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/*
* Copyright 2011 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "Test.h"
#include "SkRandom.h"
#include "SkTSort.h"
extern "C" {
static int compare_int(const void* a, const void* b) {
return *(const int*)a - *(const int*)b;
}
}
static void rand_array(SkMWCRandom& rand, int array[], int n) {
for (int j = 0; j < n; j++) {
array[j] = rand.nextS() & 0xFF;
}
}
static void check_sort(skiatest::Reporter* reporter, const char label[],
const int array[], const int reference[], int n) {
for (int j = 0; j < n; ++j) {
if (array[j] != reference[j]) {
SkString str;
str.printf("%sSort [%d] failed %d %d", label, n, array[j], reference[j]);
reporter->reportFailed(str);
}
}
}
static void TestSort(skiatest::Reporter* reporter) {
/** An array of random numbers to be sorted. */
int randomArray[500];
/** The reference sort of the random numbers. */
int sortedArray[SK_ARRAY_COUNT(randomArray)];
/** The random numbers are copied into this array, sorted by an SkSort,
then this array is compared against the reference sort. */
int workingArray[SK_ARRAY_COUNT(randomArray)];
SkMWCRandom rand;
for (int i = 0; i < 10000; i++) {
int count = rand.nextRangeU(1, SK_ARRAY_COUNT(randomArray));
rand_array(rand, randomArray, count);
// Use qsort as the reference sort.
memcpy(sortedArray, randomArray, sizeof(randomArray));
qsort(sortedArray, count, sizeof(sortedArray[0]), compare_int);
memcpy(workingArray, randomArray, sizeof(randomArray));
SkTHeapSort<int>(workingArray, count);
check_sort(reporter, "Heap", workingArray, sortedArray, count);
memcpy(workingArray, randomArray, sizeof(randomArray));
SkTQSort<int>(workingArray, workingArray + count - 1);
check_sort(reporter, "Quick", workingArray, sortedArray, count);
}
}
// need tests for SkStrSearch
#include "TestClassDef.h"
DEFINE_TESTCLASS("Sort", SortTestClass, TestSort)
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