[Global]: loading init

deps/GSL/tests/utils_tests.cpp

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+///////////////////////////////////////////////////////////////////////////////
+//
+// Copyright (c) 2015 Microsoft Corporation. All rights reserved.
+//
+// This code is licensed under the MIT License (MIT).
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include <gtest/gtest.h>
+
+#include <algorithm>   // for move
+#include <complex>
+#include <cstddef>     // for std::ptrdiff_t
+#include <cstdint>     // for uint32_t, int32_t
+#include <functional>  // for reference_wrapper, _Bind_helper<>::type
+#include <gsl/narrow>  // for narrow, narrowing_error
+#include <gsl/util>    // finally, narrow_cast
+#include <limits>      // for numeric_limits
+#include <type_traits> // for is_same
+
+using namespace gsl;
+
+namespace
+{
+void f(int& i) { i += 1; }
+static int j = 0;
+void g() { j += 1; }
+} // namespace
+
+TEST(utils_tests, sanity_check_for_gsl_index_typedef)
+{
+    static_assert(std::is_same<gsl::index, std::ptrdiff_t>::value,
+                  "gsl::index represents wrong arithmetic type");
+}
+
+TEST(utils_tests, finally_lambda)
+{
+    int i = 0;
+    {
+        auto _ = finally([&]() { f(i); });
+        EXPECT_TRUE(i == 0);
+    }
+    EXPECT_TRUE(i == 1);
+}
+
+TEST(utils_tests, finally_lambda_move)
+{
+    int i = 0;
+    {
+        auto _1 = finally([&]() { f(i); });
+        {
+            auto _2 = std::move(_1);
+            EXPECT_TRUE(i == 0);
+        }
+        EXPECT_TRUE(i == 1);
+        {
+            auto _2 = std::move(_1);
+            EXPECT_TRUE(i == 1);
+        }
+        EXPECT_TRUE(i == 1);
+    }
+    EXPECT_TRUE(i == 1);
+}
+
+TEST(utils_tests, finally_const_lvalue_lambda)
+{
+    int i = 0;
+    {
+        const auto const_lvalue_lambda = [&]() { f(i); };
+        auto _ = finally(const_lvalue_lambda);
+        EXPECT_TRUE(i == 0);
+    }
+    EXPECT_TRUE(i == 1);
+}
+
+TEST(utils_tests, finally_mutable_lvalue_lambda)
+{
+    int i = 0;
+    {
+        auto mutable_lvalue_lambda = [&]() { f(i); };
+        auto _ = finally(mutable_lvalue_lambda);
+        EXPECT_TRUE(i == 0);
+    }
+    EXPECT_TRUE(i == 1);
+}
+
+TEST(utils_tests, finally_function_with_bind)
+{
+    int i = 0;
+    {
+        auto _ = finally([&i] { return f(i); });
+        EXPECT_TRUE(i == 0);
+    }
+    EXPECT_TRUE(i == 1);
+}
+
+TEST(utils_tests, finally_function_ptr)
+{
+    j = 0;
+    {
+        auto _ = finally(&g);
+        EXPECT_TRUE(j == 0);
+    }
+    EXPECT_TRUE(j == 1);
+}
+
+TEST(utils_tests, finally_function)
+{
+    j = 0;
+    {
+        auto _ = finally(g);
+        EXPECT_TRUE(j == 0);
+    }
+    EXPECT_TRUE(j == 1);
+}
+
+TEST(utils_tests, narrow_cast)
+{
+    int n = 120;
+    char c = narrow_cast<char>(n);
+    EXPECT_TRUE(c == 120);
+
+    n = 300;
+    unsigned char uc = narrow_cast<unsigned char>(n);
+    EXPECT_TRUE(uc == 44);
+}
+
+#ifndef GSL_KERNEL_MODE
+TEST(utils_tests, narrow)
+{
+    int n = 120;
+    const char c = narrow<char>(n);
+    EXPECT_TRUE(c == 120);
+
+    n = 300;
+    EXPECT_THROW(narrow<char>(n), narrowing_error);
+
+    const auto int32_max = std::numeric_limits<int32_t>::max();
+    const auto int32_min = std::numeric_limits<int32_t>::min();
+
+    EXPECT_TRUE(narrow<uint32_t>(int32_t(0)) == 0);
+    EXPECT_TRUE(narrow<uint32_t>(int32_t(1)) == 1);
+    EXPECT_TRUE(narrow<uint32_t>(int32_max) == static_cast<uint32_t>(int32_max));
+
+    EXPECT_THROW(narrow<uint32_t>(int32_t(-1)), narrowing_error);
+    EXPECT_THROW(narrow<uint32_t>(int32_min), narrowing_error);
+
+    n = -42;
+    EXPECT_THROW(narrow<unsigned>(n), narrowing_error);
+
+    EXPECT_TRUE(
+        narrow<std::complex<float>>(std::complex<double>(4, 2)) == std::complex<float>(4, 2));
+    EXPECT_THROW(narrow<std::complex<float>>(std::complex<double>(4.2)), narrowing_error);
+
+    EXPECT_TRUE(narrow<int>(float(1)) == 1);
+}
+#endif // GSL_KERNEL_MODE