examples: Fix warnings of customer_database_test.

diff --git a/src/example/customer_database_test.c b/src/example/customer_database_test.c
index 8a95874..27e1df6 100644 (file)
--- a/src/example/customer_database_test.c
+++ b/src/example/customer_database_test.c
@@ -23,38 +23,54 @@ extern DatabaseConnection* connect_to_customer_database();
 extern unsigned int get_customer_id_by_name(
     DatabaseConnection * const connection, const char * const customer_name);
 
-// Mock query database function.
-static unsigned int mock_query_database(
-        DatabaseConnection* const connection, const char * const query_string,
-        void *** const results) {
-    *results = (void**)((unsigned)mock());
+/* Mock query database function. */
+static unsigned int mock_query_database(DatabaseConnection* const connection,
+                                        const char * const query_string,
+                                        void *** const results) {
+    (void) connection; /* unused */
+    (void) query_string; /* unused */
+
+    *results = (void**)((size_t)mock());
     return (unsigned int)mock();
 }
 
-// Mock of the connect to database function.
+/* Mock of the connect to database function. */
 DatabaseConnection* connect_to_database(const char * const database_url,
                                         const unsigned int port) {
-    return (DatabaseConnection*)((unsigned)mock());
+    (void) database_url; /* unused */
+    (void) port; /* unused */
+
+    return (DatabaseConnection*)((size_t)mock());
 }
 
 static void test_connect_to_customer_database(void **state) {
+    (void) state; /* unused */
+
     will_return(connect_to_database, 0x0DA7ABA53);
-    assert_int_equal((int)connect_to_customer_database(), 0x0DA7ABA53);
+
+    assert_int_equal((int)(size_t)connect_to_customer_database(), 0x0DA7ABA53);
 }
 
 /* This test fails as the mock function connect_to_database() will have no
  * value to return. */
+#if 0
 static void fail_connect_to_customer_database(void **state) {
+    (void) state; /* unused */
+
     assert_true(connect_to_customer_database() ==
                 (DatabaseConnection*)0x0DA7ABA53);
 }
+#endif
 
 static void test_get_customer_id_by_name(void **state) {
     DatabaseConnection connection = {
         "somedatabase.somewhere.com", 12345678, mock_query_database
     };
-    // Return a single customer ID when mock_query_database() is called.
+    /* Return a single customer ID when mock_query_database() is called. */
     int customer_ids = 543;
+
+    (void) state; /* unused */
+
     will_return(mock_query_database, &customer_ids);
     will_return(mock_query_database, 1);
     assert_int_equal(get_customer_id_by_name(&connection, "john doe"), 543);