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ea94518a64
json/test/JSON_unit.cc
Niels ea94518a64 + more test cases
2014-12-28 17:09:38 +01:00

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#define CATCH_CONFIG_MAIN
#include "catch.hpp"
#include "JSON.h"
TEST_CASE("array")
{
SECTION("Basics")
{
// construction with given type
JSON j(JSON::value_type::array);
CHECK(j.type() == JSON::value_type::array);
// const object
const JSON j_const (j);
// string representation of default value
CHECK(j.toString() == "[]");
// iterators
CHECK(j.begin() != j.end());
CHECK(j.cbegin() != j.cend());
// check payload
//CHECK(*(j.data().array) == JSON::array_t());
//CHECK(*(j_const.data().array) == JSON::array_t());
// container members
CHECK(j.size() == 0);
CHECK(j.empty() == true);
// implicit conversions
CHECK_NOTHROW(JSON::array_t v = j);
CHECK_THROWS_AS(JSON::object_t v = j, std::logic_error);
CHECK_THROWS_AS(std::string v = j, std::logic_error);
CHECK_THROWS_AS(bool v = j, std::logic_error);
CHECK_THROWS_AS(int v = j, std::logic_error);
CHECK_THROWS_AS(double v = j, std::logic_error);
// explicit conversions
CHECK_NOTHROW(auto v = j.get<JSON::array_t>());
CHECK_THROWS_AS(auto v = j.get<JSON::object_t>(), std::logic_error);
CHECK_THROWS_AS(auto v = j.get<std::string>(), std::logic_error);
CHECK_THROWS_AS(auto v = j.get<bool>(), std::logic_error);
CHECK_THROWS_AS(auto v = j.get<int>(), std::logic_error);
CHECK_THROWS_AS(auto v = j.get<double>(), std::logic_error);
// transparent usage
auto id = [](JSON::array_t v)
{
return v;
};
CHECK(id(j) == j.get<JSON::array_t>());
// copy constructor
JSON k(j);
CHECK(k == j);
// copy assignment
k = j;
CHECK(k == j);
// move constructor
JSON l = std::move(k);
CHECK(l == j);
}
SECTION("Create from value")
{
JSON::array_t v1 = {"string", 1, 1.0, false, nullptr};
JSON j1 = v1;
CHECK(j1.get<JSON::array_t>() == v1);
JSON j2 = {"string", 1, 1.0, false, nullptr};
JSON::array_t v2 = j2;
CHECK(j2.get<JSON::array_t>() == v1);
CHECK(j2.get<JSON::array_t>() == v2);
// special tests to make sure construction from initializer list works
// case 1: there is an element that is not an array
JSON j3 = { {"foo", "bar"}, 3 };
CHECK(j3.type() == JSON::value_type::array);
// case 2: there is an element with more than two elements
JSON j4 = { {"foo", "bar"}, {"one", "two", "three"} };
CHECK(j4.type() == JSON::value_type::array);
// case 3: there is an element whose first element is not a string
JSON j5 = { {"foo", "bar"}, {true, "baz"} };
CHECK(j5.type() == JSON::value_type::array);
// check if nested arrays work and are recognized as arrays
JSON j6 = { {{"foo", "bar"}} };
CHECK(j6.type() == JSON::value_type::array);
CHECK(j6.size() == 1);
CHECK(j6[0].type() == JSON::value_type::object);
// move constructor
JSON j7(std::move(v1));
CHECK(j7 == j1);
}
SECTION("Array operators")
{
JSON j = {0, 1, 2, 3, 4, 5, 6};
// read
const int v1 = j[3];
CHECK(v1 == 3);
// write
j[4] = 9;
int v2 = j[4];
CHECK(v2 == 9);
// size
CHECK (j.size() == 7);
// push_back for different value types
j.push_back(7);
j.push_back("const char*");
j.push_back(42.23);
std::string s = "std::string";
j.push_back(s);
j.push_back(false);
j.push_back(nullptr);
j.push_back(j);
CHECK (j.size() == 14);
// operator+= for different value types
j += 7;
j += "const char*";
j += 42.23;
j += s;
j += false;
j += nullptr;
j += j;
CHECK (j.size() == 21);
// implicit transformation into an array
JSON empty1, empty2;
empty1 += "foo";
empty2.push_back("foo");
CHECK(empty1.type() == JSON::value_type::array);
CHECK(empty2.type() == JSON::value_type::array);
CHECK(empty1 == empty2);
// exceptions
JSON nonarray = 1;
CHECK_THROWS_AS(nonarray.at(0), std::domain_error);
CHECK_THROWS_AS(const int i = nonarray[0], std::domain_error);
CHECK_NOTHROW(j[21]);
CHECK_THROWS_AS(const int i = j.at(21), std::out_of_range);
CHECK_THROWS_AS(nonarray[0] = 10, std::domain_error);
CHECK_NOTHROW(j[21] = 5);
CHECK_THROWS_AS(j.at(21) = 5, std::out_of_range);
CHECK_THROWS_AS(nonarray += 2, std::runtime_error);
const JSON nonarray_const = nonarray;
const JSON j_const = j;
CHECK_THROWS_AS(nonarray_const.at(0), std::domain_error);
CHECK_THROWS_AS(const int i = nonarray_const[0], std::domain_error);
CHECK_NOTHROW(j_const[21]);
CHECK_THROWS_AS(const int i = j.at(21), std::out_of_range);
{
JSON nonarray2 = JSON(1);
JSON nonarray3 = JSON(2);
JSON empty3 = JSON();
CHECK_THROWS_AS(nonarray2.push_back(nonarray3), std::runtime_error);
CHECK_NOTHROW(empty3.push_back(nonarray3));
CHECK(empty3.type() == JSON::value_type::array);
}
const JSON k = j;
CHECK_NOTHROW(k[21]);
CHECK_THROWS_AS(const int i = k.at(21), std::out_of_range);
// add initializer list
j.push_back({"a", "b", "c"});
CHECK (j.size() == 24);
// clear()
JSON j7 = {0, 1, 2, 3, 4, 5, 6};;
CHECK(j7.size() == 7);
j7.clear();
CHECK(j7.size() == 0);
}
SECTION("Iterators")
{
std::vector<int> vec = {0, 1, 2, 3, 4, 5, 6};
JSON j1 = {0, 1, 2, 3, 4, 5, 6};
const JSON j2 = {0, 1, 2, 3, 4, 5, 6};
{
// const_iterator
for (JSON::const_iterator cit = j1.begin(); cit != j1.end(); ++cit)
{
int v = *cit;
CHECK(v == vec[static_cast<size_t>(v)]);
if (cit == j1.begin())
{
CHECK(v == 0);
}
}
}
{
// const_iterator with cbegin/cend
for (JSON::const_iterator cit = j1.cbegin(); cit != j1.cend(); ++cit)
{
int v = *cit;
CHECK(v == vec[static_cast<size_t>(v)]);
if (cit == j1.cbegin())
{
CHECK(v == 0);
}
}
}
{
// range based for
for (auto el : j1)
{
int v = el;
CHECK(v == vec[static_cast<size_t>(v)]);
}
}
{
// iterator
for (JSON::iterator cit = j1.begin(); cit != j1.end(); ++cit)
{
int v_old = *cit;
*cit = cit->get<int>() * 2;
int v = *cit;
CHECK(v == vec[static_cast<size_t>(v_old)] * 2);
if (cit == j1.begin())
{
CHECK(v == 0);
}
}
}
{
// const_iterator (on const object)
for (JSON::const_iterator cit = j2.begin(); cit != j2.end(); ++cit)
{
int v = *cit;
CHECK(v == vec[static_cast<size_t>(v)]);
if (cit == j2.begin())
{
CHECK(v == 0);
}
}
}
{
// const_iterator with cbegin/cend (on const object)
for (JSON::const_iterator cit = j2.cbegin(); cit != j2.cend(); ++cit)
{
int v = *cit;
CHECK(v == vec[static_cast<size_t>(v)]);
if (cit == j2.cbegin())
{
CHECK(v == 0);
}
}
}
{
// range based for (on const object)
for (auto el : j2)
{
int v = el;
CHECK(v == vec[static_cast<size_t>(v)]);
}
}
}
}
TEST_CASE("object")
{
SECTION("Basics")
{
// construction with given type
JSON j(JSON::value_type::object);
CHECK(j.type() == JSON::value_type::object);
// const object
const JSON j_const = j;
// string representation of default value
CHECK(j.toString() == "{}");
// iterators
CHECK(j.begin() != j.end());
CHECK(j.cbegin() != j.cend());
// check payload
//CHECK(*(j.data().object) == JSON::object_t());
//CHECK(*(j_const.data().object) == JSON::object_t());
// container members
CHECK(j.size() == 0);
CHECK(j.empty() == true);
// implicit conversions
CHECK_THROWS_AS(JSON::array_t v = j, std::logic_error);
CHECK_NOTHROW(JSON::object_t v = j);
CHECK_THROWS_AS(std::string v = j, std::logic_error);
CHECK_THROWS_AS(bool v = j, std::logic_error);
CHECK_THROWS_AS(int v = j, std::logic_error);
CHECK_THROWS_AS(double v = j, std::logic_error);
// explicit conversions
CHECK_THROWS_AS(auto v = j.get<JSON::array_t>(), std::logic_error);
CHECK_NOTHROW(auto v = j.get<JSON::object_t>());
CHECK_THROWS_AS(auto v = j.get<std::string>(), std::logic_error);
CHECK_THROWS_AS(auto v = j.get<bool>(), std::logic_error);
CHECK_THROWS_AS(auto v = j.get<int>(), std::logic_error);
CHECK_THROWS_AS(auto v = j.get<double>(), std::logic_error);
// transparent usage
auto id = [](JSON::object_t v)
{
return v;
};
CHECK(id(j) == j.get<JSON::object_t>());
// copy constructor
JSON k(j);
CHECK(k == j);
// copy assignment
k = j;
CHECK(k == j);
// move constructor
JSON l = std::move(k);
CHECK(l == j);
}
SECTION("Create from value")
{
JSON::object_t v1 = { {"v1", "string"}, {"v2", 1}, {"v3", 1.0}, {"v4", false} };
JSON j1 = v1;
CHECK(j1.get<JSON::object_t>() == v1);
JSON j2 = { {"v1", "string"}, {"v2", 1}, {"v3", 1.0}, {"v4", false} };
JSON::object_t v2 = j2;
CHECK(j2.get<JSON::object_t>() == v1);
CHECK(j2.get<JSON::object_t>() == v2);
// check if multiple keys are ignored
JSON j3 = { {"key", "value"}, {"key", 1} };
CHECK(j3.size() == 1);
// move constructor
JSON j7(std::move(v1));
CHECK(j7 == j1);
}
SECTION("Object operators")
{
JSON j = {{"k0", "v0"}, {"k1", nullptr}, {"k2", 42}, {"k3", 3.141}, {"k4", true}};
const JSON k = j;
// read
{
const std::string v0 = j["k0"];
CHECK(v0 == "v0");
auto v1 = j["k1"];
CHECK(v1 == nullptr);
int v2 = j["k2"];
CHECK(v2 == 42);
double v3 = j["k3"];
CHECK(v3 == 3.141);
bool v4 = j["k4"];
CHECK(v4 == true);
}
{
const std::string v0 = j[std::string("k0")];
CHECK(v0 == "v0");
auto v1 = j[std::string("k1")];
CHECK(v1 == nullptr);
int v2 = j[std::string("k2")];
CHECK(v2 == 42);
double v3 = j[std::string("k3")];
CHECK(v3 == 3.141);
bool v4 = j[std::string("k4")];
CHECK(v4 == true);
}
{
const std::string v0 = k[std::string("k0")];
CHECK(v0 == "v0");
auto v1 = k[std::string("k1")];
CHECK(v1 == nullptr);
int v2 = k[std::string("k2")];
CHECK(v2 == 42);
double v3 = k[std::string("k3")];
CHECK(v3 == 3.141);
bool v4 = k[std::string("k4")];
CHECK(v4 == true);
}
// write (replace)
j["k0"] = "new v0";
CHECK(j["k0"] == "new v0");
// write (add)
j["k5"] = false;
// size
CHECK(j.size() == 6);
// find
CHECK(j.find("k0") != j.end());
CHECK(j.find("v0") == j.end());
CHECK(j.find(std::string("v0")) == j.end());
JSON::const_iterator i1 = j.find("k0");
JSON::iterator i2 = j.find("k0");
CHECK(k.find("k0") != k.end());
CHECK(k.find("v0") == k.end());
CHECK(k.find(std::string("v0")) == k.end());
JSON::const_iterator i22 = k.find("k0");
// at
CHECK_THROWS_AS(j.at("foo"), std::out_of_range);
CHECK_THROWS_AS(k.at("foo"), std::out_of_range);
CHECK_THROWS_AS(j.at(std::string("foo")), std::out_of_range);
CHECK_THROWS_AS(k.at(std::string("foo")), std::out_of_range);
CHECK_NOTHROW(j.at(std::string("k0")));
CHECK_NOTHROW(k.at(std::string("k0")));
{
JSON noobject = 1;
const JSON noobject_const = noobject;
CHECK_THROWS_AS(noobject.at("foo"), std::domain_error);
CHECK_THROWS_AS(noobject.at(std::string("foo")), std::domain_error);
CHECK_THROWS_AS(noobject_const.at("foo"), std::domain_error);
CHECK_THROWS_AS(noobject_const.at(std::string("foo")), std::domain_error);
CHECK_THROWS_AS(noobject["foo"], std::domain_error);
CHECK_THROWS_AS(noobject[std::string("foo")], std::domain_error);
CHECK_THROWS_AS(noobject_const[std::string("foo")], std::domain_error);
}
// add pair
j.push_back(JSON::object_t::value_type {"int_key", 42});
CHECK(j["int_key"].get<int>() == 42);
j += JSON::object_t::value_type {"int_key2", 23};
CHECK(j["int_key2"].get<int>() == 23);
{
// make sure null objects are transformed
JSON je;
CHECK_NOTHROW(je.push_back(JSON::object_t::value_type {"int_key", 42}));
CHECK(je["int_key"].get<int>() == 42);
}
{
// make sure null objects are transformed
JSON je;
CHECK_NOTHROW((je += JSON::object_t::value_type {"int_key", 42}));
CHECK(je["int_key"].get<int>() == 42);
}
// add initializer list (of pairs)
{
JSON je;
je.push_back({ {"one", 1}, {"two", false}, {"three", {1, 2, 3}} });
CHECK(je["one"].get<int>() == 1);
CHECK(je["two"].get<bool>() == false);
CHECK(je["three"].size() == 3);
}
{
JSON je;
je += { {"one", 1}, {"two", false}, {"three", {1, 2, 3}} };
CHECK(je["one"].get<int>() == 1);
CHECK(je["two"].get<bool>() == false);
CHECK(je["three"].size() == 3);
}
// key/value for non-end iterator
CHECK(i1.key() == "k0");
CHECK(i1.value() == j["k0"]);
CHECK(i2.key() == "k0");
CHECK(i2.value() == j["k0"]);
// key/value for uninitialzed iterator
JSON::const_iterator i3;
JSON::iterator i4;
CHECK_THROWS_AS(i3.key(), std::out_of_range);
CHECK_THROWS_AS(i3.value(), std::out_of_range);
CHECK_THROWS_AS(i4.key(), std::out_of_range);
CHECK_THROWS_AS(i4.value(), std::out_of_range);
// key/value for end-iterator
JSON::const_iterator i5 = j.find("v0");
JSON::iterator i6 = j.find("v0");
CHECK_THROWS_AS(i5.key(), std::out_of_range);
CHECK_THROWS_AS(i5.value(), std::out_of_range);
CHECK_THROWS_AS(i6.key(), std::out_of_range);
CHECK_THROWS_AS(i6.value(), std::out_of_range);
// implicit transformation into an object
JSON empty;
empty["foo"] = "bar";
CHECK(empty.type() == JSON::value_type::object);
CHECK(empty["foo"] == "bar");
// exceptions
JSON nonarray = 1;
CHECK_THROWS_AS(const int i = nonarray["v1"], std::domain_error);
CHECK_THROWS_AS(nonarray["v1"] = 10, std::domain_error);
{
const JSON c = {{"foo", "bar"}};
CHECK_THROWS_AS(c[std::string("baz")], std::out_of_range);
}
// clear()
JSON j7 = {{"k0", 0}, {"k1", 1}, {"k2", 2}, {"k3", 3}};
CHECK(j7.size() == 4);
j7.clear();
CHECK(j7.size() == 0);
}
SECTION("Iterators")
{
JSON j1 = {{"k0", 0}, {"k1", 1}, {"k2", 2}, {"k3", 3}};
const JSON j2 = {{"k0", 0}, {"k1", 1}, {"k2", 2}, {"k3", 3}};
// iterator
for (JSON::iterator it = j1.begin(); it != j1.end(); ++it)
{
switch (static_cast<int>(it.value()))
{
case (0):
CHECK(it.key() == "k0");
break;
case (1):
CHECK(it.key() == "k1");
break;
case (2):
CHECK(it.key() == "k2");
break;
case (3):
CHECK(it.key() == "k3");
break;
default:
CHECK(false);
}
CHECK((*it).type() == JSON::value_type::number);
CHECK(it->type() == JSON::value_type::number);
}
// range-based for
for (auto& element : j1)
{
element = 2 * element.get<int>();
}
// const_iterator
for (JSON::const_iterator it = j1.begin(); it != j1.end(); ++it)
{
switch (static_cast<int>(it.value()))
{
case (0):
CHECK(it.key() == "k0");
break;
case (2):
CHECK(it.key() == "k1");
break;
case (4):
CHECK(it.key() == "k2");
break;
case (6):
CHECK(it.key() == "k3");
break;
default:
CHECK(false);
}
CHECK((*it).type() == JSON::value_type::number);
CHECK(it->type() == JSON::value_type::number);
}
// const_iterator using cbegin/cend
for (JSON::const_iterator it = j1.cbegin(); it != j1.cend(); ++it)
{
switch (static_cast<int>(it.value()))
{
case (0):
CHECK(it.key() == "k0");
break;
case (2):
CHECK(it.key() == "k1");
break;
case (4):
CHECK(it.key() == "k2");
break;
case (6):
CHECK(it.key() == "k3");
break;
default:
CHECK(false);
}
CHECK((*it).type() == JSON::value_type::number);
CHECK(it->type() == JSON::value_type::number);
}
// const_iterator (on const object)
for (JSON::const_iterator it = j2.begin(); it != j2.end(); ++it)
{
switch (static_cast<int>(it.value()))
{
case (0):
CHECK(it.key() == "k0");
break;
case (1):
CHECK(it.key() == "k1");
break;
case (2):
CHECK(it.key() == "k2");
break;
case (3):
CHECK(it.key() == "k3");
break;
default:
CHECK(false);
}
CHECK((*it).type() == JSON::value_type::number);
CHECK(it->type() == JSON::value_type::number);
}
// const_iterator using cbegin/cend (on const object)
for (JSON::const_iterator it = j2.cbegin(); it != j2.cend(); ++it)
{
switch (static_cast<int>(it.value()))
{
case (0):
CHECK(it.key() == "k0");
break;
case (1):
CHECK(it.key() == "k1");
break;
case (2):
CHECK(it.key() == "k2");
break;
case (3):
CHECK(it.key() == "k3");
break;
default:
CHECK(false);
}
CHECK((*it).type() == JSON::value_type::number);
CHECK(it->type() == JSON::value_type::number);
}
// range-based for (on const object)
for (auto element : j1)
{
CHECK(element.get<int>() >= 0);
}
}
}
TEST_CASE("null")
{
SECTION("Basics")
{
// construction with given type
JSON j;
CHECK(j.type() == JSON::value_type::null);
// string representation of default value
CHECK(j.toString() == "null");
// iterators
CHECK(j.begin() != j.end());
CHECK(j.cbegin() != j.cend());
// container members
CHECK(j.size() == 0);
CHECK(j.empty() == true);
// implicit conversions
CHECK_NOTHROW(JSON::array_t v = j);
CHECK_THROWS_AS(JSON::object_t v = j, std::logic_error);
CHECK_THROWS_AS(std::string v = j, std::logic_error);
CHECK_THROWS_AS(bool v = j, std::logic_error);
CHECK_THROWS_AS(int v = j, std::logic_error);
CHECK_THROWS_AS(double v = j, std::logic_error);
// explicit conversions
CHECK_NOTHROW(auto v = j.get<JSON::array_t>());
CHECK_THROWS_AS(auto v = j.get<JSON::object_t>(), std::logic_error);
CHECK_THROWS_AS(auto v = j.get<std::string>(), std::logic_error);
CHECK_THROWS_AS(auto v = j.get<bool>(), std::logic_error);
CHECK_THROWS_AS(auto v = j.get<int>(), std::logic_error);
CHECK_THROWS_AS(auto v = j.get<double>(), std::logic_error);
// copy constructor
JSON k(j);
CHECK(k == j);
// copy assignment
k = j;
CHECK(k == j);
// move constructor
JSON l = std::move(k);
CHECK(l == j);
}
SECTION("Create from value")
{
JSON j1 = nullptr;
CHECK(j1.type() == JSON::value_type::null);
}
SECTION("Operators")
{
// clear()
JSON j1 = nullptr;
j1.clear();
CHECK(j1 == JSON(nullptr));
}
}
TEST_CASE("string")
{
SECTION("Basics")
{
// construction with given type
JSON j(JSON::value_type::string);
CHECK(j.type() == JSON::value_type::string);
// const object
const JSON j_const = j;
// iterators
CHECK(j.begin() != j.end());
CHECK(j.cbegin() != j.cend());
// string representation of default value
CHECK(j.toString() == "\"\"");
// check payload
CHECK(*(j.data().string) == JSON::string_t());
CHECK(*(j_const.data().string) == JSON::string_t());
// container members
CHECK(j.size() == 1);
CHECK(j.empty() == false);
// implicit conversions
CHECK_NOTHROW(JSON::array_t v = j);
CHECK_THROWS_AS(JSON::object_t v = j, std::logic_error);
CHECK_NOTHROW(std::string v = j);
CHECK_THROWS_AS(bool v = j, std::logic_error);
CHECK_THROWS_AS(int v = j, std::logic_error);
CHECK_THROWS_AS(double v = j, std::logic_error);
// explicit conversions
CHECK_NOTHROW(auto v = j.get<JSON::array_t>());
CHECK_THROWS_AS(auto v = j.get<JSON::object_t>(), std::logic_error);
CHECK_NOTHROW(auto v = j.get<std::string>());
CHECK_THROWS_AS(auto v = j.get<bool>(), std::logic_error);
CHECK_THROWS_AS(auto v = j.get<int>(), std::logic_error);
CHECK_THROWS_AS(auto v = j.get<double>(), std::logic_error);
// transparent usage
auto id = [](std::string v)
{
return v;
};
CHECK(id(j) == j.get<std::string>());
// copy constructor
JSON k(j);
CHECK(k == j);
// copy assignment
k = j;
CHECK(k == j);
// move constructor
JSON l = std::move(k);
CHECK(l == j);
}
SECTION("Create from value")
{
JSON j1 = std::string("Hello, world");
std::string v1 = j1;
CHECK(j1.get<std::string>() == v1);
JSON j2 = "Hello, world";
CHECK(j2.get<std::string>() == "Hello, world");
std::string v3 = "Hello, world";
JSON j3 = std::move(v3);
CHECK(j3.get<std::string>() == "Hello, world");
}
SECTION("Operators")
{
// clear()
JSON j1 = std::string("Hello, world");
CHECK(j1.get<std::string>() == "Hello, world");
j1.clear();
CHECK(j1.get<std::string>() == "");
}
}
TEST_CASE("boolean")
{
SECTION("Basics")
{
// construction with given type
JSON j(JSON::value_type::boolean);
CHECK(j.type() == JSON::value_type::boolean);
// const object
const JSON j_const = j;
// iterators
CHECK(j.begin() != j.end());
CHECK(j.cbegin() != j.cend());
// string representation of default value
CHECK(j.toString() == "false");
// check payload
CHECK(j.data().boolean == JSON::boolean_t());
CHECK(j_const.data().boolean == JSON::boolean_t());
// container members
CHECK(j.size() == 1);
CHECK(j.empty() == false);
// implicit conversions
CHECK_NOTHROW(JSON::array_t v = j);
CHECK_THROWS_AS(JSON::object_t v = j, std::logic_error);
CHECK_THROWS_AS(std::string v = j, std::logic_error);
CHECK_NOTHROW(bool v = j);
CHECK_THROWS_AS(int v = j, std::logic_error);
CHECK_THROWS_AS(double v = j, std::logic_error);
// explicit conversions
CHECK_NOTHROW(auto v = j.get<JSON::array_t>());
CHECK_THROWS_AS(auto v = j.get<JSON::object_t>(), std::logic_error);
CHECK_THROWS_AS(auto v = j.get<std::string>(), std::logic_error);
CHECK_NOTHROW(auto v = j.get<bool>());
CHECK_THROWS_AS(auto v = j.get<int>(), std::logic_error);
CHECK_THROWS_AS(auto v = j.get<double>(), std::logic_error);
// transparent usage
auto id = [](bool v)
{
return v;
};
CHECK(id(j) == j.get<bool>());
// copy constructor
JSON k(j);
CHECK(k == j);
// copy assignment
k = j;
CHECK(k == j);
// move constructor
JSON l = std::move(k);
CHECK(l == j);
}
SECTION("Create from value")
{
JSON j1 = true;
bool v1 = j1;
CHECK(j1.get<bool>() == v1);
JSON j2 = false;
bool v2 = j2;
CHECK(j2.get<bool>() == v2);
}
SECTION("Operators")
{
// clear()
JSON j1 = true;
CHECK(j1.get<bool>() == true);
j1.clear();
CHECK(j1.get<bool>() == false);
}
}
TEST_CASE("number (int)")
{
SECTION("Basics")
{
// construction with given type
JSON j(JSON::value_type::number);
CHECK(j.type() == JSON::value_type::number);
// const object
const JSON j_const = j;
// iterators
CHECK(j.begin() != j.end());
CHECK(j.cbegin() != j.cend());
// string representation of default value
CHECK(j.toString() == "0");
// check payload
CHECK(j.data().number == JSON::number_t());
CHECK(j_const.data().number == JSON::number_t());
// container members
CHECK(j.size() == 1);
CHECK(j.empty() == false);
// implicit conversions
CHECK_NOTHROW(JSON::array_t v = j);
CHECK_THROWS_AS(JSON::object_t v = j, std::logic_error);
CHECK_THROWS_AS(std::string v = j, std::logic_error);
CHECK_THROWS_AS(bool v = j, std::logic_error);
CHECK_NOTHROW(int v = j);
CHECK_NOTHROW(double v = j);
// explicit conversions
CHECK_NOTHROW(auto v = j.get<JSON::array_t>());
CHECK_THROWS_AS(auto v = j.get<JSON::object_t>(), std::logic_error);
CHECK_THROWS_AS(auto v = j.get<std::string>(), std::logic_error);
CHECK_THROWS_AS(auto v = j.get<bool>(), std::logic_error);
CHECK_NOTHROW(auto v = j.get<int>());
CHECK_NOTHROW(auto v = j.get<double>());
// transparent usage
auto id = [](int v)
{
return v;
};
CHECK(id(j) == j.get<int>());
// copy constructor
JSON k(j);
CHECK(k == j);
// copy assignment
k = j;
CHECK(k == j);
// move constructor
JSON l = std::move(k);
CHECK(l == j);
}
SECTION("Create from value")
{
JSON j1 = 23;
int v1 = j1;
CHECK(j1.get<int>() == v1);
JSON j2 = 42;
int v2 = j2;
CHECK(j2.get<int>() == v2);
}
SECTION("Operators")
{
// clear()
JSON j1 = 42;
CHECK(j1.get<int>() == 42);
j1.clear();
CHECK(j1.get<int>() == 0);
// find()
CHECK(j1.find("foo") == j1.end());
CHECK(j1.find(std::string("foo")) == j1.end());
const JSON j2 = j1;
CHECK(j2.find("foo") == j2.end());
CHECK(j2.find(std::string("foo")) == j2.end());
}
}
TEST_CASE("number (float)")
{
SECTION("Basics")
{
// construction with given type
JSON j(JSON::value_type::number_float);
CHECK(j.type() == JSON::value_type::number_float);
// const object
const JSON j_const = j;
// iterators
CHECK(j.begin() != j.end());
CHECK(j.cbegin() != j.cend());
// string representation of default value
CHECK(j.toString() == "0.000000");
// check payload
CHECK(j.data().number_float == JSON::number_float_t());
CHECK(j_const.data().number_float == JSON::number_float_t());
// container members
CHECK(j.size() == 1);
CHECK(j.empty() == false);
// implicit conversions
CHECK_NOTHROW(JSON::array_t v = j);
CHECK_THROWS_AS(JSON::object_t v = j, std::logic_error);
CHECK_THROWS_AS(std::string v = j, std::logic_error);
CHECK_THROWS_AS(bool v = j, std::logic_error);
CHECK_NOTHROW(int v = j);
CHECK_NOTHROW(double v = j);
// explicit conversions
CHECK_NOTHROW(auto v = j.get<JSON::array_t>());
CHECK_THROWS_AS(auto v = j.get<JSON::object_t>(), std::logic_error);
CHECK_THROWS_AS(auto v = j.get<std::string>(), std::logic_error);
CHECK_THROWS_AS(auto v = j.get<bool>(), std::logic_error);
CHECK_NOTHROW(auto v = j.get<int>());
CHECK_NOTHROW(auto v = j.get<double>());
// transparent usage
auto id = [](double v)
{
return v;
};
CHECK(id(j) == j.get<double>());
// copy constructor
JSON k(j);
CHECK(k == j);
// copy assignment
k = j;
CHECK(k == j);
// move constructor
JSON l = std::move(k);
CHECK(l == j);
}
SECTION("Create from value")
{
JSON j1 = 3.1415926;
double v1 = j1;
CHECK(j1.get<double>() == v1);
JSON j2 = 2.7182818;
double v2 = j2;
CHECK(j2.get<double>() == v2);
}
SECTION("Operators")
{
// clear()
JSON j1 = 3.1415926;
CHECK(j1.get<double>() == 3.1415926);
j1.clear();
CHECK(j1.get<double>() == 0.0);
}
}
TEST_CASE("Comparisons")
{
JSON j1 = {0, 1, 2, 3, 4};
JSON j2 = {{"foo", "bar"}, {"baz", "bam"}};
JSON j3 = true;
JSON j4 = nullptr;
JSON j5 = 42;
JSON j6 = 23.42;
JSON j7 = "hello";
CHECK((j1 == j1) == true);
CHECK((j1 == j2) == false);
CHECK((j1 == j3) == false);
CHECK((j1 == j4) == false);
CHECK((j1 == j5) == false);
CHECK((j1 == j6) == false);
CHECK((j1 == j7) == false);
CHECK((j2 == j1) == false);
CHECK((j2 == j2) == true);
CHECK((j2 == j3) == false);
CHECK((j2 == j4) == false);
CHECK((j2 == j5) == false);
CHECK((j2 == j6) == false);
CHECK((j2 == j7) == false);
CHECK((j3 == j1) == false);
CHECK((j3 == j2) == false);
CHECK((j3 == j3) == true);
CHECK((j3 == j4) == false);
CHECK((j3 == j5) == false);
CHECK((j3 == j6) == false);
CHECK((j3 == j7) == false);
CHECK((j4 == j1) == false);
CHECK((j4 == j2) == false);
CHECK((j4 == j3) == false);
CHECK((j4 == j4) == true);
CHECK((j4 == j5) == false);
CHECK((j4 == j6) == false);
CHECK((j4 == j7) == false);
CHECK((j5 == j1) == false);
CHECK((j5 == j2) == false);
CHECK((j5 == j3) == false);
CHECK((j5 == j4) == false);
CHECK((j5 == j5) == true);
CHECK((j5 == j6) == false);
CHECK((j5 == j7) == false);
CHECK((j6 == j1) == false);
CHECK((j6 == j2) == false);
CHECK((j6 == j3) == false);
CHECK((j6 == j4) == false);
CHECK((j6 == j5) == false);
CHECK((j6 == j6) == true);
CHECK((j6 == j7) == false);
CHECK((j7 == j1) == false);
CHECK((j7 == j2) == false);
CHECK((j7 == j3) == false);
CHECK((j7 == j4) == false);
CHECK((j7 == j5) == false);
CHECK((j7 == j6) == false);
CHECK((j7 == j7) == true);
CHECK((j1 != j1) == false);
CHECK((j1 != j2) == true);
CHECK((j1 != j3) == true);
CHECK((j1 != j4) == true);
CHECK((j1 != j5) == true);
CHECK((j1 != j6) == true);
CHECK((j1 != j7) == true);
CHECK((j2 != j1) == true);
CHECK((j2 != j2) == false);
CHECK((j2 != j3) == true);
CHECK((j2 != j4) == true);
CHECK((j2 != j5) == true);
CHECK((j2 != j6) == true);
CHECK((j2 != j7) == true);
CHECK((j3 != j1) == true);
CHECK((j3 != j2) == true);
CHECK((j3 != j3) == false);
CHECK((j3 != j4) == true);
CHECK((j3 != j5) == true);
CHECK((j3 != j6) == true);
CHECK((j3 != j7) == true);
CHECK((j4 != j1) == true);
CHECK((j4 != j2) == true);
CHECK((j4 != j3) == true);
CHECK((j4 != j4) == false);
CHECK((j4 != j5) == true);
CHECK((j4 != j6) == true);
CHECK((j4 != j7) == true);
CHECK((j5 != j1) == true);
CHECK((j5 != j2) == true);
CHECK((j5 != j3) == true);
CHECK((j5 != j4) == true);
CHECK((j5 != j5) == false);
CHECK((j5 != j6) == true);
CHECK((j5 != j7) == true);
CHECK((j6 != j1) == true);
CHECK((j6 != j2) == true);
CHECK((j6 != j3) == true);
CHECK((j6 != j4) == true);
CHECK((j6 != j5) == true);
CHECK((j6 != j6) == false);
CHECK((j6 != j7) == true);
CHECK((j7 != j1) == true);
CHECK((j7 != j2) == true);
CHECK((j7 != j3) == true);
CHECK((j7 != j4) == true);
CHECK((j7 != j5) == true);
CHECK((j7 != j6) == true);
CHECK((j7 != j7) == false);
}
TEST_CASE("Parser")
{
SECTION("null")
{
// accept the exact values
CHECK(JSON::parse("null") == JSON(nullptr));
// ignore whitespace
CHECK(JSON::parse(" null ") == JSON(nullptr));
CHECK(JSON::parse("\tnull\n") == JSON(nullptr));
// respect capitalization
CHECK_THROWS_AS(JSON::parse("Null"), std::invalid_argument);
CHECK_THROWS_AS(JSON::parse("NULL"), std::invalid_argument);
// do not accept prefixes
CHECK_THROWS_AS(JSON::parse("n"), std::invalid_argument);
CHECK_THROWS_AS(JSON::parse("nu"), std::invalid_argument);
CHECK_THROWS_AS(JSON::parse("nul"), std::invalid_argument);
}
SECTION("string")
{
// accept some values
CHECK(JSON::parse("\"\"") == JSON(""));
CHECK(JSON::parse("\"foo\"") == JSON("foo"));
// escape characters
CHECK_THROWS_AS(JSON::parse("\"\\\""), std::invalid_argument);
CHECK_NOTHROW(JSON::parse("\"\\\"\""));
// quotes must be closed
CHECK_THROWS_AS(JSON::parse("\""), std::invalid_argument);
}
SECTION("boolean")
{
// accept the exact values
CHECK(JSON::parse("true") == JSON(true));
CHECK(JSON::parse("false") == JSON(false));
// ignore whitespace
CHECK(JSON::parse(" true ") == JSON(true));
CHECK(JSON::parse("\tfalse\n") == JSON(false));
// respect capitalization
CHECK_THROWS_AS(JSON::parse("True"), std::invalid_argument);
CHECK_THROWS_AS(JSON::parse("False"), std::invalid_argument);
// do not accept prefixes
CHECK_THROWS_AS(JSON::parse("t"), std::invalid_argument);
CHECK_THROWS_AS(JSON::parse("tr"), std::invalid_argument);
CHECK_THROWS_AS(JSON::parse("tru"), std::invalid_argument);
CHECK_THROWS_AS(JSON::parse("f"), std::invalid_argument);
CHECK_THROWS_AS(JSON::parse("fa"), std::invalid_argument);
CHECK_THROWS_AS(JSON::parse("fal"), std::invalid_argument);
CHECK_THROWS_AS(JSON::parse("fals"), std::invalid_argument);
}
SECTION("number (int)")
{
// accept the exact values
CHECK(JSON::parse("0") == JSON(0));
CHECK(JSON::parse("-0") == JSON(0));
CHECK(JSON::parse("1") == JSON(1));
CHECK(JSON::parse("-1") == JSON(-1));
CHECK(JSON::parse("12345678") == JSON(12345678));
CHECK(JSON::parse("-12345678") == JSON(-12345678));
CHECK(JSON::parse("0.0") == JSON(0));
CHECK(JSON::parse("-0.0") == JSON(0));
CHECK(JSON::parse("1.0") == JSON(1));
CHECK(JSON::parse("-1.0") == JSON(-1));
CHECK(JSON::parse("12345678.0") == JSON(12345678));
CHECK(JSON::parse("-12345678.0") == JSON(-12345678));
CHECK(JSON::parse("17e0") == JSON(17));
CHECK(JSON::parse("17e1") == JSON(170));
CHECK(JSON::parse("17e3") == JSON(17000));
CHECK(JSON::parse("17e+0") == JSON(17));
CHECK(JSON::parse("17e+1") == JSON(170));
CHECK(JSON::parse("17e+3") == JSON(17000));
CHECK(JSON::parse("17E0") == JSON(17));
CHECK(JSON::parse("17E1") == JSON(170));
CHECK(JSON::parse("17E3") == JSON(17000));
CHECK(JSON::parse("17E+0") == JSON(17));
CHECK(JSON::parse("17E+1") == JSON(170));
CHECK(JSON::parse("17E+3") == JSON(17000));
CHECK(JSON::parse("10000e-0") == JSON(10000));
CHECK(JSON::parse("10000e-1") == JSON(1000));
CHECK(JSON::parse("10000e-4") == JSON(1));
CHECK(JSON::parse("10000E-0") == JSON(10000));
CHECK(JSON::parse("10000E-1") == JSON(1000));
CHECK(JSON::parse("10000E-4") == JSON(1));
CHECK(JSON::parse("17.0e0") == JSON(17));
CHECK(JSON::parse("17.0e1") == JSON(170));
CHECK(JSON::parse("17.0e3") == JSON(17000));
CHECK(JSON::parse("17.0e+0") == JSON(17));
CHECK(JSON::parse("17.0e+1") == JSON(170));
CHECK(JSON::parse("17.0e+3") == JSON(17000));
CHECK(JSON::parse("17.0E0") == JSON(17));
CHECK(JSON::parse("17.0E1") == JSON(170));
CHECK(JSON::parse("17.0E3") == JSON(17000));
CHECK(JSON::parse("17.0E+0") == JSON(17));
CHECK(JSON::parse("17.0E+1") == JSON(170));
CHECK(JSON::parse("17.0E+3") == JSON(17000));
CHECK(JSON::parse("10000.0e-0") == JSON(10000));
CHECK(JSON::parse("10000.0e-1") == JSON(1000));
CHECK(JSON::parse("10000.0e-4") == JSON(1));
CHECK(JSON::parse("10000.0E-0") == JSON(10000));
CHECK(JSON::parse("10000.0E-1") == JSON(1000));
CHECK(JSON::parse("10000.0E-4") == JSON(1));
// trailing zero is not allowed
//CHECK_THROWS_AS(JSON::parse("01"), std::invalid_argument);
// whitespace inbetween is an error
//CHECK_THROWS_AS(JSON::parse("1 0"), std::invalid_argument);
// only one minus is allowd
CHECK_THROWS_AS(JSON::parse("--1"), std::invalid_argument);
// string representations are not allowed
CHECK_THROWS_AS(JSON::parse("NAN"), std::invalid_argument);
CHECK_THROWS_AS(JSON::parse("nan"), std::invalid_argument);
CHECK_THROWS_AS(JSON::parse("INF"), std::invalid_argument);
CHECK_THROWS_AS(JSON::parse("inf"), std::invalid_argument);
CHECK_THROWS_AS(JSON::parse("INFINITY"), std::invalid_argument);
CHECK_THROWS_AS(JSON::parse("infinity"), std::invalid_argument);
}
SECTION("parse from C++ string")
{
std::string s = "{ \"foo\": [1,2,true] }";
JSON j = JSON::parse(s);
CHECK(j["foo"].size() == 3);
}
SECTION("parse from stream")
{
std::stringstream s;
s << "{ \"foo\": [1,2,true] }";
JSON j;
j << s;
CHECK(j["foo"].size() == 3);
}
SECTION("user-defined string literal operator")
{
auto j1 = "[1,2,3]"_json;
JSON j2 = {1, 2, 3};
CHECK(j1 == j2);
auto j3 = "{\"key\": \"value\"}"_json;
CHECK(j3["key"] == "value");
}
SECTION("Errors")
{
CHECK_THROWS_AS(JSON::parse(""), std::invalid_argument);
CHECK_THROWS_AS(JSON::parse(std::string("")), std::invalid_argument);
}
}
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