mirror of
https://github.com/encounter/dawn-cmake.git
synced 2025-08-15 00:19:21 +00:00
a539d8d33c
An element-wise vector transformation utility function. Similar to JS/TS's map() method on arrays. Change-Id: I4baf52daa918f2e7bf5f9b4af13894fe66826f7c Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/69103 Kokoro: Kokoro <noreply+kokoro@google.com> Commit-Queue: Ben Clayton <bclayton@chromium.org> Reviewed-by: Antonio Maiorano <amaiorano@google.com>
95 lines
2.8 KiB
C++
95 lines
2.8 KiB
C++
// Copyright 2021 The Tint Authors.
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License 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 "src/utils/transform.h"
|
|
|
|
#include <string>
|
|
#include <type_traits>
|
|
|
|
#include "gmock/gmock.h"
|
|
|
|
#define CHECK_ELEMENT_TYPE(vector, expected) \
|
|
static_assert(std::is_same<decltype(vector)::value_type, expected>::value, \
|
|
"unexpected result vector element type")
|
|
|
|
namespace tint {
|
|
namespace utils {
|
|
namespace {
|
|
|
|
TEST(TransformTest, Empty) {
|
|
const std::vector<int> empty{};
|
|
{
|
|
auto transformed = Transform(empty, [](int) -> int {
|
|
[] { FAIL() << "Transform should not be called for empty vector"; }();
|
|
return 0;
|
|
});
|
|
CHECK_ELEMENT_TYPE(transformed, int);
|
|
EXPECT_EQ(transformed.size(), 0u);
|
|
}
|
|
{
|
|
auto transformed = Transform(empty, [](int, size_t) -> int {
|
|
[] { FAIL() << "Transform should not be called for empty vector"; }();
|
|
return 0;
|
|
});
|
|
CHECK_ELEMENT_TYPE(transformed, int);
|
|
EXPECT_EQ(transformed.size(), 0u);
|
|
}
|
|
}
|
|
|
|
TEST(TransformTest, Identity) {
|
|
const std::vector<int> input{1, 2, 3, 4};
|
|
{
|
|
auto transformed = Transform(input, [](int i) { return i; });
|
|
CHECK_ELEMENT_TYPE(transformed, int);
|
|
EXPECT_THAT(transformed, testing::ElementsAre(1, 2, 3, 4));
|
|
}
|
|
{
|
|
auto transformed = Transform(input, [](int i, size_t) { return i; });
|
|
CHECK_ELEMENT_TYPE(transformed, int);
|
|
EXPECT_THAT(transformed, testing::ElementsAre(1, 2, 3, 4));
|
|
}
|
|
}
|
|
|
|
TEST(TransformTest, Index) {
|
|
const std::vector<int> input{10, 20, 30, 40};
|
|
{
|
|
auto transformed = Transform(input, [](int, size_t idx) { return idx; });
|
|
CHECK_ELEMENT_TYPE(transformed, size_t);
|
|
EXPECT_THAT(transformed, testing::ElementsAre(0u, 1u, 2u, 3u));
|
|
}
|
|
}
|
|
|
|
TEST(TransformTest, TransformSameType) {
|
|
const std::vector<int> input{1, 2, 3, 4};
|
|
{
|
|
auto transformed = Transform(input, [](int i) { return i * 10; });
|
|
CHECK_ELEMENT_TYPE(transformed, int);
|
|
EXPECT_THAT(transformed, testing::ElementsAre(10, 20, 30, 40));
|
|
}
|
|
}
|
|
|
|
TEST(TransformTest, TransformDifferentType) {
|
|
const std::vector<int> input{1, 2, 3, 4};
|
|
{
|
|
auto transformed =
|
|
Transform(input, [](int i) { return std::to_string(i); });
|
|
CHECK_ELEMENT_TYPE(transformed, std::string);
|
|
EXPECT_THAT(transformed, testing::ElementsAre("1", "2", "3", "4"));
|
|
}
|
|
}
|
|
|
|
} // namespace
|
|
} // namespace utils
|
|
} // namespace tint
|