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#include <stdio.h>
#include <string.h>
#include <assert.h>
#include <unistd.h>
#ifdef USE_HOST_LIBC
#define TEST_FILE "popen-host-libc.tmp"
#else
#define TEST_FILE "popen.tmp"
#endif
#define TEST_STRING1 "the quick brown fox jumps over the lazy dog"
#define TEST_STRING1_LEN 43
#define TEST_STRING2 "Lorem ipsum dolor sit amet, consectetur adipiscing elit"
#define TEST_STRING2_LEN 55
int main() {
// Test reading
FILE *f1 = popen("echo -n '" TEST_STRING1 "'", "r");
assert(f1);
char buf1[TEST_STRING1_LEN];
assert(fread(buf1, 1, TEST_STRING1_LEN, f1) == TEST_STRING1_LEN);
assert(memcmp(buf1, TEST_STRING1, TEST_STRING1_LEN) == 0);
pclose(f1);
// Test writing
FILE *f2 = popen("cat - > " TEST_FILE, "w");
assert(f2);
assert(fwrite(TEST_STRING2, 1, TEST_STRING2_LEN, f2) == TEST_STRING2_LEN);
pclose(f2);
// Read test file back
FILE *test_file = fopen(TEST_FILE, "r");
assert(test_file);
char buf2[TEST_STRING2_LEN];
assert(fread(buf2, 1, TEST_STRING2_LEN, test_file) == TEST_STRING2_LEN);
assert(memcmp(buf2, TEST_STRING2, TEST_STRING2_LEN) == 0);
fclose(test_file);
assert(unlink(TEST_FILE) == 0);
return 0;
}
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