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#!/usr/bin/env python3
# Copyright 2019 the V8 project authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
import os
import sys
import tempfile
import unittest
# Needed because the test runner contains relative imports.
TOOLS_PATH = os.path.dirname(
os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
sys.path.append(TOOLS_PATH)
from testrunner.testproc.shard import radix_hash
class TestRadixHashing(unittest.TestCase):
def test_hash_character_by_radix(self):
self.assertEqual(97, radix_hash(capacity=2**32, key="a"))
def test_hash_character_by_radix_with_capacity(self):
self.assertEqual(6, radix_hash(capacity=7, key="a"))
def test_hash_string(self):
self.assertEqual(6, radix_hash(capacity=7, key="ab"))
def test_hash_test_id(self):
self.assertEqual(
5,
radix_hash(
capacity=7, key="test262/Map/class-private-method-Variant-0-1"))
def test_hash_boundaries(self):
total_variants = 5
cases = []
for case in [
"test262/Map/class-private-method",
"test262/Map/class-public-method",
"test262/Map/object-retrieval",
"test262/Map/object-deletion",
"test262/Map/object-creation",
"test262/Map/garbage-collection",
]:
for variant_index in range(total_variants):
cases.append("%s-Variant-%d" % (case, variant_index))
for case in cases:
self.assertTrue(0 <= radix_hash(capacity=7, key=case) < 7)
if __name__ == '__main__':
unittest.main()
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