add pytest allocator (#2584)

python/tests/test_allocator.py

@@ -0,0 +1,37 @@
+# Tencent is pleased to support the open source community by making ncnn available.
+#
+# Copyright (C) 2020 THL A29 Limited, a Tencent company. All rights reserved.
+#
+# Licensed under the BSD 3-Clause License (the "License"); you may not use this file except
+# in compliance with the License. You may obtain a copy of the License at
+#
+# https://opensource.org/licenses/BSD-3-Clause
+#
+# Unless required by applicable law or agreed to in writing, software distributed
+# under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
+# CONDITIONS OF ANY KIND, either express or implied. See the License for the
+# specific language governing permissions and limitations under the License.
+
+import pytest
+
+import ncnn
+
+
+def test_pool_allocator():
+    pa = ncnn.PoolAllocator()
+    assert pa is not None
+    pa.set_size_compare_ratio(0.5)
+    buf = pa.fastMalloc(10 * 1024)
+    assert buf is not None
+    pa.fastFree(buf)
+    pa.clear()
+
+
+def test_unlocked_pool_allocator():
+    upa = ncnn.UnlockedPoolAllocator()
+    assert upa is not None
+    upa.set_size_compare_ratio(0.5)
+    buf = upa.fastMalloc(10 * 1024)
+    assert buf is not None
+    upa.fastFree(buf)
+    upa.clear()