Uploading cmockery 0.1.2 to external/cmockery

A lightweight library to simplify and generalize the process of writing unit
tests for C applications.

Change-Id: I460a9b6740f10593e35ae988df753a43491c6456
diff --git a/cmockery_0_1_2/src/example/customer_database_test.c b/cmockery_0_1_2/src/example/customer_database_test.c
new file mode 100644
index 0000000..b059007
--- /dev/null
+++ b/cmockery_0_1_2/src/example/customer_database_test.c
@@ -0,0 +1,69 @@
+/*
+ * Copyright 2008 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ * http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#include <stdarg.h>
+#include <stddef.h>
+#include <setjmp.h>
+#include <cmockery.h>
+#include <database.h>
+
+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.
+unsigned int mock_query_database(
+        DatabaseConnection* const connection, const char * const query_string,
+        void *** const results) {
+  *results = (void**)mock();
+    return (unsigned int)mock();
+}
+
+// Mock of the connect to database function.
+DatabaseConnection* connect_to_database(const char * const database_url,
+                                        const unsigned int port) {
+    return (DatabaseConnection*)mock();
+}
+
+void test_connect_to_customer_database(void **state) {
+    will_return(connect_to_database, 0x0DA7ABA53);
+    assert_int_equal((int)connect_to_customer_database(), 0x0DA7ABA53);
+}
+
+/* This test fails as the mock function connect_to_database() will have no
+ * value to return. */
+void fail_connect_to_customer_database(void **state) {
+    assert_true(connect_to_customer_database() ==
+                (DatabaseConnection*)0x0DA7ABA53);
+}
+
+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.
+    int customer_ids = 543;
+    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);
+}
+
+int main(int argc, char* argv[]) {
+    const UnitTest tests[] = {
+        unit_test(test_connect_to_customer_database),
+        unit_test(test_get_customer_id_by_name),
+    };
+    return run_tests(tests);
+}