clang-tools-extra/clangd/unittests/LoggerTests.cpp

   1 //===-- LoggerTests.cpp ---------------------------------------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8 #include "support/Logger.h"
   9 #include "llvm/Support/Errc.h"
  10 #include "llvm/Support/Error.h"
  11 #include "gmock/gmock.h"
  12 #include "gtest/gtest.h"
  13 #include <optional>
  14
  15 namespace clang {
  16 namespace clangd {
  17 namespace {
  18
  19 TEST(ErrorTest, Overloads) {
  20   EXPECT_EQ("foo", llvm::toString(error("foo")));
  21   // Inconvertible to error code when none is specified.
  22   // Don't actually try to convert, it'll crash.
  23   handleAllErrors(error("foo"), [&](const llvm::ErrorInfoBase &EI) {
  24     EXPECT_EQ(llvm::inconvertibleErrorCode(), EI.convertToErrorCode());
  25   });
  26
  27   EXPECT_EQ("foo 42", llvm::toString(error("foo {0}", 42)));
  28   handleAllErrors(error("foo {0}", 42), [&](const llvm::ErrorInfoBase &EI) {
  29     EXPECT_EQ(llvm::inconvertibleErrorCode(), EI.convertToErrorCode());
  30   });
  31
  32   EXPECT_EQ("foo", llvm::toString(error(llvm::errc::invalid_argument, "foo")));
  33   EXPECT_EQ(llvm::errc::invalid_argument,
  34             llvm::errorToErrorCode(error(llvm::errc::invalid_argument, "foo")));
  35
  36   EXPECT_EQ("foo 42",
  37             llvm::toString(error(llvm::errc::invalid_argument, "foo {0}", 42)));
  38   EXPECT_EQ(llvm::errc::invalid_argument,
  39             llvm::errorToErrorCode(
  40                 error(llvm::errc::invalid_argument, "foo {0}", 42)));
  41 }
  42
  43 TEST(ErrorTest, Lifetimes) {
  44   std::optional<llvm::Error> Err;
  45   {
  46     // Check the error contains the value when error() was called.
  47     std::string S = "hello, world";
  48     Err = error("S={0}", llvm::StringRef(S));
  49     S = "garbage";
  50   }
  51   EXPECT_EQ("S=hello, world", llvm::toString(std::move(*Err)));
  52 }
  53
  54 TEST(ErrorTest, ConsumeError) {
  55   llvm::Error Foo = error("foo");
  56   llvm::Error Bar = error("bar: {0}", std::move(Foo));
  57   EXPECT_EQ("bar: foo", llvm::toString(std::move(Bar)));
  58   // No assert for unchecked Foo.
  59 }
  60
  61 } // namespace
  62 } // namespace clangd
  63 } // namespace clang