test cursor DB_CURRENT. addresses #48

git-svn-id: file:///svn/tokudb@894 c7de825b-a66e-492c-adef-691d508d4ae1

src/tests/test_cursor_db_current.c

+/* -*- mode: C; c-basic-offset: 4 -*- */
+#ident "Copyright (c) 2007 Tokutek Inc.  All rights reserved."
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <assert.h>
+#include <unistd.h>
+#include <string.h>
+#include <errno.h>
+#include <sys/stat.h>
+#include <arpa/inet.h>
+#include <db.h>
+
+#include "test.h"
+
+DBT *dbt_init(DBT *dbt, void *data, u_int32_t size) {
+    memset(dbt, 0, sizeof *dbt);
+    dbt->data = data;
+    dbt->size = size;
+    return dbt;
+}
+
+DBT *dbt_init_malloc(DBT *dbt) {
+    memset(dbt, 0, sizeof *dbt);
+    dbt->flags = DB_DBT_MALLOC;
+    return dbt;
+}
+
+void db_put(DB *db, int k, int v) {
+    DB_TXN * const null_txn = 0;
+    DBT key, val;
+    int r = db->put(db, null_txn, dbt_init(&key, &k, sizeof k), dbt_init(&val, &v, sizeof v), 0);
+    assert(r == 0);
+}
+
+void test_db_current() {
+    if (verbose) printf("test_db_current\n");
+
+    DB_ENV * const null_env = 0;
+    DB *db;
+    DB_TXN * const null_txn = 0;
+    const char * const fname = DIR "/" "test.db.current.brt";
+    int r;
+
+    unlink(fname);
+
+    /* create the dup database file */
+    r = db_create(&db, null_env, 0);
+    assert(r == 0);
+    r = db->open(db, null_txn, fname, "main", DB_BTREE, DB_CREATE, 0666);
+    assert(r == 0);
+    
+    /* insert <1,1> */
+    int k = 1, v = 1;
+    db_put(db, k, v);
+    
+    DBC *cursor;
+
+    r = db->cursor(db, null_txn, &cursor, 0);
+    assert(r == 0);
+
+    DBT key, data; int kk, vv;
+
+    r = cursor->c_get(cursor, dbt_init_malloc(&key), dbt_init_malloc(&data), DB_CURRENT);
+    assert(r == EINVAL);
+
+    r = cursor->c_get(cursor, dbt_init_malloc(&key), dbt_init_malloc(&data), DB_FIRST);
+    assert(r == 0);
+    assert(key.size == sizeof kk);
+    memcpy(&kk, key.data, sizeof kk);
+    assert(kk == 1);
+    assert(data.size == sizeof vv);
+    memcpy(&vv, data.data, data.size);
+    assert(vv == 1);
+    free(key.data); free(data.data);
+
+    r = cursor->c_get(cursor, dbt_init_malloc(&key), dbt_init_malloc(&data), DB_CURRENT);
+    assert(r == 0);
+    assert(key.size == sizeof kk);
+    memcpy(&kk, key.data, sizeof kk);
+    assert(kk == 1);
+    assert(data.size == sizeof vv);
+    memcpy(&vv, data.data, data.size);
+    assert(vv == 1);
+    free(key.data); free(data.data);
+
+    r = cursor->c_close(cursor);
+    assert(r == 0);
+
+    r = db->close(db, 0);
+    assert(r == 0);
+}
+
+int main(int argc, const char *argv[]) {
+    parse_args(argc, argv);
+  
+    system("rm -rf " DIR);
+    mkdir(DIR, 0777);
+
+    test_db_current();
+
+    return 0;
+}