQ(2147483648.0, double_val);
root = JSONReader().ReadToValue("-2147483649");
ASSERT_TRUE(root);
EXPECT_TRUE(root->is_double());
double_val = 0.0;
EXPECT_TRUE(root->GetAsDouble(&double_val));
EXPECT_DOUBLE_EQ(-2147483649.0, double_val);
}
TEST(JSONReaderTest, Doubles) {
std::unique_ptr<Value> root = JSONReader().ReadToValue("43.1");
ASSERT_TRUE(root);
EXPECT_TRUE(root->is_double());
double double_val = 0.0;
EXPECT_TRUE(root->GetAsDouble(&double_val));
EXPECT_DOUBLE_EQ(43.1, double_val);
root = JSONReader().ReadToValue("4.3e-1");
ASSERT_TRUE(root);
EXPECT_TRUE(root->is_double());
double_val = 0.0;
EXPECT_TRUE(root->GetAsDouble(&double_val));
EXPECT_DOUBLE_EQ(.43, double_val);
root = JSONReader().ReadToValue("2.1e0");
ASSERT_TRUE(root);
EXPECT_TRUE(root->is_double());
double_val = 0.0;
EXPECT_TRUE(root->GetAsDouble(&double_val));
EXPECT_DOUBLE_EQ(2.1, double_val);
root = JSONReader().ReadToValue("2.1e+0001");
ASSERT_TRUE(root);
EXPECT_TRUE(root->is_double());
double_val = 0.0;
EXPECT_TRUE(root->GetAsDouble(&double_val));
EXPECT_DOUBLE_EQ(21.0, double_val);
root = JSONReader().ReadToValue("0.01");
ASSERT_TRUE(root);
EXPECT_TRUE(root->is_double());
double_val = 0.0;
EXPECT_TRUE(root->GetAsDouble(&double_val));
EXPECT_DOUBLE_EQ(0.01, double_val);
root = JSONReader().ReadToValue("1.00");
ASSERT_TRUE(root);
EXPECT_TRUE(root->is_double());
double_val = 0.0;
EXPECT_TRUE(root->GetAsDouble(&double_val));
EXPECT_DOUBLE_EQ(1.0, double_val);
}
TEST(JSONReaderTest, FractionalNumbers) {
// Fractional parts must have a digit before and after the decimal point.
EXPECT_FALSE(JSONReader().ReadToValue("1."));
EXPECT_FALSE(JSONReader().ReadToValue(".1"));
EXPECT_FALSE(JSONReader().ReadToValue("1.e10"));
}
TEST(JSONReaderTest, ExponentialNumbers) {
// Exponent must have a digit following the 'e'.
EXPECT_FALSE(JSONReader().ReadToValue("1e"));
EXPECT_FALSE(JSONReader().ReadToValue("1E"));
EXPECT_FALSE(JSONReader().ReadToValue("1e1."));
EXPECT_FALSE(JSONReader().ReadToValue("1e1.0"));
}
TEST(JSONReaderTest, InvalidNAN) {
EXPECT_FALSE(JSONReader().ReadToValue("1e1000"));
EXPECT_FALSE(JSONReader().ReadToValue("-1e1000"));
EXPECT_FALSE(JSONReader().ReadToValue("NaN"));
EXPECT_FALSE(JSONReader().ReadToValue("nan"));
EXPECT_FALSE(JSONReader().ReadToValue("inf"));
}
TEST(JSONReaderTest, InvalidNumbers) {
EXPECT_FALSE(JSONReader().ReadToValue("4.3.1"));
EXPECT_FALSE(JSONReader().ReadToValue("4e3.1"));
EXPECT_FALSE(JSONReader().ReadToValue("4.a"));
}
TEST(JSONReader, SimpleString) {
std::unique_ptr<Value> root = JSONReader().ReadToValue("\"hello world\"");
ASSERT_TRUE(root);
EXPECT_TRUE(root->is_string());
std::string str_val;
EXPECT_TRUE(root->GetAsString(&str_val));
EXPECT_EQ("hello world", str_val);
}
TEST(JSONReaderTest, EmptyString) {
std::unique_ptr<Value> root = JSONReader().ReadToValue("\"\"");
ASSERT_TRUE(root);
EXPECT_TRUE(root->is_string());
std::string str_val;
EXPECT_TRUE(root->GetAsString(&str_val));
EXPECT_EQ("", str_val);
}
TEST(JSONReaderTest, BasicStringEscapes) {
std::unique_ptr<Value> root =
JSONReader().ReadToValue("\" \\\"\\\\\\/\\b\\f\\n\\r\\t\\v\"");
ASSERT_TRUE(root);
EXPECT_TRUE(root->is_string());
std::string str_val;
EXPECT_TRUE(root->GetAsString(&str_val));
EXPECT_EQ(" \"\\/\b\f\n\r\t\v", str_val);
}
TEST(JSONReaderTest, UnicodeEscapes) {
// Test hex and unicode escapes including the null character.
std::unique_ptr<Value> root =
JSONReader().ReadToValue("\"\\x41\\x00\\u1234\\u0000\"");
ASSERT_TRUE(root);
EXPECT_TRUE(root->is_string());
std::string str_val;
EXPECT_TRUE(root->GetAsString(&str_val));
EXPECT_EQ(std::wstring(L"A\0\x1234\0", 4), UTF8ToWide(str_val));
}
TEST(JSONReaderTest, InvalidStrings) {
EXPECT_FALSE(JSONReader().ReadToValue("\"no closing quote"));
EXPECT_FALSE(JSONReader().ReadToValue("\"\\z invalid escape char\""));
EXPECT_FALSE(JSONReader().ReadToValue("\"\\xAQ invalid hex code\""));
EXPECT_FALSE(JSONReader().ReadToValue("not enough hex chars\\x1\""));
EXPECT_FALSE(JSONReader().ReadToValue("\"not enough escape chars\\u123\""));
EXPECT_FALSE(
JSONReader().ReadToValue("\"extra backslash at end of input\\\""));
}
TEST(JSONReaderTest, BasicArray) {
std::unique_ptr<ListValue> list =
ListValue::From(JSONReader::Read("[true, false, null]"));
ASSERT_TRUE(list);
EXPECT_EQ(3U, list->GetSize());
// Test with trailing comma. Should be parsed the same as above.
std::unique_ptr<Value> root2 =
JSONReader::Read("[true, false, null, ]", JSON_ALLOW_TRAILING_COMMAS);
EXPECT_TRUE(list->Equals(root2.get()));
}
TEST(JSONReaderTest, EmptyArray) {
std::unique_ptr<ListValue> list = ListValue::From(JSONReader::Read("[]"));
ASSERT_TRUE(list);
EXPECT_EQ(0U, list->GetSize());
}
TEST(JSONReaderTest, NestedArrays) {
std::unique_ptr<ListValue> list = ListValue::From(
JSONReader::Read("[[true], [], [false, [], [null]], null]"));
ASSERT_TRUE(list);
EXPECT_EQ(4U, list->GetSize());
// Lots of trailing commas.
std::unique_ptr<Value> root2 =
JSONReader::Read("[[true], [], [false, [], [null, ] , ], null,]",
JSON_ALLOW_TRAILING_COMMAS);
EXPECT_TRUE(list->Equals(root2.get()));
}
TEST(JSONReaderTest, InvalidArrays) {
// Missing close brace.
EXPECT_FALSE(JSONReader::Read("[[true], [], [false, [], [null]], null"));
// Too many commas.
EXPECT_FALSE(JSONReader::Read("[true,, null]"));
EXPECT_FALSE(JSONReader::Read("[true,, null]", JSON_ALLOW_TRAILING_COMMAS));
// No commas.
EXPECT_FALSE(JSONReader::Read("[true null]"));
// Trailing comma.
EXPECT_FALSE(JSONReader::Read("[true,]"));
}
TEST(JSONReaderTest, ArrayTrailingComma) {
// Valid if we set |allow_trailing_comma| to true.
std::unique_ptr<ListValue> list =
ListValue::From(JSONReader::Read("[true,]", JSON_ALLOW_TRAILING_COMMAS));
ASSERT_TRUE(list);
EXPECT_EQ(1U, list->GetSize());
Value* tmp_value = nullptr;
ASSERT_TRUE(list->Get(0, &tmp_value));
EXPECT_TRUE(tmp_value->is_bool());
bool bool_value = false;
EXPECT_TRUE(tmp_value->GetAsBoolean(&bool_value));
EXPECT_TRUE(bool_value);
}
TEST(JSONReaderTest, ArrayTrailingCommaNoEmptyElements) {
// Don't allow empty elements, even if |allow_trailing_comma| is
// true.
EXPECT_FALSE(JSONReader::Read("[,]", JSON_ALLOW_TRAILING_COMMAS));
EXPECT_FALSE(JSONReader::Read("[true,,]", JSON_ALLOW_TRAILING_COMMAS));
EXPECT_FALSE(JSONReader::Read("[,true,]", JSON_ALLOW_TRAILING_COMMAS));
EXPECT_FALSE(JSONReader::Read("[true,,false]", JSON_ALLOW_TRAILING_COMMAS));
}
TEST(JSONReaderTest, EmptyDictionary) {
std::unique_ptr<DictionaryValue> dict_val =
DictionaryValue::From(JSONReader::Read("{}"));
ASSERT_TRUE(dict_val);
}
TEST(JSONReaderTest, CompleteDictionary) {
auto dict_val = DictionaryValue::From(JSONReader::Read(
"{\"number\":9.87654321, \"null\":null , \"\\x53\" : \"str\" }"));
ASSERT_TRUE(dict_val);
double double_val = 0.0;
EXPECT_TRUE(dict_val->GetDouble("number", &double_val));
EXPECT_DOUBLE_EQ(9.87654321, double_val);
Value* null_val = nullptr;
ASSERT_TRUE(dict_val->Get("null", &null_val));
EXPECT_TRUE(null_val->is_none());
std::string str_val;
EXPECT_TRUE(dict_val->GetString("S", &str_val));
EXPECT_EQ("str", str_val);
std::unique_ptr<Value> root2 = JSONReader::Read(
"{\"number\":9.87654321, \"null\":null , \"\\x53\" : \"str\", }",
JSON_ALLOW_TRAILING_COMMAS);
ASSERT_TRUE(root2);
EXPECT_TRUE(dict_val->Equals(root2.get()));
// Test newline equivalence.
root2 = JSONReader::Read(
"{\n"
" \"number\":9.87654321,\n"
" \"null\":null,\n"
" \"\\x53\":\"str\",\n"
"}\n",
JSON_ALLOW_TRAILING_COMMAS);
ASSERT_TRUE(root2);
EXPECT_TRUE(dict_val->Equals(root2.get()));
root2 = JSONReader::Read(
"{\r\n"
" \"number\":9.87654321,\r\n"
" \"null\":null,\r\n"
" \"\\x53\":\"str\",\r\n"
"}\r\n",
JSON_ALLOW_TRAILING_COMMAS);
ASSERT_TRUE(root2);
EXPECT_TRUE(dict_val->Equals(root2.get()));
}
TEST(JSONReaderTest, NestedDictionaries) {
std::unique_ptr<DictionaryValue> dict_val =
DictionaryValue::From(JSONReader::Read(
"{\"inner\":{\"array\":[true]},\"false\":false,\"d\":{}}"));
ASSERT_TRUE(dict_val);
DictionaryValue* inner_dict = nullptr;
ASSERT_TRUE(dict_val->GetDictionary("inner", &inner_dict));
ListValue* inner_array = nullptr;
ASSERT_TRUE(inner_dict->GetList("array", &inner_array));
EXPECT_EQ(1U, inner_array->GetSize());
bool bool_value = true;
EXPECT_TRUE(dict_val->GetBoolean("false", &bool_value));
EXPECT_FALSE(bool_value);
inner_dict = nullptr;
EXPECT_TRUE(dict_val->GetDictionary("d", &inner_dict));
std::unique_ptr<Value> root2 = JSONReader::Read(
"{\"inner\": {\"array\":[true] , },\"false\":false,\"d\":{},}",
JSON_ALLOW_TRAILING_COMMAS);
EXPECT_TRUE(dict_val->Equals(root2.get()));
}
TEST(JSONReaderTest, DictionaryKeysWithPeriods) {
std::unique_ptr<DictionaryValue> dict_val = DictionaryValue::From(
JSONReader::Read("{\"a.b\":3,\"c\":2,\"d.e.f\":{\"g.h.i.j\":1}}"));
ASSERT_TRUE(dict_val);
int integer_value = 0;
EXPECT_TRUE(dict_val->GetIntegerWithoutPathExpansion("a.b", &integer_value));
EXPECT_EQ(3, integer_value);
EXPECT_TRUE(dict_val->GetIntegerWithoutPathExpansion("c", &integer_value));
EXPECT_EQ(2, integer_value);
DictionaryValue* inner_dict = nullptr;
ASSERT_TRUE(
dict_val->GetDictionaryWithoutPathExpansion("d.e.f", &inner_dict));
EXPECT_EQ(1U, inner_dict->size());
EXPECT_TRUE(
inner_dict->GetIntegerWithoutPathExpansion("g.h.i.j", &integer_value));
EXPECT_EQ(1, integer_value);
dict_val =
DictionaryValue::From(JSONReader::Read("{\"a\":{\"b\":2},\"a.b\":1}"));
ASSERT_TRUE(dict_val);
EXPECT_TRUE(dict_val->GetInteger("a.b", &integer_value));
EXPECT_EQ(2, integer_value);
EXPECT_TRUE(dict_val->GetIntegerWithoutPathExpansion("a.b", &integer_value));
EXPECT_EQ(1, integer_value);
}
TEST(JSONReaderTest, InvalidDictionaries) {
// No closing brace.
EXPECT_FALSE(JSONReader::Read("{\"a\": true"));
// Keys must be quoted strings.
EXPECT_FALSE(JSONReader::Read("{foo:true}"));
EXPECT_FALSE(JSONReader::Read("{1234: false}"));
EXPECT_FALSE(JSONReader::Read("{:false}"));
// Trailing comma.
EXPECT_FALSE(JSONReader::Read("{\"a\":true,}"));
// Too many commas.
EXPECT_FALSE(JSONReader::Read("{\"a\":true,,\"b\":false}"));
EXPECT_FALSE(JSONReader::Read("{\"a\":true,,\"b\":false}",
JSON_ALLOW_TRAILING_COMMAS));
// No separator.
EXPECT_FALSE(JSONReader::Read("{\"a\" \"b\"}"));
// Lone comma.
EXPECT_FALSE(JSONReader::Read("{,}"));
EXPECT_FALSE(JSONReader::Read("{,}", JSON_ALLOW_TRAILING_COMMAS));
EXPECT_FALSE(JSONReader::Read("{\"a\":true,,}", JSON_ALLOW_TRAILING_COMMAS));
EXPECT_FALSE(JSONReader::Read("{,\"a\":true}", JSON_ALLOW_TRAILING_COMMAS));
EXPECT_FALSE(JSONReader::Read("{\"a\":true,,\"b\":false}",
JSON_ALLOW_TRAILING_COMMAS));
}
TEST(JSONReaderTest, StackOverflow) {
std::string evil(1000000, '[');
evil.append(std::string(1000000, ']'));
EXPECT_FALSE(JSONReader::Read(evil));
// A few thousand adjacent lists is fine.
std::string not_evil("[");
not_evil.reserve(15010);
for (int i = 0; i < 5000; ++i)
not_evil.append("[],");
not_evil.append("[]]");
std::unique_ptr<ListValue> list = ListValue::From(JSONReader::Read(not_evil));
ASSERT_TRUE(list);
EXPECT_EQ(5001U, list->GetSize());
}
TEST(JSONReaderTest, UTF8Input) {
std::unique_ptr<Value> root =
JSONReader().ReadToValue("\"\xe7\xbd\x91\xe9\xa1\xb5\"");
ASSERT_TRUE(root);
EXPECT_TRUE(root->is_string());
std::string str_val;
EXPECT_TRUE(root->GetAsString(&str_val));
EXPECT_EQ(L"\x7f51\x9875", UTF8ToWide(str_val));
std::unique_ptr<DictionaryValue> dict_val =
DictionaryValue::From(JSONReader().ReadToValue(
"{\"path\": \"/tmp/\xc3\xa0\xc3\xa8\xc3\xb2.png\"}"));
ASSERT_TRUE(dict_val);
EXPECT_TRUE(dict_val->GetString("path", &str_val));
EXPECT_EQ("/tmp/\xC3\xA0\xC3\xA8\xC3\xB2.png", str_val);
}
TEST(JSONReaderTest, InvalidUTF8Input) {
EXPECT_FALSE(JSONReader().ReadToValue("\"345\xb0\xa1\xb0\xa2\""));
EXPECT_FALSE(JSONReader().ReadToValue("\"123\xc0\x81\""));
EXPECT_FALSE(JSONReader().ReadToValue("\"abc\xc0\xae\""));
}
TEST(JSONReaderTest, UTF16Escapes) {
std::unique_ptr<Value> root = JSONReader().ReadToValue("\"\\u20ac3,14\"");
ASSERT_TRUE(root);
EXPECT_TRUE(root->is_string());
std::string str_val;
EXPECT_TRUE(root->GetAsString(&str_val));
EXPECT_EQ(
"\xe2\x82\xac"
"3,14",
str_val);
root = JSONReader().ReadToValue("\"\\ud83d\\udca9\\ud83d\\udc6c\"");
ASSERT_TRUE(root);
EXPECT_TRUE(root->is_string());
str_val.clear();
EXPECT_TRUE(root->GetAsString(&str_val));
EXPECT_EQ("\xf0\x9f\x92\xa9\xf0\x9f\x91\xac", str_val);
}
TEST(JSONReaderTest, InvalidUTF16Escapes) {
const char* const cases[] = {
"\"\\u123\"", // Invalid scalar.
"\"\\ud83d\"", // Invalid scalar.
"\"\\u$%@!\"", // Invalid scalar.
"\"\\uzz89\"", // Invalid scalar.
"\"\\ud83d\\udca\"", // Invalid lower surrogate.
"\"\\ud83d\\ud83d\"", // Invalid lower surrogate.
"\"\\ud83d\\uaaaZ\"" // Invalid lower surrogate.
"\"\\ud83foo\"", // No lower surrogate.
"\"\\ud83d\\foo\"" // No lower surrogate.
"\"\\ud83\\foo\"" // Invalid upper surrogate.
"\"\\ud83d\\u1\"" // No lower surrogate.
"\"\\ud83\\u1\"" // Invalid upper surrogate.
};
std::unique_ptr<Value> root;
for (size_t i = 0; i < arraysize(cases); ++i) {
root = JSONReader().ReadToValue(cases[i]);
EXPECT_FALSE(root) << cases[i];
}
}
TEST(JSONReaderTest, LiteralRoots) {
std::unique_ptr<Value> root = JSONReader::Read("null");
ASSERT_TRUE(root);
EXPECT_TRUE(root->is_none());
root = JSONReader::Read("true");
ASSERT_TRUE(root);
bool bool_value;
EXPECT_TRUE(root->GetAsBoolean(&bool_value));
EXPECT_TRUE(bool_value);
root = JSONReader::Read("10");
ASSERT_TRUE(root);
int integer_value;
EXPECT_TRUE(root->GetAsInteger(&integer_value));
EXPECT_EQ(10, integer_value);
root = JSONReader::Read("\"root\"");
ASSERT_TRUE(root);
std::string str_val;
EXPECT_TRUE(root->GetAsString(&str_val));
EXPECT_EQ("root", str_val);
}
TEST(JSONReaderTest, ReadFromFile) {
FilePath path;
ASSERT_TRUE(PathService::Get(base::DIR_TEST_DATA, &path));
#if defined(STARBOARD)
path = path.Append(FILE_PATH_LITERAL("base"));
path = path.Append(FILE_PATH_LITERAL("test"));
path = path.Append(FILE_PATH_LITERAL("data"));
#endif
path = path.AppendASCII("json");
ASSERT_TRUE(base::PathExists(path));
std::string input;
ASSERT_TRUE(ReadFileToString(path.AppendASCII("bom_feff.json"), &input));
JSONReader reader;
std::unique_ptr<Value> root(reader.ReadToValue(input));
ASSERT_TRUE(root) << reader.GetErrorMessage();
EXPECT_TRUE(root->is_dict());
}
// Tests that the root of a JSON object can be deleted safely while its
// children outlive it.
TEST(JSONReaderTest, StringOptimizations) {
std::unique_ptr<Value> dict_literal_0;
std::unique_ptr<Value> dict_literal_1;
std::unique_ptr<Value> dict_string_0;
std::unique_ptr<Value> dict_string_1;
std::unique_ptr<Value> list_value_0;
std::unique_ptr<Value> list_value_1;
{
std::unique_ptr<Value> root = JSONReader::Read(
"{"
" \"test\": {"
" \"foo\": true,"
" \"bar\": 3.14,"
" \"baz\": \"bat\","
" \"moo\": \"cow\""
" },"
" \"list\": ["
" \"a\","
" \"b\""
" ]"
"}",
JSON_PARSE_RFC);
ASSERT_TRUE(root);
DictionaryValue* root_dict = nullptr;
ASSERT_TRUE(root->GetAsDictionary(&root_dict));
DictionaryValue* dict = nullptr;
ListValue* list = nullptr;
ASSERT_TRUE(root_dict->GetDictionary("test", &dict));
ASSERT_TRUE(root_dict->GetList("list", &list));
ASSERT_TRUE(dict->Remove("foo", &dict_literal_0));
ASSERT_TRUE(dict->Remove("bar", &dict_literal_1));
ASSERT_TRUE(dict->Remove("baz", &dict_string_0));
ASSERT_TRUE(dict->Remove("moo", &dict_string_1));
ASSERT_EQ(2u, list->GetSize());
ASSERT_TRUE(list->Remove(0, &list_value_0));
ASSERT_TRUE(list->Remove(0, &list_value_1));
}
bool b = false;
double d = 0;
std::string s;
EXPECT_TRUE(dict_literal_0->GetAsBoolean(&b));
EXPECT_TRUE(b);
EXPECT_TRUE(dict_literal_1->GetAsDouble(&d));
EXPECT_EQ(3.14, d);
EXPECT_TRUE(dict_string_0->GetAsString(&s));
EXPECT_EQ("bat", s);
EXPECT_TRUE(dict_string_1->GetAsString(&s));
EXPECT_EQ("cow", s);
EXPECT_TRUE(list_value_0->GetAsString(&s));
EXPECT_EQ("a", s);
EXPECT_TRUE(list_value_1->GetAsString(&s));
EXPECT_EQ("b", s);
}
// A smattering of invalid JSON designed to test specific portions of the
// parser implementation against buffer overflow. Best run with DCHECKs so
// that the one in NextChar fires.
TEST(JSONReaderTest, InvalidSanity) {
const char* const kInvalidJson[] = {
"/* test *", "{\"foo\"", "{\"foo\":", " [", "\"\\u123g\"", "{\n\"eh:\n}",
};
for (size_t i = 0; i < arraysize(kInvalidJson); ++i) {
JSONReader reader;
LOG(INFO) << "Sanity test " << i << ": <" << kInvalidJson[i] << ">";
EXPECT_FALSE(reader.ReadToValue(kInvalidJson[i]));
EXPECT_NE(JSONReader::JSON_NO_ERROR, reader.error_code());
EXPECT_NE("", reader.GetErrorMessage());
}
}
TEST(JSONReaderTest, IllegalTrailingNull) {
const char json[] = { '"', 'n', 'u', 'l', 'l', '"', '\0' };
std::string json_string(json, sizeof(json));
JSONReader reader;
EXPECT_FALSE(reader.ReadToValue(json_string));
EXPECT_EQ(JSONReader::JSON_UNEXPECTED_DATA_AFTER_ROOT, reader.error_code());
}
TEST(JSONReaderTest, MaxNesting) {
std::string json(R"({"outer": { "inner": {"foo": true}}})");
std::unique_ptr<Value> root;
root = JSONReader::Read(json, JSON_PARSE_RFC, 3);
ASSERT_FALSE(root);
root = JSONReader::Read(json, JSON_PARSE_RFC, 4);
ASSERT_TRUE(root);
}
} // namespace base