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$ la e Ji@pe1h
&ÿ ' #include
#include
#include
#include
#include
using namespace std;
using namespace Passenger;
namespace tut {
struct CachedFileStatTest: public TestBase {
struct stat buf;
~CachedFileStatTest() {
SystemTime::release();
unlink("test.txt");
unlink("test2.txt");
unlink("test3.txt");
unlink("test4.txt");
}
};
DEFINE_TEST_GROUP(CachedFileStatTest);
static void touch(const char *filename, time_t timestamp = 0) {
FILE *f = fopen(filename, "w");
fprintf(f, "hi");
fclose(f);
if (timestamp != 0) {
struct utimbuf buf;
buf.actime = timestamp;
buf.modtime = timestamp;
utime(filename, &buf);
}
}
/************ Tests involving a single file ************/
TEST_METHOD(1) {
// Statting a new file works.
touch("test.txt");
CachedFileStat stat(1);
ensure_equals(stat.stat("test.txt", &buf, 1), 0);
ensure_equals((long) buf.st_size, (long) 2);
}
TEST_METHOD(2) {
// It does not re-stat an existing file until the cache has expired.
CachedFileStat stat(1);
SystemTime::force(5);
touch("test.txt", 1);
ensure_equals("1st stat succceeded",
stat.stat("test.txt", &buf, 1),
0);
touch("test.txt", 1000);
ensure_equals("2nd stat succceeded",
stat.stat("test.txt", &buf, 1),
0);
ensure_equals("Cached value was used",
buf.st_mtime,
(time_t) 1);
SystemTime::force(6);
ensure_equals("3rd stat succceeded",
stat.stat("test.txt", &buf, 1),
0);
ensure_equals("Cache has been invalidated",
buf.st_mtime,
(time_t) 1000);
}
TEST_METHOD(3) {
// Statting a nonexistant file returns an error.
CachedFileStat stat(1);
ensure_equals(stat.stat("test.txt", &buf, 1), -1);
ensure_equals("It sets errno appropriately", errno, ENOENT);
}
TEST_METHOD(4) {
// It does not re-stat a previously nonexistant file until
// the cache has expired.
SystemTime::force(5);
CachedFileStat stat(1);
ensure_equals("1st stat failed",
stat.stat("test.txt", &buf, 1),
-1);
ensure_equals("It sets errno appropriately", errno, ENOENT);
errno = EEXIST;
touch("test.txt", 1000);
ensure_equals("2nd stat failed",
stat.stat("test.txt", &buf, 1),
-1);
ensure_equals("It sets errno appropriately", errno, ENOENT);
ensure_equals("Cached value was used",
buf.st_mtime,
(time_t) 0);
SystemTime::force(6);
ensure_equals("3rd stat succeeded",
stat.stat("test.txt", &buf, 1),
0);
ensure_equals("Cache has been invalidated",
buf.st_mtime,
(time_t) 1000);
unlink("test.txt");
ensure_equals("4th stat succeeded even though file was unlinked",
stat.stat("test.txt", &buf, 1),
0);
ensure_equals("Cached value was used",
buf.st_mtime,
(time_t) 1000);
}
TEST_METHOD(5) {
// If the throttling rate is 0 then the cache will be bypassed.
SystemTime::force(5);
CachedFileStat stat(2);
ensure_equals("1st stat returns -1",
stat.stat("test.txt", &buf, 0),
-1);
touch("test.txt");
ensure_equals("2nd stat did not go through the cache",
stat.stat("test.txt", &buf, 0),
0);
}
/************ Tests involving multiple files ************/
TEST_METHOD(10) {
// Throttling in combination with multiple files works.
CachedFileStat stat(2);
SystemTime::force(5);
// Touch and stat test.txt. The next stat should return
// the old info.
touch("test.txt", 10);
ensure_equals(
stat.stat("test.txt", &buf, 1),
0);
ensure_equals(buf.st_mtime, (time_t) 10);
touch("test.txt", 20);
ensure_equals(
stat.stat("test.txt", &buf, 1),
0);
ensure_equals(buf.st_