stasis-aries-wal/test/lladd/check_logWriter.c

/*---
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---*/

#include <config.h>
#include <check.h>

#include <lladd/logger/logEntry.h>
#include <lladd/logger/logHandle.h>
#include <lladd/transactional.h>

#define LOG_NAME   "check_logWriter.log"

static void setup_log() {
  int i;
  lsn_t prevLSN = -1;
  int xid = 100;
  deleteLogWriter();
  openLogWriter();
  
  for(i = 0 ; i < 1000; i++) {
    LogEntry * e = allocCommonLogEntry(prevLSN, xid, XBEGIN);
    LogEntry * f;
    recordid rid;
    byte * args = (byte*)"Test 123.";
    size_t args_size = 10;  /* Including null */
    unsigned long preImage = 42;

    rid.page = 0;
    rid.slot = 0;
    rid.size = sizeof(unsigned long);

    writeLogEntry(e);
    prevLSN = e->LSN;
    
    f = readLSNEntry(prevLSN);
    fail_unless(sizeofLogEntry(e) == sizeofLogEntry(f), "Log entry changed size!!");
    fail_unless(0 == memcmp(e,f,sizeofLogEntry(e)), "Log entries did not agree!!");

    free (e);
    free (f);

    e = allocUpdateLogEntry(prevLSN, xid, 1, rid, args, args_size, (byte*) &preImage);
    writeLogEntry(e);
    prevLSN = e->prevLSN;
    f = allocCLRLogEntry(100, 1, 200, rid, prevLSN);

    prevLSN = f->prevLSN; 
    
    writeLogEntry(f);
    free (e);
    free (f);
  }
}
/**
   @test 

   Quick test of log writer and log handler.  Not very extensive.
   Just writes out 3000 log entries, checks that 1000 of them make
   sense, and then closes, opens and iterates over the resulting log
   file to make sure that it contains 3000 entries, and none of its
   builtin assertions fail.

   In particular, logWriter checks to make sure that each log entry's
   size matches the size that it recorded before the logEntry.  Also,
   when checking the 1000 of 3000 entries, this test uses
   readLSNEntry, which tests the logWriter's ability to succesfully
   manipulate LSN's.

   @todo Test logHandle more thoroughly. (Still need to test the guard mechanism.)

*/
START_TEST(logWriterTest)
{
  LogEntry * e;
  LogHandle h;
  int i = 0;
  setup_log();
  syncLog();
  closeLogWriter();

  openLogWriter();

  
  h = getLogHandle();
  /*  readLSNEntry(sizeof(lsn_t)); */

  while((e = nextInLog(&h))) {
    i++;
  }


  fail_unless(i = 3000, "Wrong number of log entries!");

  deleteLogWriter();


}
END_TEST

/** 
    @test
    Checks for a bug ecountered during devlopment.  What happens when
    previousInTransaction is called immediately after the handle is
    allocated? */

START_TEST(logHandleColdReverseIterator) {
  LogEntry * e;
  LogHandle lh = getLogHandle();
  int i = 0;
  setup_log();


  while(((e = nextInLog(&lh)) && (i < 100)) ) {
    i++;
  }
  
  i = 0;
  lh = getLogHandle(e->LSN);

  while((e = previousInTransaction(&lh))) {
    i++;
  }
  /*  printf("i = %d\n", i); */
  fail_unless( i == 1 , NULL);  /* The 1 is because we immediately hit a clr that goes to the beginning of the log... */

 deleteLogWriter();

}
END_TEST

Suite * check_suite(void) {
  Suite *s = suite_create("logWriter");
  /* Begin a new test */
  TCase *tc = tcase_create("writeNew");

  /* Sub tests are added, one per line, here */

  tcase_add_test(tc, logWriterTest);
  tcase_add_test(tc, logHandleColdReverseIterator);

  /* --------------------------------------------- */

  suite_add_tcase(s, tc);
  return s;
}

#include "../check_setup.h"