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102 lines
2.6 KiB
C++
102 lines
2.6 KiB
C++
// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
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// Exceptions. See /LICENSE for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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#include "executable_semantics/common/error.h"
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#include <gtest/gtest.h>
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namespace Carbon::Testing {
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namespace {
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auto MakeSuccess() -> ErrorOr<Success> { return Success(); }
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auto MakeError(std::string_view message) -> ErrorOr<Success> {
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return Error(message);
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}
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auto MakeInt(int value) -> ErrorOr<int> { return value; }
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auto MakeFailedInt(std::string_view message) -> ErrorOr<int> {
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return Error(message);
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}
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auto ErrorToString(const Error& e) -> std::string { return e.message(); }
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template <typename V>
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auto ErrorToString(const ErrorOr<V>& e) -> std::string {
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return e.error().message();
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}
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TEST(ErrorTest, FatalProgramError) {
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EXPECT_EQ(ErrorToString(FATAL_PROGRAM_ERROR_NO_LINE() << "test"),
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"PROGRAM ERROR: test");
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}
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TEST(ErrorTest, FatalRuntimeError) {
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EXPECT_EQ(ErrorToString(FATAL_RUNTIME_ERROR_NO_LINE() << "test"),
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"RUNTIME ERROR: test");
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}
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TEST(ErrorTest, FatalCompilationError) {
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EXPECT_EQ(ErrorToString(FATAL_COMPILATION_ERROR_NO_LINE() << "test"),
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"COMPILATION ERROR: test");
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}
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TEST(ErrorTest, FatalProgramErrorLine) {
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EXPECT_EQ(ErrorToString(FATAL_PROGRAM_ERROR(1) << "test"),
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"PROGRAM ERROR: 1: test");
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}
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TEST(ErrorTest, ReturnIfErrorNoError) {
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auto result = []() -> ErrorOr<Success> {
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RETURN_IF_ERROR(MakeSuccess());
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RETURN_IF_ERROR(MakeSuccess());
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return Success();
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}();
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EXPECT_TRUE(result.ok());
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}
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TEST(ErrorTest, ReturnIfErrorHasError) {
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auto result = []() -> ErrorOr<Success> {
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RETURN_IF_ERROR(MakeSuccess());
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RETURN_IF_ERROR(MakeError("error"));
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return Success();
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}();
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ASSERT_FALSE(result.ok());
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EXPECT_EQ(ErrorToString(result), "error");
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}
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TEST(ErrorTest, AssignOrReturnNoError) {
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auto result = []() -> ErrorOr<int> {
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RETURN_IF_ERROR(MakeSuccess());
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ASSIGN_OR_RETURN(int a, MakeInt(1));
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ASSIGN_OR_RETURN(const int b, MakeInt(2));
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int c = 0;
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ASSIGN_OR_RETURN(c, MakeInt(3));
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return a + b + c;
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}();
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ASSERT_TRUE(result.ok());
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EXPECT_EQ(6, *result);
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}
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TEST(ErrorTest, AssignOrReturnHasDirectError) {
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auto result = []() -> ErrorOr<int> {
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RETURN_IF_ERROR(MakeError("error"));
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return 0;
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}();
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ASSERT_FALSE(result.ok());
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}
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TEST(ErrorTest, AssignOrReturnHasErrorInExpected) {
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auto result = []() -> ErrorOr<int> {
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ASSIGN_OR_RETURN(int a, MakeFailedInt("error"));
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return a;
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}();
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ASSERT_FALSE(result.ok());
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EXPECT_EQ(ErrorToString(result), "error");
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}
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} // namespace
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} // namespace Carbon::Testing
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