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Merge #17220: tests: Add unit testing for the CompressScript function

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b05ec410f2d9f209796a5df31860e23efd729dfe Add unit testing for the CompressScript functions (marcaiaf)

Pull request description:

  Salvaging #15104 which adds unit tests for CompressScript function in `compressor.cpp`

  Tested following cases for the CScript:
    - CKeyID
    - CScriptID
    - Uncompressed CPubKey (of size: 65)
    - Compressed CPubKey (of size: 32)

ACKs for top commit:
  theStack:
    ACK b05ec410f2

Tree-SHA512: 7e23ace39383122802dfe5f7d38190d772f5db4045a67b7a9bd4c06797a17e0cdc41d6fac92d448057eb7df50172155dc824587c16c68c79fd1a4de37b772001
This commit is contained in:
Wladimir J. van der Laan 2019-10-25 13:55:39 +02:00 committed by Pasta
parent 29f354e8ec
commit 38a0fbee54
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1 changed files with 73 additions and 0 deletions
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73
src/test/compress_tests.cpp
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@ -5,6 +5,7 @@
#include <compressor.h>
#include <util/system.h>
#include <test/setup_common.h>
#include <script/standard.h>
#include <stdint.h>
@ -62,4 +63,76 @@ BOOST_AUTO_TEST_CASE(compress_amounts)
BOOST_CHECK(TestDecode(i));
}
BOOST_AUTO_TEST_CASE(compress_script_to_ckey_id)
{
// case CKeyID
CKey key;
key.MakeNewKey(true);
CPubKey pubkey = key.GetPubKey();
CScript script = CScript() << OP_DUP << OP_HASH160 << ToByteVector(pubkey.GetID()) << OP_EQUALVERIFY << OP_CHECKSIG;
BOOST_CHECK_EQUAL(script.size(), 25);
std::vector<unsigned char> out;
bool done = CompressScript(script, out);
BOOST_CHECK_EQUAL(done, true);
// Check compressed script
BOOST_CHECK_EQUAL(out.size(), 21);
BOOST_CHECK_EQUAL(out[0], 0x00);
BOOST_CHECK_EQUAL(memcmp(&out[1], &script[3], 20), 0); // compare the 20 relevant chars of the CKeyId in the script
}
BOOST_AUTO_TEST_CASE(compress_script_to_cscript_id)
{
// case CScriptID
CScript script, redeemScript;
script << OP_HASH160 << ToByteVector(CScriptID(redeemScript)) << OP_EQUAL;
BOOST_CHECK_EQUAL(script.size(), 23);
std::vector<unsigned char> out;
bool done = CompressScript(script, out);
BOOST_CHECK_EQUAL(done, true);
// Check compressed script
BOOST_CHECK_EQUAL(out.size(), 21);
BOOST_CHECK_EQUAL(out[0], 0x01);
BOOST_CHECK_EQUAL(memcmp(&out[1], &script[2], 20), 0); // compare the 20 relevant chars of the CScriptId in the script
}
BOOST_AUTO_TEST_CASE(compress_script_to_compressed_pubkey_id)
{
CKey key;
key.MakeNewKey(true); // case compressed PubKeyID
CScript script = CScript() << ToByteVector(key.GetPubKey()) << OP_CHECKSIG; // COMPRESSED_PUBLIC_KEY_SIZE (33)
BOOST_CHECK_EQUAL(script.size(), 35);
std::vector<unsigned char> out;
bool done = CompressScript(script, out);
BOOST_CHECK_EQUAL(done, true);
// Check compressed script
BOOST_CHECK_EQUAL(out.size(), 33);
BOOST_CHECK_EQUAL(memcmp(&out[0], &script[1], 1), 0);
BOOST_CHECK_EQUAL(memcmp(&out[1], &script[2], 32), 0); // compare the 32 chars of the compressed CPubKey
}
BOOST_AUTO_TEST_CASE(compress_script_to_uncompressed_pubkey_id)
{
CKey key;
key.MakeNewKey(false); // case uncompressed PubKeyID
CScript script = CScript() << ToByteVector(key.GetPubKey()) << OP_CHECKSIG; // PUBLIC_KEY_SIZE (65)
BOOST_CHECK_EQUAL(script.size(), 67); // 1 char code + 65 char pubkey + OP_CHECKSIG
std::vector<unsigned char> out;
bool done = CompressScript(script, out);
BOOST_CHECK_EQUAL(done, true);
// Check compressed script
BOOST_CHECK_EQUAL(out.size(), 33);
BOOST_CHECK_EQUAL(memcmp(&out[1], &script[2], 32), 0); // first 32 chars of CPubKey are copied into out[1:]
BOOST_CHECK_EQUAL(out[0], 0x04 | (script[65] & 0x01)); // least significant bit (lsb) of last char of pubkey is mapped into out[0]
}
BOOST_AUTO_TEST_SUITE_END()