blob: 7f47b8e62f3c2bc8b26b7ddaaae43675bd724b61 [file] [log] [blame]
// Copyright (c) 2006-2008 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 "testing/gtest/include/gtest/gtest.h"
#include "base/json_reader.h"
#include "base/scoped_ptr.h"
#include "base/values.h"
#include "build/build_config.h"
TEST(JSONReaderTest, Reading) {
// some whitespace checking
scoped_ptr<Value> root;
root.reset(JSONReader().JsonToValue(" null ", false, false));
ASSERT_TRUE(root.get());
ASSERT_TRUE(root->IsType(Value::TYPE_NULL));
// Invalid JSON string
root.reset(JSONReader().JsonToValue("nu", false, false));
ASSERT_FALSE(root.get());
// Simple bool
root.reset(JSONReader().JsonToValue("true ", false, false));
ASSERT_TRUE(root.get());
ASSERT_TRUE(root->IsType(Value::TYPE_BOOLEAN));
// Embedded comment
root.reset(JSONReader().JsonToValue("/* comment */null", false, false));
ASSERT_TRUE(root.get());
ASSERT_TRUE(root->IsType(Value::TYPE_NULL));
root.reset(JSONReader().JsonToValue("40 /* comment */", false, false));
ASSERT_TRUE(root.get());
ASSERT_TRUE(root->IsType(Value::TYPE_INTEGER));
root.reset(JSONReader().JsonToValue("true // comment", false, false));
ASSERT_TRUE(root.get());
ASSERT_TRUE(root->IsType(Value::TYPE_BOOLEAN));
root.reset(JSONReader().JsonToValue("/* comment */\"sample string\"",
false, false));
ASSERT_TRUE(root.get());
ASSERT_TRUE(root->IsType(Value::TYPE_STRING));
std::string value;
ASSERT_TRUE(root->GetAsString(&value));
ASSERT_EQ("sample string", value);
// Test number formats
root.reset(JSONReader().JsonToValue("43", false, false));
ASSERT_TRUE(root.get());
ASSERT_TRUE(root->IsType(Value::TYPE_INTEGER));
int int_val = 0;
ASSERT_TRUE(root->GetAsInteger(&int_val));
ASSERT_EQ(43, int_val);
// According to RFC4627, oct, hex, and leading zeros are invalid JSON.
root.reset(JSONReader().JsonToValue("043", false, false));
ASSERT_FALSE(root.get());
root.reset(JSONReader().JsonToValue("0x43", false, false));
ASSERT_FALSE(root.get());
root.reset(JSONReader().JsonToValue("00", false, false));
ASSERT_FALSE(root.get());
// Test 0 (which needs to be special cased because of the leading zero
// clause).
root.reset(JSONReader().JsonToValue("0", false, false));
ASSERT_TRUE(root.get());
ASSERT_TRUE(root->IsType(Value::TYPE_INTEGER));
int_val = 1;
ASSERT_TRUE(root->GetAsInteger(&int_val));
ASSERT_EQ(0, int_val);
// Numbers that overflow ints should succeed, being internally promoted to
// storage as doubles
root.reset(JSONReader().JsonToValue("2147483648", false, false));
ASSERT_TRUE(root.get());
double real_val;
ASSERT_TRUE(root->IsType(Value::TYPE_REAL));
real_val = 0.0;
ASSERT_TRUE(root->GetAsReal(&real_val));
ASSERT_DOUBLE_EQ(2147483648.0, real_val);
root.reset(JSONReader().JsonToValue("-2147483649", false, false));
ASSERT_TRUE(root.get());
ASSERT_TRUE(root->IsType(Value::TYPE_REAL));
real_val = 0.0;
ASSERT_TRUE(root->GetAsReal(&real_val));
ASSERT_DOUBLE_EQ(-2147483649.0, real_val);
// Parse a double
root.reset(JSONReader().JsonToValue("43.1", false, false));
ASSERT_TRUE(root.get());
ASSERT_TRUE(root->IsType(Value::TYPE_REAL));
real_val = 0.0;
ASSERT_TRUE(root->GetAsReal(&real_val));
ASSERT_DOUBLE_EQ(43.1, real_val);
root.reset(JSONReader().JsonToValue("4.3e-1", false, false));
ASSERT_TRUE(root.get());
ASSERT_TRUE(root->IsType(Value::TYPE_REAL));
real_val = 0.0;
ASSERT_TRUE(root->GetAsReal(&real_val));
ASSERT_DOUBLE_EQ(.43, real_val);
root.reset(JSONReader().JsonToValue("2.1e0", false, false));
ASSERT_TRUE(root.get());
ASSERT_TRUE(root->IsType(Value::TYPE_REAL));
real_val = 0.0;
ASSERT_TRUE(root->GetAsReal(&real_val));
ASSERT_DOUBLE_EQ(2.1, real_val);
root.reset(JSONReader().JsonToValue("2.1e+0001", false, false));
ASSERT_TRUE(root.get());
ASSERT_TRUE(root->IsType(Value::TYPE_REAL));
real_val = 0.0;
ASSERT_TRUE(root->GetAsReal(&real_val));
ASSERT_DOUBLE_EQ(21.0, real_val);
root.reset(JSONReader().JsonToValue("0.01", false, false));
ASSERT_TRUE(root.get());
ASSERT_TRUE(root->IsType(Value::TYPE_REAL));
real_val = 0.0;
ASSERT_TRUE(root->GetAsReal(&real_val));
ASSERT_DOUBLE_EQ(0.01, real_val);
root.reset(JSONReader().JsonToValue("1.00", false, false));
ASSERT_TRUE(root.get());
ASSERT_TRUE(root->IsType(Value::TYPE_REAL));
real_val = 0.0;
ASSERT_TRUE(root->GetAsReal(&real_val));
ASSERT_DOUBLE_EQ(1.0, real_val);
// Fractional parts must have a digit before and after the decimal point.
root.reset(JSONReader().JsonToValue("1.", false, false));
ASSERT_FALSE(root.get());
root.reset(JSONReader().JsonToValue(".1", false, false));
ASSERT_FALSE(root.get());
root.reset(JSONReader().JsonToValue("1.e10", false, false));
ASSERT_FALSE(root.get());
// Exponent must have a digit following the 'e'.
root.reset(JSONReader().JsonToValue("1e", false, false));
ASSERT_FALSE(root.get());
root.reset(JSONReader().JsonToValue("1E", false, false));
ASSERT_FALSE(root.get());
root.reset(JSONReader().JsonToValue("1e1.", false, false));
ASSERT_FALSE(root.get());
root.reset(JSONReader().JsonToValue("1e1.0", false, false));
ASSERT_FALSE(root.get());
// INF/-INF/NaN are not valid
root.reset(JSONReader().JsonToValue("1e1000", false, false));
ASSERT_FALSE(root.get());
root.reset(JSONReader().JsonToValue("-1e1000", false, false));
ASSERT_FALSE(root.get());
root.reset(JSONReader().JsonToValue("NaN", false, false));
ASSERT_FALSE(root.get());
root.reset(JSONReader().JsonToValue("nan", false, false));
ASSERT_FALSE(root.get());
root.reset(JSONReader().JsonToValue("inf", false, false));
ASSERT_FALSE(root.get());
// Invalid number formats
root.reset(JSONReader().JsonToValue("4.3.1", false, false));
ASSERT_FALSE(root.get());
root.reset(JSONReader().JsonToValue("4e3.1", false, false));
ASSERT_FALSE(root.get());
// Test string parser
root.reset(JSONReader().JsonToValue("\"hello world\"", false, false));
ASSERT_TRUE(root.get());
ASSERT_TRUE(root->IsType(Value::TYPE_STRING));
std::wstring str_val;
ASSERT_TRUE(root->GetAsString(&str_val));
ASSERT_EQ(L"hello world", str_val);
// Empty string
root.reset(JSONReader().JsonToValue("\"\"", false, false));
ASSERT_TRUE(root.get());
ASSERT_TRUE(root->IsType(Value::TYPE_STRING));
str_val.clear();
ASSERT_TRUE(root->GetAsString(&str_val));
ASSERT_EQ(L"", str_val);
// Test basic string escapes
root.reset(JSONReader().JsonToValue("\" \\\"\\\\\\/\\b\\f\\n\\r\\t\\v\"",
false, false));
ASSERT_TRUE(root.get());
ASSERT_TRUE(root->IsType(Value::TYPE_STRING));
str_val.clear();
ASSERT_TRUE(root->GetAsString(&str_val));
ASSERT_EQ(L" \"\\/\b\f\n\r\t\v", str_val);
// Test hex and unicode escapes including the null character.
root.reset(JSONReader().JsonToValue("\"\\x41\\x00\\u1234\"", false,
false));
ASSERT_TRUE(root.get());
ASSERT_TRUE(root->IsType(Value::TYPE_STRING));
str_val.clear();
ASSERT_TRUE(root->GetAsString(&str_val));
ASSERT_EQ(std::wstring(L"A\0\x1234", 3), str_val);
// Test invalid strings
root.reset(JSONReader().JsonToValue("\"no closing quote", false, false));
ASSERT_FALSE(root.get());
root.reset(JSONReader().JsonToValue("\"\\z invalid escape char\"", false,
false));
ASSERT_FALSE(root.get());
root.reset(JSONReader().JsonToValue("\"\\xAQ invalid hex code\"", false,
false));
ASSERT_FALSE(root.get());
root.reset(JSONReader().JsonToValue("not enough hex chars\\x1\"", false,
false));
ASSERT_FALSE(root.get());
root.reset(JSONReader().JsonToValue("\"not enough escape chars\\u123\"",
false, false));
ASSERT_FALSE(root.get());
root.reset(JSONReader().JsonToValue("\"extra backslash at end of input\\\"",
false, false));
ASSERT_FALSE(root.get());
// Basic array
root.reset(JSONReader::Read("[true, false, null]", false));
ASSERT_TRUE(root.get());
ASSERT_TRUE(root->IsType(Value::TYPE_LIST));
ListValue* list = static_cast<ListValue*>(root.get());
ASSERT_EQ(3U, list->GetSize());
// Test with trailing comma. Should be parsed the same as above.
scoped_ptr<Value> root2;
root2.reset(JSONReader::Read("[true, false, null, ]", true));
EXPECT_TRUE(root->Equals(root2.get()));
// Empty array
root.reset(JSONReader::Read("[]", false));
ASSERT_TRUE(root.get());
ASSERT_TRUE(root->IsType(Value::TYPE_LIST));
list = static_cast<ListValue*>(root.get());
ASSERT_EQ(0U, list->GetSize());
// Nested arrays
root.reset(JSONReader::Read("[[true], [], [false, [], [null]], null]",
false));
ASSERT_TRUE(root.get());
ASSERT_TRUE(root->IsType(Value::TYPE_LIST));
list = static_cast<ListValue*>(root.get());
ASSERT_EQ(4U, list->GetSize());
// Lots of trailing commas.
root2.reset(JSONReader::Read("[[true], [], [false, [], [null, ] , ], null,]",
true));
EXPECT_TRUE(root->Equals(root2.get()));
// Invalid, missing close brace.
root.reset(JSONReader::Read("[[true], [], [false, [], [null]], null", false));
ASSERT_FALSE(root.get());
// Invalid, too many commas
root.reset(JSONReader::Read("[true,, null]", false));
ASSERT_FALSE(root.get());
root.reset(JSONReader::Read("[true,, null]", true));
ASSERT_FALSE(root.get());
// Invalid, no commas
root.reset(JSONReader::Read("[true null]", false));
ASSERT_FALSE(root.get());
// Invalid, trailing comma
root.reset(JSONReader::Read("[true,]", false));
ASSERT_FALSE(root.get());
// Valid if we set |allow_trailing_comma| to true.
root.reset(JSONReader::Read("[true,]", true));
ASSERT_TRUE(root.get());
ASSERT_TRUE(root->IsType(Value::TYPE_LIST));
list = static_cast<ListValue*>(root.get());
EXPECT_EQ(1U, list->GetSize());
Value* tmp_value = NULL;
ASSERT_TRUE(list->Get(0, &tmp_value));
EXPECT_TRUE(tmp_value->IsType(Value::TYPE_BOOLEAN));
bool bool_value = false;
ASSERT_TRUE(tmp_value->GetAsBoolean(&bool_value));
EXPECT_TRUE(bool_value);
// Don't allow empty elements, even if |allow_trailing_comma| is
// true.
root.reset(JSONReader::Read("[,]", true));
EXPECT_FALSE(root.get());
root.reset(JSONReader::Read("[true,,]", true));
EXPECT_FALSE(root.get());
root.reset(JSONReader::Read("[,true,]", true));
EXPECT_FALSE(root.get());
root.reset(JSONReader::Read("[true,,false]", true));
EXPECT_FALSE(root.get());
// Test objects
root.reset(JSONReader::Read("{}", false));
ASSERT_TRUE(root.get());
ASSERT_TRUE(root->IsType(Value::TYPE_DICTIONARY));
root.reset(JSONReader::Read(
"{\"number\":9.87654321, \"null\":null , \"\\x53\" : \"str\" }",
false));
ASSERT_TRUE(root.get());
ASSERT_TRUE(root->IsType(Value::TYPE_DICTIONARY));
DictionaryValue* dict_val = static_cast<DictionaryValue*>(root.get());
real_val = 0.0;
ASSERT_TRUE(dict_val->GetReal(L"number", &real_val));
ASSERT_DOUBLE_EQ(9.87654321, real_val);
Value* null_val = NULL;
ASSERT_TRUE(dict_val->Get(L"null", &null_val));
ASSERT_TRUE(null_val->IsType(Value::TYPE_NULL));
str_val.clear();
ASSERT_TRUE(dict_val->GetString(L"S", &str_val));
ASSERT_EQ(L"str", str_val);
root2.reset(JSONReader::Read(
"{\"number\":9.87654321, \"null\":null , \"\\x53\" : \"str\", }", true));
ASSERT_TRUE(root2.get());
EXPECT_TRUE(root->Equals(root2.get()));
// Test newline equivalence.
root2.reset(JSONReader::Read(
"{\n"
" \"number\":9.87654321,\n"
" \"null\":null,\n"
" \"\\x53\":\"str\",\n"
"}\n", true));
ASSERT_TRUE(root2.get());
EXPECT_TRUE(root->Equals(root2.get()));
root2.reset(JSONReader::Read(
"{\r\n"
" \"number\":9.87654321,\r\n"
" \"null\":null,\r\n"
" \"\\x53\":\"str\",\r\n"
"}\r\n", true));
ASSERT_TRUE(root2.get());
EXPECT_TRUE(root->Equals(root2.get()));
// Test nesting
root.reset(JSONReader::Read(
"{\"inner\":{\"array\":[true]},\"false\":false,\"d\":{}}", false));
ASSERT_TRUE(root.get());
ASSERT_TRUE(root->IsType(Value::TYPE_DICTIONARY));
dict_val = static_cast<DictionaryValue*>(root.get());
DictionaryValue* inner_dict = NULL;
ASSERT_TRUE(dict_val->GetDictionary(L"inner", &inner_dict));
ListValue* inner_array = NULL;
ASSERT_TRUE(inner_dict->GetList(L"array", &inner_array));
ASSERT_EQ(1U, inner_array->GetSize());
bool_value = true;
ASSERT_TRUE(dict_val->GetBoolean(L"false", &bool_value));
ASSERT_FALSE(bool_value);
inner_dict = NULL;
ASSERT_TRUE(dict_val->GetDictionary(L"d", &inner_dict));
root2.reset(JSONReader::Read(
"{\"inner\": {\"array\":[true] , },\"false\":false,\"d\":{},}", true));
EXPECT_TRUE(root->Equals(root2.get()));
// Invalid, no closing brace
root.reset(JSONReader::Read("{\"a\": true", false));
ASSERT_FALSE(root.get());
// Invalid, keys must be quoted
root.reset(JSONReader::Read("{foo:true}", false));
ASSERT_FALSE(root.get());
// Invalid, trailing comma
root.reset(JSONReader::Read("{\"a\":true,}", false));
ASSERT_FALSE(root.get());
// Invalid, too many commas
root.reset(JSONReader::Read("{\"a\":true,,\"b\":false}", false));
ASSERT_FALSE(root.get());
root.reset(JSONReader::Read("{\"a\":true,,\"b\":false}", true));
ASSERT_FALSE(root.get());
// Invalid, no separator
root.reset(JSONReader::Read("{\"a\" \"b\"}", false));
ASSERT_FALSE(root.get());
// Invalid, lone comma.
root.reset(JSONReader::Read("{,}", false));
ASSERT_FALSE(root.get());
root.reset(JSONReader::Read("{,}", true));
ASSERT_FALSE(root.get());
root.reset(JSONReader::Read("{\"a\":true,,}", true));
ASSERT_FALSE(root.get());
root.reset(JSONReader::Read("{,\"a\":true}", true));
ASSERT_FALSE(root.get());
root.reset(JSONReader::Read("{\"a\":true,,\"b\":false}", true));
ASSERT_FALSE(root.get());
// Test stack overflow
std::string evil(1000000, '[');
evil.append(std::string(1000000, ']'));
root.reset(JSONReader::Read(evil, false));
ASSERT_FALSE(root.get());
// 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("[]]");
root.reset(JSONReader::Read(not_evil, false));
ASSERT_TRUE(root.get());
ASSERT_TRUE(root->IsType(Value::TYPE_LIST));
list = static_cast<ListValue*>(root.get());
ASSERT_EQ(5001U, list->GetSize());
// Test utf8 encoded input
root.reset(JSONReader().JsonToValue("\"\xe7\xbd\x91\xe9\xa1\xb5\"",
false, false));
ASSERT_TRUE(root.get());
ASSERT_TRUE(root->IsType(Value::TYPE_STRING));
str_val.clear();
ASSERT_TRUE(root->GetAsString(&str_val));
ASSERT_EQ(L"\x7f51\x9875", str_val);
// Test invalid utf8 encoded input
root.reset(JSONReader().JsonToValue("\"345\xb0\xa1\xb0\xa2\"",
false, false));
ASSERT_FALSE(root.get());
root.reset(JSONReader().JsonToValue("\"123\xc0\x81\"",
false, false));
ASSERT_FALSE(root.get());
// Test invalid root objects.
root.reset(JSONReader::Read("null", false));
ASSERT_FALSE(root.get());
root.reset(JSONReader::Read("true", false));
ASSERT_FALSE(root.get());
root.reset(JSONReader::Read("10", false));
ASSERT_FALSE(root.get());
root.reset(JSONReader::Read("\"root\"", false));
ASSERT_FALSE(root.get());
}
TEST(JSONReaderTest, ErrorMessages) {
// Error strings should not be modified in case of success.
std::string error_message;
scoped_ptr<Value> root;
root.reset(JSONReader::ReadAndReturnError("[42]", false, &error_message));
EXPECT_TRUE(error_message.empty());
// Test line and column counting
const char* big_json = "[\n0,\n1,\n2,\n3,4,5,6 7,\n8,\n9\n]";
// error here --------------------------------^
root.reset(JSONReader::ReadAndReturnError(big_json, false, &error_message));
EXPECT_FALSE(root.get());
EXPECT_EQ(JSONReader::FormatErrorMessage(5, 9, JSONReader::kSyntaxError),
error_message);
// Test each of the error conditions
root.reset(JSONReader::ReadAndReturnError("{},{}", false, &error_message));
EXPECT_FALSE(root.get());
EXPECT_EQ(JSONReader::FormatErrorMessage(1, 3,
JSONReader::kUnexpectedDataAfterRoot), error_message);
std::string nested_json;
for (int i = 0; i < 101; ++i) {
nested_json.insert(nested_json.begin(), '[');
nested_json.append(1, ']');
}
root.reset(JSONReader::ReadAndReturnError(nested_json, false,
&error_message));
EXPECT_FALSE(root.get());
EXPECT_EQ(JSONReader::FormatErrorMessage(1, 101, JSONReader::kTooMuchNesting),
error_message);
root.reset(JSONReader::ReadAndReturnError("42", false, &error_message));
EXPECT_FALSE(root.get());
EXPECT_EQ(JSONReader::FormatErrorMessage(1, 1,
JSONReader::kBadRootElementType), error_message);
root.reset(JSONReader::ReadAndReturnError("[1,]", false, &error_message));
EXPECT_FALSE(root.get());
EXPECT_EQ(JSONReader::FormatErrorMessage(1, 4, JSONReader::kTrailingComma),
error_message);
root.reset(JSONReader::ReadAndReturnError("{foo:\"bar\"}", false,
&error_message));
EXPECT_FALSE(root.get());
EXPECT_EQ(JSONReader::FormatErrorMessage(1, 2,
JSONReader::kUnquotedDictionaryKey), error_message);
root.reset(JSONReader::ReadAndReturnError("{\"foo\":\"bar\",}", false,
&error_message));
EXPECT_FALSE(root.get());
EXPECT_EQ(JSONReader::FormatErrorMessage(1, 14, JSONReader::kTrailingComma),
error_message);
root.reset(JSONReader::ReadAndReturnError("[nu]", false, &error_message));
EXPECT_FALSE(root.get());
EXPECT_EQ(JSONReader::FormatErrorMessage(1, 2, JSONReader::kSyntaxError),
error_message);
root.reset(JSONReader::ReadAndReturnError("[\"xxx\\xq\"]", false,
&error_message));
EXPECT_FALSE(root.get());
EXPECT_EQ(JSONReader::FormatErrorMessage(1, 7, JSONReader::kInvalidEscape),
error_message);
root.reset(JSONReader::ReadAndReturnError("[\"xxx\\uq\"]", false,
&error_message));
EXPECT_FALSE(root.get());
EXPECT_EQ(JSONReader::FormatErrorMessage(1, 7, JSONReader::kInvalidEscape),
error_message);
root.reset(JSONReader::ReadAndReturnError("[\"xxx\\q\"]", false,
&error_message));
EXPECT_FALSE(root.get());
EXPECT_EQ(JSONReader::FormatErrorMessage(1, 7, JSONReader::kInvalidEscape),
error_message);
}