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#include "bencode2.h"
#include <cppunit/extensions/HelperMacros.h>
#include "RecoverableException.h"
namespace aria2 {
class Bencode2Test:public CppUnit::TestFixture {
CPPUNIT_TEST_SUITE(Bencode2Test);
CPPUNIT_TEST(testDecode);
CPPUNIT_TEST(testDecode_overflow);
CPPUNIT_TEST(testEncode);
CPPUNIT_TEST_SUITE_END();
private:
public:
void testDecode();
void testDecode_overflow();
void testEncode();
};
CPPUNIT_TEST_SUITE_REGISTRATION( Bencode2Test );
void Bencode2Test::testDecode()
{
{
// string, integer and list in dict
std::string src = "d4:name5:aria24:sizei12345678900e5:filesl3:bin3:docee";
SharedHandle<ValueBase> r = bencode2::decode(src.begin(), src.end());
const Dict* dict = downcast<Dict>(r);
CPPUNIT_ASSERT(dict);
CPPUNIT_ASSERT_EQUAL(std::string("aria2"),
downcast<String>(dict->get("name"))->s());
CPPUNIT_ASSERT_EQUAL(static_cast<Integer::ValueType>(12345678900LL),
downcast<Integer>(dict->get("size"))->i());
const List* list = downcast<List>(dict->get("files"));
CPPUNIT_ASSERT(list);
CPPUNIT_ASSERT_EQUAL(static_cast<size_t>(2), list->size());
CPPUNIT_ASSERT_EQUAL(std::string("bin"),
downcast<String>(list->get(0))->s());
CPPUNIT_ASSERT_EQUAL(std::string("doc"),
downcast<String>(list->get(1))->s());
}
{
// dict in list
std::string src = "ld1:ki123eee";
SharedHandle<ValueBase> r = bencode2::decode(src.begin(), src.end());
const List* list = downcast<List>(r);
CPPUNIT_ASSERT(list);
CPPUNIT_ASSERT_EQUAL(static_cast<size_t>(1), list->size());
const Dict* dict = downcast<Dict>(list->get(0));
CPPUNIT_ASSERT(dict);
CPPUNIT_ASSERT_EQUAL(static_cast<Integer::ValueType>(123),
downcast<Integer>(dict->get("k"))->i());
}
{
// empty key is allowed
std::string src = "d0:1:ve";
SharedHandle<ValueBase> s = bencode2::decode(src.begin(), src.end());
}
{
// empty string
std::string src = "0:";
SharedHandle<ValueBase> s = bencode2::decode(src.begin(), src.end());
CPPUNIT_ASSERT_EQUAL(std::string(""), downcast<String>(s)->s());
}
{
// empty dict
std::string src = "de";
SharedHandle<ValueBase> d = bencode2::decode(src.begin(), src.end());
CPPUNIT_ASSERT(downcast<Dict>(d)->empty());
}
{
// empty list
std::string src = "le";
SharedHandle<ValueBase> l = bencode2::decode(src.begin(), src.end());
CPPUNIT_ASSERT(downcast<List>(l)->empty());
}
{
// integer, without ending 'e'
std::string src = "i3";
try {
bencode2::decode(src.begin(), src.end());
CPPUNIT_FAIL("exception must be thrown.");
} catch(RecoverableException& e) {
CPPUNIT_ASSERT_EQUAL(std::string("Bencode decoding failed:"
" Integer expected but none found"),
std::string(e.what()));
}
}
{
// dict, without ending 'e'
std::string src = "d";
try {
bencode2::decode(src.begin(), src.end());
CPPUNIT_FAIL("exception must be thrown.");
} catch(RecoverableException& e) {
CPPUNIT_ASSERT_EQUAL(std::string("Bencode decoding failed:"
" Unexpected EOF in dict context."
" 'e' expected."),
std::string(e.what()));
}
}
{
// list, without ending 'e'
try {
std::string src = "l";
bencode2::decode(src.begin(), src.end());
CPPUNIT_FAIL("exception must be thrown.");
} catch(RecoverableException& e) {
CPPUNIT_ASSERT_EQUAL(std::string("Bencode decoding failed:"
" Unexpected EOF in list context."
" 'e' expected."),
std::string(e.what()));
}
}
{
// string, less than the specified length.
try {
std::string src = "3:ab";
bencode2::decode(src.begin(), src.end());
CPPUNIT_FAIL("exception must be thrown.");
} catch(RecoverableException& e) {
CPPUNIT_ASSERT_EQUAL(std::string("Bencode decoding failed:"
" Expected 3 bytes of data,"
" but only 2 read."),
std::string(e.what()));
}
}
{
// string, but length is invalid
try {
std::string src = "x:abc";
bencode2::decode(src.begin(), src.end());
CPPUNIT_FAIL("exception must be thrown.");
} catch(RecoverableException& e) {
CPPUNIT_ASSERT_EQUAL(std::string("Bencode decoding failed:"
" A positive integer expected"
" but none found."),
std::string(e.what()));
}
}
{
// string with minus length
std::string src = "-1:a";
try {
bencode2::decode(src.begin(), src.end());
CPPUNIT_FAIL("exception must be thrown.");
} catch(RecoverableException& e) {
CPPUNIT_ASSERT_EQUAL(std::string("Bencode decoding failed:"
" A positive integer expected"
" but none found."),
std::string(e.what()));
}
}
{
// empty encoded data
std::string src = "";
CPPUNIT_ASSERT(!bencode2::decode(src.begin(), src.end()));
}
{
// ignore trailing garbage at the end of the input.
std::string src = "5:aria2trail";
SharedHandle<ValueBase> s = bencode2::decode(src.begin(), src.end());
CPPUNIT_ASSERT_EQUAL(std::string("aria2"), downcast<String>(s)->s());
}
{
// Get trailing garbage position
std::string src = "5:aria2trail";
size_t end;
SharedHandle<ValueBase> s = bencode2::decode(src.begin(), src.end(), end);
CPPUNIT_ASSERT_EQUAL(std::string("aria2"), downcast<String>(s)->s());
CPPUNIT_ASSERT_EQUAL((size_t)7, end);
}
}
void Bencode2Test::testDecode_overflow()
{
std::string s;
size_t depth = bencode2::MAX_STRUCTURE_DEPTH+1;
for(size_t i = 0; i < depth; ++i) {
s += "l";
}
for(size_t i = 0; i < depth; ++i) {
s += "e";
}
try {
bencode2::decode(s.begin(), s.end());
CPPUNIT_FAIL("exception must be thrown.");
} catch(RecoverableException& e) {
// success
}
}
void Bencode2Test::testEncode()
{
{
Dict dict;
dict["name"] = String::g("aria2");
dict["loc"] = Integer::g(80000);
SharedHandle<List> files = List::g();
files->append(String::g("aria2c"));
dict["files"] = files;
SharedHandle<Dict> attrs = Dict::g();
attrs->put("license", String::g("GPL"));
dict["attrs"] = attrs;
CPPUNIT_ASSERT_EQUAL(std::string("d"
"5:attrsd7:license3:GPLe"
"5:filesl6:aria2ce"
"3:loci80000e"
"4:name5:aria2"
"e"),
bencode2::encode(&dict));
}
}
} // namespace aria2
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