cc_bindings_from_rs/test/bridging/composable/composable_bridging_test.cc

// Part of the Crubit project, under the Apache License v2.0 with LLVM
// Exceptions. See /LICENSE for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception

#include "cc_bindings_from_rs/test/bridging/composable/composable_bridging.h"

#include <optional>

#include "gtest/gtest.h"
#include "support/rs_std/slice_ref.h"

namespace crubit {
namespace {

TEST(ComposableBridging, MaybeInt) {
  std::optional<int> maybe_int = composable_bridging::maybe_int();
  ASSERT_TRUE(maybe_int.has_value());
  EXPECT_EQ(maybe_int.value(), 4);
}

TEST(ComposableBridging, MaybeStringView) {
  std::optional<std::string_view> maybe_string_view =
      composable_bridging::maybe_string_view();
  EXPECT_FALSE(maybe_string_view.has_value());
}

TEST(ComposableBridging, MaybeIntSlice) {
  std::optional<rs_std::SliceRef<const int>> maybe_int_slice =
      composable_bridging::maybe_int_slice();
  ASSERT_TRUE(maybe_int_slice.has_value());
  rs_std::SliceRef<const int> int_slice = maybe_int_slice.value();
  auto int_slice_span = int_slice.to_span();
  EXPECT_EQ(int_slice_span.size(), 3);
  EXPECT_EQ(int_slice_span[0], 1);
  EXPECT_EQ(int_slice_span[1], 2);
  EXPECT_EQ(int_slice_span[2], 3);
}

}  // namespace
}  // namespace crubit