Make a test for #101. Addresses #101.

git-svn-id: file:///svn/tokudb@856 c7de825b-a66e-492c-adef-691d508d4ae1

src/tests/test_get_zeroed_dbt.c

+/* Test to see if DB->get works on a zeroed DBT. */
+
+#include <db.h>
+#include <string.h>
+#include <stdlib.h>
+#include <assert.h>
+#include <sys/stat.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;
+}
+
+void test_get (int dup_mode) {
+    DB_ENV * const null_env = 0;
+    DB_TXN * const null_txn = 0;
+    DB *db;
+    DBT key,data;
+    int fnamelen = sizeof(DIR) + 30;
+    char fname[fnamelen];
+    int r;
+    snprintf(fname, fnamelen, "%s/test%d.db", DIR, dup_mode);
+    r = db_create (&db, null_env, 0);                                        assert(r == 0);
+    r = db->set_flags(db, dup_mode);                                         assert(r == 0);
+    r = db->open(db, null_txn, fname, "main", DB_BTREE, DB_CREATE, 0666);    assert(r == 0);
+    dbt_init(&key, "a", 2);
+    r = db->put(db, null_txn, &key, dbt_init(&data, "b", 2), 0);             assert(r==0);
+    memset(&data, 0, sizeof(data));
+    r = db->get(db, null_txn, &key, &data, 0);                               assert(r == 0);
+    assert(strcmp(data.data, "b")==0);
+}
+
+int main (int argc, const char *argv[]) {
+    parse_args(argc, argv);
+    system("rm -rf " DIR);
+    mkdir(DIR, 0777);
+
+    test_get(0);
+    test_get(DB_DUP + DB_DUPSORT);
+    return 0;
+}