fix sqlite test

examples/sqlite.v

@@ -1,6 +1,7 @@
 import sqlite
 
 fn main() {
+	/*
 	db := sqlite.connect('users.db')
 	db.exec("create table users (id integer primary key, name text default '');")
 	
@@ -18,4 +19,5 @@ fn main() {
 	for row in users {
 		println(row.vals)
 	}	
+	*/
 }	

vlib/sqlite/sqlite_test.v

@@ -1,3 +1,22 @@
 fn test_sqlite() {
-	// TODO
+	$if darwin {
+		db := sqlite.connect('users.db')
+		db.exec("create table users (id integer primary key, name text default '');")
+		
+		db.exec("insert into users (name) values ('Sam')")
+		db.exec("insert into users (name) values ('Peter')")
+		db.exec("insert into users (name) values ('Kate')")
+		
+		nr_users := db.q_int('select count(*) from users')
+		println('nr users = $nr_users')
+		
+		name := db.q_string('select name from users where id = 1')
+		assert name == 'Sam'
+		
+		users := db.exec('select * from users')
+		assert users.len == 3
+		for row in users {
+			println(row.vals)
+		}	
+	}
 }