From c48c57073d618df5a023b5daec372aec5770b471 Mon Sep 17 00:00:00 2001
From: Martin Braun <martin.braun@ettus.com>
Date: Wed, 10 Jan 2018 14:45:30 -0800
Subject: uhd: Add narrow_cast and narrow

Reviewed-by: Ashish Chaudhari <ashish.chaudhari@ettus.com>
---
 host/tests/CMakeLists.txt       |  1 +
 host/tests/narrow_cast_test.cpp | 21 +++++++++++++++++++++
 2 files changed, 22 insertions(+)
 create mode 100644 host/tests/narrow_cast_test.cpp

(limited to 'host/tests')

diff --git a/host/tests/CMakeLists.txt b/host/tests/CMakeLists.txt
index 7fcf1652c..6f78f8d3e 100644
--- a/host/tests/CMakeLists.txt
+++ b/host/tests/CMakeLists.txt
@@ -27,6 +27,7 @@ SET(test_sources
     gain_group_test.cpp
     log_test.cpp
     math_test.cpp
+    narrow_cast_test.cpp
     property_test.cpp
     ranges_test.cpp
     sid_t_test.cpp
diff --git a/host/tests/narrow_cast_test.cpp b/host/tests/narrow_cast_test.cpp
new file mode 100644
index 000000000..2f784bfe3
--- /dev/null
+++ b/host/tests/narrow_cast_test.cpp
@@ -0,0 +1,21 @@
+//
+// Copyright 2018 Ettus Research, a National Instruments Company
+//
+// SPDX-License-Identifier: GPL-3.0
+//
+
+#include <uhd/exception.hpp>
+#include <../lib/include/uhdlib/utils/narrow.hpp>
+#include <boost/test/unit_test.hpp>
+#include <iostream>
+
+using namespace uhd;
+
+BOOST_AUTO_TEST_CASE(test_narrow){
+    uint16_t x = 5;
+    uint8_t y = narrow_cast<uint8_t>(x);
+    BOOST_CHECK_EQUAL(x, y);
+
+    BOOST_CHECK_THROW(narrow<uint8_t>(uint16_t(1<<10)), narrowing_error);
+    BOOST_CHECK_THROW(narrow<uint8_t>(int8_t(-1)), narrowing_error);
+}
-- 
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