1 2 /* 3 * Copyright 2011 Google Inc. 4 * 5 * Use of this source code is governed by a BSD-style license that can be 6 * found in the LICENSE file. 7 */ 8 #include "Test.h" 9 #include "SkRandom.h" 10 #include "SkTSort.h" 11 12 extern "C" { 13 static int compare_int(const void* a, const void* b) { 14 return *(const int*)a - *(const int*)b; 15 } 16 } 17 18 static void rand_array(SkRandom& rand, int array[], int n) { 19 for (int j = 0; j < n; j++) { 20 array[j] = rand.nextS() & 0xFF; 21 } 22 } 23 24 static void check_sort(skiatest::Reporter* reporter, const char label[], 25 const int array[], const int reference[], int n) { 26 for (int j = 0; j < n; ++j) { 27 if (array[j] != reference[j]) { 28 SkString str; 29 str.printf("%sSort [%d] failed %d %d", label, n, array[j], reference[j]); 30 reporter->reportFailed(str); 31 } 32 } 33 } 34 35 static void TestSort(skiatest::Reporter* reporter) { 36 /** An array of random numbers to be sorted. */ 37 int randomArray[500]; 38 /** The reference sort of the random numbers. */ 39 int sortedArray[SK_ARRAY_COUNT(randomArray)]; 40 /** The random numbers are copied into this array, sorted by an SkSort, 41 then this array is compared against the reference sort. */ 42 int workingArray[SK_ARRAY_COUNT(randomArray)]; 43 SkRandom rand; 44 45 for (int i = 0; i < 10000; i++) { 46 int count = rand.nextRangeU(1, SK_ARRAY_COUNT(randomArray)); 47 rand_array(rand, randomArray, count); 48 49 // Use qsort as the reference sort. 50 memcpy(sortedArray, randomArray, sizeof(randomArray)); 51 qsort(sortedArray, count, sizeof(sortedArray[0]), compare_int); 52 53 memcpy(workingArray, randomArray, sizeof(randomArray)); 54 SkTHeapSort<int>(workingArray, count); 55 check_sort(reporter, "Heap", workingArray, sortedArray, count); 56 57 memcpy(workingArray, randomArray, sizeof(randomArray)); 58 SkTQSort<int>(workingArray, workingArray + count - 1); 59 check_sort(reporter, "Quick", workingArray, sortedArray, count); 60 } 61 } 62 63 // need tests for SkStrSearch 64 65 #include "TestClassDef.h" 66 DEFINE_TESTCLASS("Sort", SortTestClass, TestSort) 67
