From 7daffc6a90a797ce7c365a893a31a31b0206985c Mon Sep 17 00:00:00 2001
From: Gillian Chu <gillianchu@Gillians-MacBook-Pro.local>
Date: Wed, 27 May 2020 10:05:34 -0700
Subject: [test] CScriptNum Decode Check as Unit Tests
Migrates the CScriptNum decode tests into a unit test, and moved some
changes made in #14816. Made possible by the integration of
test_framework unit testing in #18576. Further extends the original
test with larger ints, similar to the scriptnum_tests.cpp file. Adds
test to blocktools.py testing fn create_coinbase() with CScriptNum
decode.
---
test/functional/test_framework/script.py | 6 ++++++
1 file changed, 6 insertions(+)
(limited to 'test/functional/test_framework/script.py')
diff --git a/test/functional/test_framework/script.py b/test/functional/test_framework/script.py
index 9102266456..fd5c97f48b 100644
--- a/test/functional/test_framework/script.py
+++ b/test/functional/test_framework/script.py
@@ -731,3 +731,9 @@ class TestFrameworkScript(unittest.TestCase):
self.assertEqual(bn2vch(0xFFFFFFFF), bytes([0xFF, 0xFF, 0xFF, 0xFF, 0x00]))
self.assertEqual(bn2vch(123456789), bytes([0x15, 0xCD, 0x5B, 0x07]))
self.assertEqual(bn2vch(-54321), bytes([0x31, 0xD4, 0x80]))
+
+ def test_cscriptnum_encoding(self):
+ # round-trip negative and multi-byte CScriptNums
+ values = [0, 1, -1, -2, 127, 128, -255, 256, (1 << 15) - 1, -(1 << 16), (1 << 24) - 1, (1 << 31), 1 - (1 << 32), 1 << 40, 1500, -1500]
+ for value in values:
+ self.assertEqual(CScriptNum.decode(CScriptNum.encode(CScriptNum(value))), value)
--
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