| /* |
| * Copyright (C) 2017 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 <stdlib.h> |
| #include <sys/types.h> |
| |
| #include <gtest/gtest.h> |
| |
| #include "gtest_globals.h" |
| |
| #define BUFFER_SIZE 1024 |
| |
| static int cmp_long(const void *l, const void *r) |
| { |
| |
| return (*(long *)l - *(long *)r); |
| } |
| |
| static int cmp_int(const void *l, const void *r) |
| { |
| |
| return (*(int *)l - *(int *)r); |
| } |
| |
| #ifndef arc4random_uniform |
| static bool seeded; |
| |
| u_int32_t arc4random_uniform(uint32_t upper_bound) |
| { |
| if (!seeded) { |
| srandom((int)time(NULL)); |
| seeded = true; |
| } |
| |
| return (random() % upper_bound); |
| } |
| #endif |
| |
| TEST(qsort_test, long_test) { |
| long buf[BUFFER_SIZE]; |
| long i; |
| |
| /* Initialize buffer with known numbers */ |
| for (i=0; i<BUFFER_SIZE; i++) |
| buf[i] = i; |
| |
| /* Stir 1/4 pairs in the buffer */ |
| for (i=0; i<BUFFER_SIZE/4; i++) { |
| u_int32_t pos1, pos2; |
| long t; |
| |
| pos1 = arc4random_uniform(BUFFER_SIZE); |
| pos2 = arc4random_uniform(BUFFER_SIZE); |
| |
| t = buf[pos1]; |
| buf[pos1] = buf[pos2]; |
| buf[pos2] = t; |
| } |
| |
| /* Sort */ |
| qsort(buf, BUFFER_SIZE, sizeof(buf[0]), &cmp_long); |
| |
| for (i=0; i<BUFFER_SIZE; i++) |
| EXPECT_EQ(i, buf[i]); |
| } |
| |
| TEST(qsort_test, int_test) { |
| int buf[BUFFER_SIZE]; |
| int i; |
| |
| /* Initialize buffer with known numbers */ |
| for (i=0; i<BUFFER_SIZE; i++) |
| buf[i] = i; |
| |
| /* Stir 1/4 pairs in the buffer */ |
| for (i=0; i<BUFFER_SIZE/4; i++) { |
| u_int32_t pos1, pos2; |
| int t; |
| |
| pos1 = arc4random_uniform(BUFFER_SIZE); |
| pos2 = arc4random_uniform(BUFFER_SIZE); |
| |
| t = buf[pos1]; |
| buf[pos1] = buf[pos2]; |
| buf[pos2] = t; |
| } |
| |
| /* Sort */ |
| qsort(buf, BUFFER_SIZE, sizeof(buf[0]), &cmp_int); |
| |
| for (i=0; i<BUFFER_SIZE; i++) |
| EXPECT_EQ(i, buf[i]); |
| } |