[t:4246] #4246 Add test of serialization and deserialization of certain fields in the brt header.

git-svn-id: file:///svn/toku/tokudb@38120 c7de825b-a66e-492c-adef-691d508d4ae1

newbrt/tests/brt-test-header.c

+/* -*- mode: C; c-basic-offset: 4 -*- */
+#ident "$Id$"
+#ident "Copyright (c) 2007, 2008 Tokutek Inc.  All rights reserved."
+
+#include "includes.h"
+#include "test.h"
+
+// The purpose of this test is to verify that certain information in the 
+// brt_header is properly serialized and deserialized. 
+
+
+static TOKUTXN const null_txn = 0;
+static DB * const null_db = 0;
+
+static void test_header (void) {
+    BRT t;
+    int r;
+    CACHETABLE ct;
+    char fname[]= __FILE__ ".brt";
+
+    // First create dictionary
+    r = toku_brt_create_cachetable(&ct, 0, ZERO_LSN, NULL_LOGGER);
+    assert(r==0);
+    unlink(fname);
+    r = toku_open_brt(fname, 1, &t, 1024, 256, ct, null_txn, toku_builtin_compare_fun, null_db);
+    assert(r==0);
+    // now insert some info into the header
+    struct brt_header *h = t->h;
+    h->dirty = 1;
+    h->layout_version_original = 13;
+    h->layout_version_read_from_disk = 14;
+    h->build_id_original = 1234;
+    h->num_blocks_to_upgrade_13 = 1013;
+    h->num_blocks_to_upgrade_14 = 1014;
+    h->in_memory_stats          = (STAT64INFO_S) {10, 11};
+    h->on_disk_stats            = (STAT64INFO_S) {20, 21};
+    h->checkpoint_staging_stats = (STAT64INFO_S) {30, 31};
+    r = toku_close_brt(t, 0);     assert(r==0);
+    r = toku_cachetable_close(&ct);
+    assert(r==0);
+
+    // Now read dictionary back into memory and examine some header fields
+    r = toku_brt_create_cachetable(&ct, 0, ZERO_LSN, NULL_LOGGER);
+    assert(r==0);
+    r = toku_open_brt(fname, 0, &t, 1024, 256, ct, null_txn, toku_builtin_compare_fun, null_db);
+    assert(r==0);
+
+    h = t->h;
+    STAT64INFO_S expected_stats = {20, 21};  // on checkpoint, on_disk_stats copied to checkpoint_staging_stats 
+    assert(h->layout_version == BRT_LAYOUT_VERSION);
+    assert(h->layout_version_original == 13);
+    assert(h->layout_version_read_from_disk == BRT_LAYOUT_VERSION);
+    assert(h->build_id_original == 1234);
+    assert(h->num_blocks_to_upgrade_13 == 1013);
+    assert(h->num_blocks_to_upgrade_14 == 1014);
+    assert(h->in_memory_stats.numrows == expected_stats.numrows);
+    assert(h->on_disk_stats.numbytes  == expected_stats.numbytes);
+    r = toku_close_brt(t, 0);     assert(r==0);
+    r = toku_cachetable_close(&ct);
+    assert(r==0);
+
+
+    
+}
+
+int
+test_main (int argc , const char *argv[]) {
+    default_parse_args(argc, argv);
+    test_header();
+    test_header(); /* Make sure it works twice. Redundant, but it's a very cheap test. */
+    if (verbose) printf("test_header ok\n");
+    return 0;
+}