diff options
Diffstat (limited to 'modules/sensors/dynamic_sensor/HidUtils/test/CopyBitsTest.cpp')
-rw-r--r-- | modules/sensors/dynamic_sensor/HidUtils/test/CopyBitsTest.cpp | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/modules/sensors/dynamic_sensor/HidUtils/test/CopyBitsTest.cpp b/modules/sensors/dynamic_sensor/HidUtils/test/CopyBitsTest.cpp new file mode 100644 index 00000000..1b1ca709 --- /dev/null +++ b/modules/sensors/dynamic_sensor/HidUtils/test/CopyBitsTest.cpp @@ -0,0 +1,73 @@ +/* + * Copyright (C) 2021 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * 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. + */ + +#include "HidUtils.h" +#include <gtest/gtest.h> + +using HidUtil::copyBits; + +TEST(CopyBitsTest, CopyBits) { + const struct { + uint32_t src; + uint32_t dst; + int src_bit_offset; + int dst_bit_offset; + int bit_count; + uint32_t expected_dst; + } kTestVectorList[] = { + { 0x00000005, 0x00000000, 0, 0, 8, 0x00000005 }, + { 0x00000005, 0x00000000, 0, 4, 8, 0x00000050 }, + { 0x0000000C, 0x00000020, 0, 4, 8, 0x000000C0 }, + { 0x00000005, 0x0000F02F, 0, 4, 8, 0x0000F05F }, + { 0x12345678, 0x87654321, 5, 11, 17, 0x8D159B21 }, + { 0x12345678, 0x87654321, 11, 5, 17, 0x8748D141 }, + }; + + for (auto test_vector : kTestVectorList) { + uint32_t dst = test_vector.dst; + copyBits(&(test_vector.src), &dst, sizeof(dst), + test_vector.src_bit_offset, test_vector.dst_bit_offset, + test_vector.bit_count); + EXPECT_EQ(test_vector.expected_dst, dst); + } +} + +TEST(CopyBitsTest, Overflow) { + const struct { + uint32_t src; + uint32_t dst; + unsigned int src_bit_offset; + unsigned int dst_bit_offset; + unsigned int bit_count; + uint32_t expected_dst; + } kTestVectorList[] = { + { 0x000000FF, 0x00000000, 0, 0, 8, 0x000000FF }, + { 0x000000FF, 0x00000000, 0, 24, 8, 0xFF000000 }, + { 0x000000FF, 0x00000000, 0, 25, 8, 0x00000000 }, + { 0x000000FF, 0x00000000, 0, 32, 8, 0x00000000 }, + { 0x000000FF, 0x00000000, 0, UINT_MAX, 8, 0x00000000 }, + { 0x000000FF, 0x00000000, 0, 8, UINT_MAX, 0x00000000 }, + }; + + for (auto test_vector : kTestVectorList) { + uint32_t dst = test_vector.dst; + copyBits(&(test_vector.src), &dst, sizeof(dst), + test_vector.src_bit_offset, test_vector.dst_bit_offset, + test_vector.bit_count); + EXPECT_EQ(test_vector.expected_dst, dst); + } +} + |