1 /* 2 * Copyright (C) 2015 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #include "BitUtils.h" 18 19 #include <gtest/gtest.h> 20 21 namespace android { 22 namespace tests { 23 24 TEST(BitInRange, testInvalidRange) { 25 uint8_t arr[2] = { 0xff, 0xff }; 26 EXPECT_FALSE(testBitInRange(arr, 0, 0)); 27 EXPECT_FALSE(testBitInRange(arr, 1, 0)); 28 } 29 30 TEST(BitInRange, testNoBits) { 31 uint8_t arr[1]; 32 arr[0] = 0; 33 EXPECT_FALSE(testBitInRange(arr, 0, 8)); 34 } 35 36 TEST(BitInRange, testOneBit) { 37 uint8_t arr[1]; 38 for (int i = 0; i < 8; ++i) { 39 arr[0] = 1 << i; 40 EXPECT_TRUE(testBitInRange(arr, 0, 8)); 41 } 42 } 43 44 TEST(BitInRange, testZeroStart) { 45 uint8_t arr[1] = { 0x10 }; 46 for (int i = 0; i < 5; ++i) { 47 EXPECT_FALSE(testBitInRange(arr, 0, i)); 48 } 49 for (int i = 5; i <= 8; ++i) { 50 EXPECT_TRUE(testBitInRange(arr, 0, i)); 51 } 52 } 53 54 TEST(BitInRange, testByteBoundaryEnd) { 55 uint8_t arr[1] = { 0x10 }; 56 for (int i = 0; i < 5; ++i) { 57 EXPECT_TRUE(testBitInRange(arr, i, 8)); 58 } 59 for (int i = 5; i <= 8; ++i) { 60 EXPECT_FALSE(testBitInRange(arr, i, 8)); 61 } 62 } 63 64 TEST(BitInRange, testMultiByteArray) { 65 // bits set: 11 and 16 66 uint8_t arr[3] = { 0x00, 0x08, 0x01 }; 67 for (int start = 0; start < 24; ++start) { 68 for (int end = start + 1; end <= 24; ++end) { 69 if (start > 16 || end <= 11 || (start > 11 && end <= 16)) { 70 EXPECT_FALSE(testBitInRange(arr, start, end)) 71 << "range = (" << start << ", " << end << ")"; 72 } else { 73 EXPECT_TRUE(testBitInRange(arr, start, end)) 74 << "range = (" << start << ", " << end << ")"; 75 } 76 } 77 } 78 } 79 80 } // namespace tests 81 } // namespace android 82
