From 6a2eb3b852ff1c4701813266d531dc2a14b74bef Mon Sep 17 00:00:00 2001
From: Pavel Kirienko <pavel.kirienko@gmail.com>
Date: Sun, 9 Mar 2014 14:04:11 +0400
Subject: [PATCH] Tests for try_implicit_cast<>()

---
 libuavcan/test/util.cpp | 33 +++++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)
 create mode 100644 libuavcan/test/util.cpp

diff --git a/libuavcan/test/util.cpp b/libuavcan/test/util.cpp
new file mode 100644
index 0000000000..76aa2fa20a
--- /dev/null
+++ b/libuavcan/test/util.cpp
@@ -0,0 +1,33 @@
+/*
+ * Copyright (C) 2014 Pavel Kirienko <pavel.kirienko@gmail.com>
+ */
+
+#include <gtest/gtest.h>
+#include <uavcan/internal/util.hpp>
+
+struct NonConvertible { };
+struct ConvertibleToBool
+{
+    const bool value;
+    ConvertibleToBool(bool value) : value(value) { }
+    operator bool() const { return value; }
+    bool operator!() const { return !value; }
+};
+
+TEST(Util, TryImplicitCast)
+{
+    using uavcan::try_implicit_cast;
+
+    ASSERT_FALSE(try_implicit_cast<bool>(NonConvertible()));
+    ASSERT_TRUE(try_implicit_cast<bool>(NonConvertible(), true));
+
+    ASSERT_EQ(0, try_implicit_cast<long>(NonConvertible()));
+    ASSERT_EQ(9000, try_implicit_cast<long>(NonConvertible(), 9000));
+
+    ASSERT_TRUE(try_implicit_cast<bool>(ConvertibleToBool(true)));
+    ASSERT_TRUE(try_implicit_cast<bool>(ConvertibleToBool(true), false));
+    ASSERT_FALSE(try_implicit_cast<bool>(ConvertibleToBool(false)));
+    ASSERT_FALSE(try_implicit_cast<bool>(ConvertibleToBool(false), true));
+    ASSERT_EQ(1, try_implicit_cast<long>(ConvertibleToBool(true)));
+    ASSERT_EQ(0, try_implicit_cast<long>(ConvertibleToBool(false), -100));
+}