addresses #45

git-svn-id: file:///svn/tokudb@785 c7de825b-a66e-492c-adef-691d508d4ae1

src/tests/test_db_delete.c

+#include <stdio.h>
+#include <stdlib.h>
+#include <assert.h>
+#include <unistd.h>
+#include <string.h>
+#include <arpa/inet.h>
+#include <sys/stat.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) {
+    DBT key, val;
+    int r = db->put(db, 0, dbt_init(&key, &k, sizeof k), dbt_init(&val, &v, sizeof v), 0);
+    assert(r == 0);
+}
+
+void expect_db_del(DB *db, int k, int expectr) {
+    DBT key;
+    int r = db->del(db, 0, dbt_init(&key, &k, sizeof k), 0);
+    assert(r == expectr);
+}
+
+void expect_db_get(DB *db, int k, int expectr) {
+    DBT key, val;
+    int r = db->get(db, 0, dbt_init(&key, &k, sizeof k), dbt_init_malloc(&val), 0);
+    assert(r == expectr);
+}
+
+void test_db_delete(int n, int dup_mode) {
+    if (verbose) printf("test_rand_insert:%d %d\n", n, dup_mode);
+
+    DB_ENV * const null_env = 0;
+    DB *db;
+    DB_TXN * const null_txn = 0;
+    const char * const fname = DIR "/" "test.rand.insert.brt";
+    int r;
+
+    system("rm -rf " DIR);
+    r=mkdir(DIR, 0777); assert(r==0);
+
+    /* create the dup database file */
+    r = db_create(&db, null_env, 0);
+    assert(r == 0);
+    r = db->set_flags(db, dup_mode);
+    assert(r == 0);
+    r = db->set_pagesize(db, 4096);
+    assert(r == 0);
+    r = db->open(db, null_txn, fname, "main", DB_BTREE, DB_CREATE, 0666);
+    assert(r == 0);
+
+    /* insert n/2 <i, i> pairs */
+    int i;
+    for (i=0; i<n/2; i++) 
+        db_put(db, htonl(i), i);
+
+    /* reopen the database to force nonleaf buffering */
+    r = db->close(db, 0);
+    assert(r == 0);
+    r = db_create(&db, null_env, 0);
+    assert(r == 0);
+    r = db->set_flags(db, dup_mode);
+    assert(r == 0);
+    r = db->set_pagesize(db, 4096);
+    assert(r == 0);
+    r = db->open(db, null_txn, fname, "main", DB_BTREE, 0, 0666);
+    assert(r == 0);
+
+    /* insert n/2 <i, i> pairs */
+    for (i=n/2; i<n; i++) 
+        db_put(db, htonl(i), i);
+
+    for (i=0; i<n; i++) {
+        expect_db_del(db, htonl(i), 0);
+
+        expect_db_get(db, htonl(i), DB_NOTFOUND);
+    }
+
+    expect_db_del(db, htonl(n), DB_NOTFOUND);
+
+    r = db->close(db, 0);
+    assert(r == 0);
+}
+
+int main(int argc, const char *argv[]) {
+    parse_args(argc, argv);
+
+    test_db_delete(0, 0);
+
+    int i;
+    for (i = 1; i <= (1<<16); i *= 2) {
+        test_db_delete(i, 0);
+    }
+
+    return 0;
+}