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      1 /*
      2  * Copyright 2008 Google Inc.
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  * http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 #include <stdarg.h>
     17 #include <stddef.h>
     18 #include <setjmp.h>
     19 #include <cmockery.h>
     20 #include <database.h>
     21 
     22 extern DatabaseConnection* connect_to_customer_database();
     23 extern unsigned int get_customer_id_by_name(
     24     DatabaseConnection * const connection, const char * const customer_name);
     25 
     26 // Mock query database function.
     27 unsigned int mock_query_database(
     28         DatabaseConnection* const connection, const char * const query_string,
     29         void *** const results) {
     30   *results = (void**)mock();
     31     return (unsigned int)mock();
     32 }
     33 
     34 // Mock of the connect to database function.
     35 DatabaseConnection* connect_to_database(const char * const database_url,
     36                                         const unsigned int port) {
     37     return (DatabaseConnection*)mock();
     38 }
     39 
     40 void test_connect_to_customer_database(void **state) {
     41     will_return(connect_to_database, 0x0DA7ABA53);
     42     assert_int_equal((int)connect_to_customer_database(), 0x0DA7ABA53);
     43 }
     44 
     45 /* This test fails as the mock function connect_to_database() will have no
     46  * value to return. */
     47 void fail_connect_to_customer_database(void **state) {
     48     assert_true(connect_to_customer_database() ==
     49                 (DatabaseConnection*)0x0DA7ABA53);
     50 }
     51 
     52 void test_get_customer_id_by_name(void **state) {
     53     DatabaseConnection connection = {
     54         "somedatabase.somewhere.com", 12345678, mock_query_database
     55     };
     56     // Return a single customer ID when mock_query_database() is called.
     57     int customer_ids = 543;
     58     will_return(mock_query_database, &customer_ids);
     59     will_return(mock_query_database, 1);
     60     assert_int_equal(get_customer_id_by_name(&connection, "john doe"), 543);
     61 }
     62 
     63 int main(int argc, char* argv[]) {
     64     const UnitTest tests[] = {
     65         unit_test(test_connect_to_customer_database),
     66         unit_test(test_get_customer_id_by_name),
     67     };
     68     return run_tests(tests);
     69 }
     70