add tests for MKLMemory class

Author: ndgrigorian

mkl/tests/test_mkl_memory.py

@@ -0,0 +1,141 @@
+# Copyright (c) 2018, Intel Corporation
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are met:
+#
+#     * Redistributions of source code must retain the above copyright notice,
+#       this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above copyright
+#       notice, this list of conditions and the following disclaimer in the
+#       documentation and/or other materials provided with the distribution.
+#     * Neither the name of Intel Corporation nor the names of its contributors
+#       may be used to endorse or promote products derived from this software
+#       without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
+# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+import sys
+
+import pytest
+
+import mkl
+
+
+def test_mkl_memory_create_malloc():
+    nbytes = 1024
+    mem = mkl.MKLMemory(nbytes)
+    assert mem.nbytes == nbytes
+    # default alignment is 64 bytes
+    assert mem.alignment == 64
+
+
+def test_mkl_memory_create_calloc():
+    size = 32
+    num = 32
+    nbytes = num * size
+    # test creating with mkl_calloc
+    mem = mkl.MKLMemory(num, size)
+    assert mem.nbytes == nbytes
+    # default alignment is 64 bytes
+    assert mem.alignment == 64
+
+
+def test_mkl_memory_create_with_malloc_and_alignment():
+    size = 32
+    num = 32
+    nbytes = num * size
+    alignment = 128
+    mem = mkl.MKLMemory(nbytes, alignment=alignment)
+    assert mem.nbytes == nbytes
+    assert mem.alignment == alignment
+
+
+def test_mkl_memory_create_with_calloc_and_alignment():
+    size = 32
+    num = 32
+    nbytes = num * size
+    alignment = 128
+    mem = mkl.MKLMemory(num, size, alignment=alignment)
+    assert mem.nbytes == nbytes
+
+
+def test_mkl_memory_create_from_mkl_memory():
+    mem1 = mkl.MKLMemory(1024)
+    mem2 = mkl.MKLMemory(mem1)
+    assert mem2.nbytes == mem1.nbytes
+
+
+def test_mkl_memory_create_from_mkl_memory_with_alignment():
+    mem1 = mkl.MKLMemory(1024)
+    alignment = 128
+    mem2 = mkl.MKLMemory(mem1, alignment=alignment)
+    assert mem2.nbytes == mem1.nbytes
+    assert mem2.alignment == alignment
+
+
+def test_mkl_memory_propagates_alignment():
+    mem1 = mkl.MKLMemory(1024, alignment=128)
+    mem2 = mkl.MKLMemory(mem1)
+    assert mem2.nbytes == mem1.nbytes
+    assert mem2.alignment == mem1.alignment
+
+
+def test_mkl_memory_properties():
+    nbytes = 1024
+    mem = mkl.MKLMemory(nbytes)
+    assert len(mem) == nbytes
+    assert type(repr(mem)) is str
+    assert type(bytes(mem)) is bytes
+    assert sys.getsizeof(mem) >= nbytes
+
+
+def test_buffer_protocol():
+    mem = mkl.MKLMemory(1024)
+    mv1 = memoryview(mem)
+    assert mv1.nbytes == mem.nbytes
+    mv2 = memoryview(mem)
+    assert mv1 == mv2
+
+
+def test_pickling():
+    import pickle
+
+    mem = mkl.MKLMemory(1024)
+    mv = memoryview(mem)
+    for i in range(len(mem)):
+        mv[i] = (i % 32) + ord("a")
+
+    mem_reconstructed = pickle.loads(pickle.dumps(mem))
+    assert type(mem) is type(mem_reconstructed), "Pickling should preserve type"
+    assert (
+        mem.tobytes() == mem_reconstructed.tobytes()
+    ), "Pickling should preserve buffer content"
+    assert (
+        mem._pointer != mem_reconstructed._pointer
+    ), "Pickling/unpickling should be changing pointer"
+
+
+def test_pickling_with_alignment():
+    import pickle
+
+    mem = mkl.MKLMemory(1024, alignment=128)
+    mem_reconstructed = pickle.loads(pickle.dumps(mem))
+    assert type(mem) is type(mem_reconstructed), "Pickling should preserve type"
+    assert (
+        mem.tobytes() == mem_reconstructed.tobytes()
+    ), "Pickling should preserve buffer content"
+    assert (
+        mem._pointer != mem_reconstructed._pointer
+    ), "Pickling/unpickling should be changing pointer"
+    assert (
+        mem.alignment == mem_reconstructed.alignment
+    ), "Pickling should preserve alignment"