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77 lines
1.8 KiB
77 lines
1.8 KiB
// Copyright 2020 The Pigweed Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License"); you may not
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// use this file except in compliance with the License. You may obtain a copy of
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// the License at
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//
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// https://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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// License for the specific language governing permissions and limitations under
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// the License.
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#include "pw_result/result.h"
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#include "gtest/gtest.h"
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namespace pw {
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namespace {
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TEST(Result, CreateOk) {
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Result<const char*> res("hello");
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EXPECT_TRUE(res.ok());
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EXPECT_EQ(res.status(), OkStatus());
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EXPECT_EQ(res.value(), "hello");
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}
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TEST(Result, CreateNotOk) {
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Result<int> res(Status::DataLoss());
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EXPECT_FALSE(res.ok());
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EXPECT_EQ(res.status(), Status::DataLoss());
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}
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TEST(Result, ValueOr) {
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Result<int> good(3);
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Result<int> bad(Status::DataLoss());
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EXPECT_EQ(good.value_or(42), 3);
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EXPECT_EQ(bad.value_or(42), 42);
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}
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TEST(Result, ConstructType) {
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struct Point {
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Point(int a, int b) : x(a), y(b) {}
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int x;
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int y;
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};
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Result<Point> origin{std::in_place, 0, 0};
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ASSERT_TRUE(origin.ok());
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ASSERT_EQ(origin.value().x, 0);
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ASSERT_EQ(origin.value().y, 0);
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}
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Result<float> Divide(float a, float b) {
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if (b == 0) {
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return Status::InvalidArgument();
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}
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return a / b;
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}
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TEST(Divide, ReturnOk) {
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Result<float> res = Divide(10, 5);
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ASSERT_TRUE(res.ok());
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EXPECT_EQ(res.value(), 2.0f);
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}
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TEST(Divide, ReturnNotOk) {
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Result<float> res = Divide(10, 0);
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EXPECT_FALSE(res.ok());
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EXPECT_EQ(res.status(), Status::InvalidArgument());
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}
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} // namespace
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} // namespace pw
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