UUID ToString & test (aws#118)

UUID ToString & test
awslabs/aws-crt-cpp#116

Author: TingDaoK

source/UUID.cpp

@@ -48,10 +48,10 @@ namespace Aws
         String UUID::ToString() const
         {
             String uuidStr;
-            uuidStr.reserve(AWS_UUID_STR_LEN);
-
+            uuidStr.resize(AWS_UUID_STR_LEN);
             auto outBuf = ByteBufFromEmptyArray(reinterpret_cast<const uint8_t *>(uuidStr.data()), uuidStr.capacity());
             aws_uuid_to_str(&m_uuid, &outBuf);
+            uuidStr.resize(outBuf.len);
             return uuidStr;
         }
 

tests/CMakeLists.txt

@@ -44,6 +44,7 @@ add_test_case(TestProviderDefaultChainGet)
 add_test_case(HttpRequestTestCreateDestroy)
 add_test_case(Sigv4SigningTestCreateDestroy)
 add_test_case(Sigv4SigningTestSimple)
+add_test_case(UUIDToString)
 
 generate_cpp_test_driver(${TEST_BINARY_NAME})
 

tests/UUIDTest.cpp

@@ -0,0 +1,35 @@
+
+/*
+ * Copyright 2010-2020 Amazon.com, Inc. or its affiliates. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License").
+ * You may not use this file except in compliance with the License.
+ * A copy of the License is located at
+ *
+ *  http://aws.amazon.com/apache2.0
+ *
+ * or in the "license" file accompanying this file. This file 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 <aws/crt/Api.h>
+#include <aws/crt/UUID.h>
+
+#include <aws/testing/aws_test_harness.h>
+#include <iostream>
+#include <utility>
+
+static int s_UUIDToString(Aws::Crt::Allocator *allocator, void *ctx)
+{
+    (void)ctx;
+    Aws::Crt::ApiHandle apiHandle(allocator);
+    Aws::Crt::UUID Uuid;
+    Aws::Crt::String uuidStr = Uuid.ToString();
+    ASSERT_TRUE(uuidStr.length() != 0);
+    ASSERT_TRUE(Uuid == Aws::Crt::UUID(uuidStr));
+
+    return AWS_ERROR_SUCCESS;
+}
+
+AWS_TEST_CASE(UUIDToString, s_UUIDToString)