#3293 test case for a checkpoint that spans multiple log files refs[t:3293]

git-svn-id: file:///svn/toku/tokudb@28484 c7de825b-a66e-492c-adef-691d508d4ae1

newbrt/tests/log-test-maybe-trim.c

+/* -*- mode: C; c-basic-offset: 4 -*- */
+#ident "Copyright (c) 2011 Tokutek Inc.  All rights reserved."
+
+// verify that the log file trimmer does not delete the log file containing the
+// begin checkpoint when the checkpoint log entries span multiple log files.
+
+#include "test.h"
+#include "includes.h"
+
+#define dname __FILE__ ".dir"
+#define rmrf "rm -rf " dname "/"
+
+int
+test_main (int argc __attribute__((__unused__)),
+	  const char *argv[] __attribute__((__unused__))) {
+    int r;
+    r = system(rmrf); CKERR(r);
+    r = toku_os_mkdir(dname, S_IRWXU);    assert(r==0);
+
+    TOKULOGGER logger;
+    r = toku_logger_create(&logger); assert(r == 0);
+    r = toku_logger_set_lg_max(logger, 32); assert(r == 0);
+    r = toku_logger_open(dname, logger); assert(r == 0);
+    BYTESTRING hello = (BYTESTRING) { 5, "hello"};
+    LSN comment_lsn;
+    r = toku_log_comment(logger, &comment_lsn, TRUE, 0, hello);
+    LSN begin_lsn;
+    r = toku_log_begin_checkpoint(logger, &begin_lsn, TRUE, 0); assert(r == 0);
+    LSN end_lsn;
+    r = toku_log_end_checkpoint(logger, &end_lsn, TRUE, begin_lsn.lsn, 0, 0, 0); assert(r == 0);
+    r = toku_logger_maybe_trim_log(logger, begin_lsn); assert(r == 0);
+    r = toku_logger_close(&logger); assert(r == 0);
+
+    // verify all log entries prior the begin checkpoint are trimmed
+    TOKULOGCURSOR lc = NULL;
+    r = toku_logcursor_create(&lc, dname); assert(r == 0);
+    struct log_entry *le = NULL;
+    r = toku_logcursor_first(lc, &le); assert(r == 0);
+    assert(le->cmd == LT_begin_checkpoint);
+    r = toku_logcursor_destroy(&lc); assert(r == 0);
+    
+    r = system(rmrf); CKERR(r);
+    return 0;
+}