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qpdf/libtests/json.cc
2024-01-18 10:06:43 +00:00

344 lines
8.5 KiB
C++

#include <qpdf/assert_test.h>
#include <qpdf/JSON.hh>
#include <qpdf/Pipeline.hh>
#include <qpdf/Pl_String.hh>
#include <qpdf/QPDF.hh>
#include <qpdf/QPDFObjectHandle.hh>
#include <iostream>
static void
check(JSON const& j, std::string const& exp)
{
if (exp != j.unparse()) {
std::cout << "Got " << j.unparse() << "; wanted " << exp << "\n";
}
}
static void
test_main()
{
JSON jstr = JSON::makeString("<1>\xcf\x80<2>\xf0\x9f\xa5\x94\\\"<3>\x03\t\b\r\n<4>");
check(
jstr,
"\"<1>\xcf\x80<2>\xf0\x9f\xa5\x94\\\\\\\"<3>"
"\\u0003\\t\\b\\r\\n<4>\"");
JSON jnull = JSON::makeNull();
check(jnull, "null");
assert(jnull.isNull());
std::string value;
assert(!jnull.getNumber(value));
JSON jarr = JSON::makeArray();
check(jarr, "[]");
JSON jstr2 = JSON::makeString("a\tb");
assert(jstr2.getString(value));
assert(value == "a\tb");
assert(!jstr2.getNumber(value));
/* cSpell: ignore jbool xavalue dvalue xdvalue */
JSON jint = JSON::makeInt(16059);
JSON jdouble = JSON::makeReal(3.14159);
JSON jexp = JSON::makeNumber("2.1e5");
JSON jbool1 = JSON::makeBool(true);
JSON jbool2 = JSON::makeBool(false);
bool bvalue = false;
assert(jbool1.getBool(bvalue));
assert(bvalue);
assert(jbool2.getBool(bvalue));
assert(!bvalue);
jarr.addArrayElement(jstr2);
jarr.addArrayElement(jnull);
jarr.addArrayElement(jint);
jarr.addArrayElement(jdouble);
jarr.addArrayElement(jexp);
check(
jarr,
"[\n"
" \"a\\tb\",\n"
" null,\n"
" 16059,\n"
" 3.14159,\n"
" 2.1e5\n"
"]");
std::vector<std::string> avalue;
assert(jarr.forEachArrayItem([&avalue](JSON j) { avalue.push_back(j.unparse()); }));
std::vector<std::string> xavalue = {
"\"a\\tb\"",
"null",
"16059",
"3.14159",
"2.1e5",
};
assert(avalue == xavalue);
JSON jmap = JSON::makeDictionary();
check(jmap, "{}");
jmap.addDictionaryMember("b", jstr2);
jmap.addDictionaryMember("a", jarr);
jmap.addDictionaryMember("c\r\nd", jnull);
jmap.addDictionaryMember("yes", JSON::makeBool(false));
jmap.addDictionaryMember("no", JSON::makeBool(true));
jmap.addDictionaryMember("empty_dict", JSON::makeDictionary());
jmap.addDictionaryMember("empty_list", JSON::makeArray());
jmap.addDictionaryMember("single", JSON::makeArray()).addArrayElement(JSON::makeInt(12));
std::string jm_str;
assert(jmap.getDictItem("b").getString(jm_str));
assert(!jmap.getDictItem("b2").getString(jm_str));
assert(!jstr2.getDictItem("b").getString(jm_str));
assert(jm_str == "a\tb");
check(
jmap,
"{\n"
" \"a\": [\n"
" \"a\\tb\",\n"
" null,\n"
" 16059,\n"
" 3.14159,\n"
" 2.1e5\n"
" ],\n"
" \"b\": \"a\\tb\",\n"
" \"c\\r\\nd\": null,\n"
" \"empty_dict\": {},\n"
" \"empty_list\": [],\n"
" \"no\": true,\n"
" \"single\": [\n"
" 12\n"
" ],\n"
" \"yes\": false\n"
"}");
for (int i = 1; i <= JSON::LATEST; ++i) {
check(QPDFObjectHandle::newReal("0.12").getJSON(i), "0.12");
check(QPDFObjectHandle::newReal(".34").getJSON(i), "0.34");
check(QPDFObjectHandle::newReal("-0.56").getJSON(i), "-0.56");
check(QPDFObjectHandle::newReal("-.78").getJSON(i), "-0.78");
}
JSON jmap2 = JSON::parse(R"({"a": 1, "b": "two", "c": [true]})");
std::map<std::string, std::string> dvalue;
assert(jmap2.forEachDictItem(
[&dvalue](std::string const& k, JSON j) { dvalue[k] = j.unparse(); }));
std::map<std::string, std::string> xdvalue = {
{"a", "1"},
{"b", "\"two\""},
{"c", "[\n true\n]"},
};
assert(dvalue == xdvalue);
auto blob_data = [](Pipeline* p) { *p << "\x01\x02\x03\x04\x05\xff\xfe\xfd\xfc\xfb"; };
JSON jblob = JSON::makeDictionary();
jblob.addDictionaryMember("normal", JSON::parse(R"("string")"));
jblob.addDictionaryMember("blob", JSON::makeBlob(blob_data));
// cSpell:ignore AQIDBAX
check(
jblob,
"{\n"
" \"blob\": \"AQIDBAX//v38+w==\",\n"
" \"normal\": \"string\"\n"
"}");
// Check default constructed JSON object (order as per JSON.hh).
JSON uninitialized;
std::string ws;
auto pl = Pl_String ("", nullptr, ws);
uninitialized.write(&pl);
assert(ws == "null");
assert(uninitialized.unparse() == "null");
try {
uninitialized.addDictionaryMember("key", jarr);
assert(false);
} catch (std::runtime_error&) {
}
assert(jmap.addDictionaryMember("42", uninitialized).isNull());
try {
uninitialized.addArrayElement(jarr);
assert(false);
} catch (std::runtime_error&) {
}
assert(jarr.addArrayElement(uninitialized).isNull());
assert(!uninitialized.isArray());
assert(!uninitialized.isDictionary());
try {
uninitialized.checkDictionaryKeySeen("key");
assert(false);
} catch (std::logic_error&) {
}
std::string st_out = "unchanged";
assert(!uninitialized.getString(st_out));
assert(!uninitialized.getNumber(st_out));
bool b_out = true;
assert(!uninitialized.getBool(b_out));
assert(b_out && st_out == "unchanged");
assert(!uninitialized.isNull());
assert(uninitialized.getDictItem("42").isNull());
assert(!uninitialized.forEachDictItem([](auto k, auto v) {}));
assert(!uninitialized.forEachArrayItem([](auto v) {}));
std::list<std::string> e;
assert(!uninitialized.checkSchema(JSON(), 0, e));
assert(!uninitialized.checkSchema(JSON(), e));
assert(e.empty());
uninitialized.setStart(0);
uninitialized.setEnd(0);
assert(uninitialized.getStart() == 0);
assert(uninitialized.getEnd() == 0);
}
static void
check_schema(JSON& obj, JSON& schema, unsigned long flags, bool exp, std::string const& description)
{
std::list<std::string> errors;
std::cout << "--- " << description << std::endl;
assert(exp == obj.checkSchema(schema, flags, errors));
for (auto const& error: errors) {
std::cout << error << std::endl;
}
std::cout << "---" << std::endl;
}
static void
test_schema()
{
/* cSpell: ignore ptional ebra */
JSON schema = JSON::parse(R"(
{
"one": {
"a": {
"q": "queue",
"r": {
"x": "ecks"
},
"s": [
{
"ss": "esses"
}
]
}
},
"two": [
{
"goose": "gander",
"glarp": "enspliel"
}
],
"three": {
"<objid>": {
"z": "ebra",
"o": "ptional"
}
},
"four": [
{ "first": "first element" },
{ "second": "second element" }
]
}
)");
JSON a = JSON::parse(R"(["not a", "dictionary"])");
check_schema(a, schema, 0, false, "top-level type mismatch");
JSON b = JSON::parse(R"(
{
"one": {
"a": {
"t": "oops",
"r": [
"x",
"ecks",
"y",
"why"
],
"s": {
"z": "esses"
}
}
},
"two": [
{
"goose": "0 gander",
"glarp": "0 enspliel"
},
{
"goose": "1 gander",
"flarp": "1 enspliel"
},
2,
[
"three"
],
{
"goose": "4 gander",
"glarp": 4
}
],
"three": {
"anything": {
"x": "oops",
"o": "okay"
},
"else": {
"z": "okay"
}
},
"four": [
{"first": "missing second"}
]
}
)");
check_schema(b, schema, 0, false, "missing items");
JSON bad_schema = JSON::parse(R"({"a": true, "b": "potato?"})");
check_schema(bad_schema, bad_schema, 0, false, "bad schema field type");
JSON c = JSON::parse(R"(
{
"four": [
{ "first": 1 },
{ "oops": [2] }
]
}
)");
check_schema(c, schema, JSON::f_optional, false, "array element mismatch");
// "two" exercises the case of the JSON containing a single
// element where the schema has an array.
JSON good = JSON::parse(R"(
{
"one": {
"a": {
"q": "potato",
"r": {
"x": [1, null]
},
"s": [
{"ss": null},
{"ss": "anything"}
]
}
},
"two": {
"glarp": "enspliel",
"goose": 3.14
},
"three": {
"<objid>": {
"z": "ebra"
}
},
"four": [
{ "first": 1 },
{ "second": [2] }
]
}
)");
check_schema(good, schema, 0, false, "not optional");
check_schema(good, schema, JSON::f_optional, true, "pass");
}
int
main()
{
test_main();
test_schema();
assert(QPDF::test_json_validators());
std::cout << "end of json tests\n";
return 0;
}