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JSONParserTest.cpp
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219 lines (186 loc) · 5.92 KB
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/*
* Copyright (c) Facebook, Inc. and its affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
#include "hermes/Parser/JSONParser.h"
#include "hermes/Support/JSONEmitter.h"
#include "gtest/gtest.h"
using namespace hermes;
using namespace hermes::parser;
namespace {
TEST(JSONParserTest, SmokeTest1) {
static const char json[] =
"{\n"
" '6': null,\n"
" '1': null,\n"
" '2': null,\n"
" '3': null,\n"
" '4': null,\n"
" '5': null\n"
"}";
JSLexer::Allocator alloc;
JSONFactory factory(alloc);
SourceErrorManager sm;
JSONParser parser(factory, json, sm);
auto parsed = parser.parse();
ASSERT_TRUE(parsed.hasValue());
}
TEST(JSONParserTest, SmokeTest2) {
JSLexer::Allocator alloc;
JSONFactory factory(alloc);
SourceErrorManager sm;
JSONParser parser(
factory,
"{"
" 'key1' : 1,"
" 'key2' : 'value2',"
" 'key3' : {'nested1': true},"
" \"key4\" : [false, null, 'value2']"
"}",
sm);
// Check basic assumptions.
ASSERT_STREQ("key4", factory.getString("key4")->c_str());
ASSERT_STREQ("key3", factory.getString("key3")->c_str());
ASSERT_STREQ("key2", factory.getString("key2")->c_str());
ASSERT_STREQ("key1", factory.getString("key1")->c_str());
ASSERT_STREQ("key0", factory.getString("key0")->c_str());
ASSERT_EQ(factory.getNumber(1.0)->getValue(), 1.0);
ASSERT_EQ(factory.getString("key2"), factory.getString("key2"));
// Parse an object.
auto t1 = parser.parse();
ASSERT_TRUE(t1.hasValue());
auto *o1 = llvh::dyn_cast<JSONObject>(t1.getValue());
ASSERT_NE(nullptr, o1);
ASSERT_EQ(4u, o1->size());
ASSERT_EQ(0u, o1->count("key0"));
ASSERT_EQ(o1->end(), o1->find("key0"));
ASSERT_EQ(1u, o1->count("key1"));
auto kv1 = o1->find("key1");
ASSERT_NE(o1->end(), kv1);
ASSERT_EQ((*kv1).first, factory.getString("key1"));
ASSERT_EQ((*kv1).second, factory.getNumber(1.0));
ASSERT_EQ(o1->at("key1"), (*kv1).second);
ASSERT_EQ(o1->operator[]("key1"), (*kv1).second);
ASSERT_EQ(1u, o1->count("key2"));
auto kv2 = o1->find("key2");
ASSERT_NE(o1->end(), kv2);
ASSERT_EQ((*kv2).first, factory.getString("key2"));
ASSERT_EQ((*kv2).second, factory.getString("value2"));
JSONValue *value2 = (*kv2).second;
ASSERT_EQ(1u, o1->count("key3"));
ASSERT_EQ(1u, o1->count("key4"));
// Keys are ordered in insertion order.
auto it = o1->begin();
ASSERT_STREQ("key1", (*it).first->c_str());
ASSERT_EQ(o1->find("key1"), it);
++it;
ASSERT_STREQ("key2", (*it).first->c_str());
ASSERT_EQ(o1->find("key2"), it);
++it;
ASSERT_STREQ("key3", (*it).first->c_str());
ASSERT_EQ(o1->find("key3"), it);
++it;
ASSERT_STREQ("key4", (*it).first->c_str());
ASSERT_EQ(o1->find("key4"), it);
++it;
ASSERT_EQ(o1->end(), it);
// Check the nested object
auto *o2 = llvh::dyn_cast<JSONObject>((*o1)["key3"]);
ASSERT_NE(nullptr, o2);
auto it2 = o2->begin();
ASSERT_STREQ("nested1", (*it2).first->c_str());
ASSERT_EQ(factory.getBoolean(true), (*it2).second);
++it2;
ASSERT_EQ(o2->end(), it2);
// Check the array
auto *a1 = llvh::dyn_cast<JSONArray>(o1->at("key4"));
ASSERT_NE(nullptr, a1);
ASSERT_EQ(3u, a1->size());
auto it3 = a1->begin();
ASSERT_EQ(*it3, a1->at(0));
ASSERT_EQ(*it3, (*a1)[0]);
ASSERT_EQ(*it3, factory.getBoolean(false));
++it3;
ASSERT_EQ(*it3, a1->at(1));
ASSERT_EQ(*it3, factory.getNull());
++it3;
ASSERT_EQ(*it3, a1->at(2));
ASSERT_EQ(value2, *it3); // This also checks the uniquing
++it3;
ASSERT_EQ(a1->end(), it3);
}
TEST(JSONParserTest, NegativeNumbers) {
JSLexer::Allocator alloc;
JSONFactory factory(alloc);
SourceErrorManager sm;
const std::vector<double> expectedValues{-1.0, -1.0, -0.0};
JSONParser parser(factory, "[-1.0, -1, -0]", sm);
auto t1 = parser.parse();
ASSERT_TRUE(t1.hasValue());
auto a1 = llvh::dyn_cast<JSONArray>(*t1);
ASSERT_NE(nullptr, a1);
ASSERT_EQ(a1->size(), expectedValues.size());
auto it = a1->begin();
for (double expected : expectedValues) {
auto actual = llvh::dyn_cast<JSONNumber>(*it++);
ASSERT_NE(nullptr, actual);
ASSERT_EQ(actual->getValue(), expected);
}
SourceErrorManager sm1;
JSONParser parser1(factory, "-", sm1);
auto t2 = parser1.parse();
ASSERT_FALSE(t2.hasValue());
ASSERT_EQ(sm1.getErrorCount(), 1);
}
TEST(JSONParserTest, HiddenClassTest) {
JSLexer::Allocator alloc;
JSONFactory factory(alloc);
SourceErrorManager sm;
JSONParser parser(
factory,
"[ {'key1': 1, 'key2': {'key2': 5, 'key1': 6}}, "
"{'key2': 10, 'key1': 20}]",
sm);
auto t1 = parser.parse();
ASSERT_TRUE(t1.hasValue());
auto array = llvh::dyn_cast<JSONArray>(t1.getValue());
ASSERT_NE(nullptr, array);
ASSERT_EQ(2u, array->size());
auto o1 = llvh::dyn_cast<JSONObject>(array->at(0));
ASSERT_NE(nullptr, o1);
auto o2 = llvh::dyn_cast<JSONObject>(o1->at("key2"));
ASSERT_NE(nullptr, o2);
ASSERT_EQ(o1->getHiddenClass(), o2->getHiddenClass());
auto o3 = llvh::dyn_cast<JSONObject>(array->at(1));
ASSERT_NE(nullptr, o3);
ASSERT_EQ(o1->getHiddenClass(), o3->getHiddenClass());
}
TEST(JSONParserTest, EmitTest) {
JSLexer::Allocator alloc;
JSONFactory factory(alloc);
SourceErrorManager sm;
std::string storage;
llvh::raw_string_ostream OS(storage);
JSONEmitter emitter(OS);
JSONParser parser(
factory,
"{"
" 'key1' : 1,"
" 'key2' : 'value2',"
" 'key3' : {'nested1': true},"
" \"key4\" : [false, null, 'value2']"
"}",
sm);
auto t1 = parser.parse();
ASSERT_TRUE(t1.hasValue());
t1.getValue()->emitInto(emitter);
// This intermediate variable is necessary because
// MSVC's macro preprocessor does not behave as expected with R-literals.
const char *expected =
R"#({"key1":1,"key2":"value2","key3":{"nested1":true},)#"
R"#("key4":[false,null,"value2"]})#";
EXPECT_EQ(OS.str(), expected);
}
}; // anonymous namespace