1 files changed, 173 insertions, 0 deletions
diff --git a/third_party/abseil_cpp/absl/types/any_exception_safety_test.cc b/third_party/abseil_cpp/absl/types/any_exception_safety_test.cc
new file mode 100644
index 0000000000..31c1140135
--- /dev/null
+++ b/third_party/abseil_cpp/absl/types/any_exception_safety_test.cc
@@ -0,0 +1,173 @@
+// Copyright 2017 The Abseil 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
+//
+//      https://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 "absl/types/any.h"
+
+#include "absl/base/config.h"
+
+// This test is a no-op when absl::any is an alias for std::any and when
+// exceptions are not enabled.
+#if !defined(ABSL_USES_STD_ANY) && defined(ABSL_HAVE_EXCEPTIONS)
+
+#include <typeinfo>
+#include <vector>
+
+#include "gtest/gtest.h"
+#include "absl/base/internal/exception_safety_testing.h"
+
+using Thrower = testing::ThrowingValue<>;
+using NoThrowMoveThrower =
+    testing::ThrowingValue<testing::TypeSpec::kNoThrowMove>;
+using ThrowerList = std::initializer_list<Thrower>;
+using ThrowerVec = std::vector<Thrower>;
+using ThrowingAlloc = testing::ThrowingAllocator<Thrower>;
+using ThrowingThrowerVec = std::vector<Thrower, ThrowingAlloc>;
+
+namespace {
+
+testing::AssertionResult AnyInvariants(absl::any* a) {
+  using testing::AssertionFailure;
+  using testing::AssertionSuccess;
+
+  if (a->has_value()) {
+    if (a->type() == typeid(void)) {
+      return AssertionFailure()
+             << "A non-empty any should not have type `void`";
+    }
+  } else {
+    if (a->type() != typeid(void)) {
+      return AssertionFailure()
+             << "An empty any should have type void, but has type "
+             << a->type().name();
+    }
+  }
+
+  //  Make sure that reset() changes any to a valid state.
+  a->reset();
+  if (a->has_value()) {
+    return AssertionFailure() << "A reset `any` should be valueless";
+  }
+  if (a->type() != typeid(void)) {
+    return AssertionFailure() << "A reset `any` should have type() of `void`, "
+                                 "but instead has type "
+                              << a->type().name();
+  }
+  try {
+    auto unused = absl::any_cast<Thrower>(*a);
+    static_cast<void>(unused);
+    return AssertionFailure()
+           << "A reset `any` should not be able to be any_cast";
+  } catch (const absl::bad_any_cast&) {
+  } catch (...) {
+    return AssertionFailure()
+           << "Unexpected exception thrown from absl::any_cast";
+  }
+  return AssertionSuccess();
+}
+
+testing::AssertionResult AnyIsEmpty(absl::any* a) {
+  if (!a->has_value()) {
+    return testing::AssertionSuccess();
+  }
+  return testing::AssertionFailure()
+         << "a should be empty, but instead has value "
+         << absl::any_cast<Thrower>(*a).Get();
+}
+
+TEST(AnyExceptionSafety, Ctors) {
+  Thrower val(1);
+  testing::TestThrowingCtor<absl::any>(val);
+
+  Thrower copy(val);
+  testing::TestThrowingCtor<absl::any>(copy);
+
+  testing::TestThrowingCtor<absl::any>(absl::in_place_type_t<Thrower>(), 1);
+
+  testing::TestThrowingCtor<absl::any>(absl::in_place_type_t<ThrowerVec>(),
+                                       ThrowerList{val});
+
+  testing::TestThrowingCtor<absl::any,
+                            absl::in_place_type_t<ThrowingThrowerVec>,
+                            ThrowerList, ThrowingAlloc>(
+      absl::in_place_type_t<ThrowingThrowerVec>(), {val}, ThrowingAlloc());
+}
+
+TEST(AnyExceptionSafety, Assignment) {
+  auto original =
+      absl::any(absl::in_place_type_t<Thrower>(), 1, testing::nothrow_ctor);
+  auto any_is_strong = [original](absl::any* ap) {
+    return testing::AssertionResult(ap->has_value() &&
+                                    absl::any_cast<Thrower>(original) ==
+                                        absl::any_cast<Thrower>(*ap));
+  };
+  auto any_strong_tester = testing::MakeExceptionSafetyTester()
+                               .WithInitialValue(original)
+                               .WithContracts(AnyInvariants, any_is_strong);
+
+  Thrower val(2);
+  absl::any any_val(val);
+  NoThrowMoveThrower mv_val(2);
+
+  auto assign_any = [&any_val](absl::any* ap) { *ap = any_val; };
+  auto assign_val = [&val](absl::any* ap) { *ap = val; };
+  auto move = [&val](absl::any* ap) { *ap = std::move(val); };
+  auto move_movable = [&mv_val](absl::any* ap) { *ap = std::move(mv_val); };
+
+  EXPECT_TRUE(any_strong_tester.Test(assign_any));
+  EXPECT_TRUE(any_strong_tester.Test(assign_val));
+  EXPECT_TRUE(any_strong_tester.Test(move));
+  EXPECT_TRUE(any_strong_tester.Test(move_movable));
+
+  auto empty_any_is_strong = [](absl::any* ap) {
+    return testing::AssertionResult{!ap->has_value()};
+  };
+  auto strong_empty_any_tester =
+      testing::MakeExceptionSafetyTester()
+          .WithInitialValue(absl::any{})
+          .WithContracts(AnyInvariants, empty_any_is_strong);
+
+  EXPECT_TRUE(strong_empty_any_tester.Test(assign_any));
+  EXPECT_TRUE(strong_empty_any_tester.Test(assign_val));
+  EXPECT_TRUE(strong_empty_any_tester.Test(move));
+}
+
+TEST(AnyExceptionSafety, Emplace) {
+  auto initial_val =
+      absl::any{absl::in_place_type_t<Thrower>(), 1, testing::nothrow_ctor};
+  auto one_tester = testing::MakeExceptionSafetyTester()
+                        .WithInitialValue(initial_val)
+                        .WithContracts(AnyInvariants, AnyIsEmpty);
+
+  auto emp_thrower = [](absl::any* ap) { ap->emplace<Thrower>(2); };
+  auto emp_throwervec = [](absl::any* ap) {
+    std::initializer_list<Thrower> il{Thrower(2, testing::nothrow_ctor)};
+    ap->emplace<ThrowerVec>(il);
+  };
+  auto emp_movethrower = [](absl::any* ap) {
+    ap->emplace<NoThrowMoveThrower>(2);
+  };
+
+  EXPECT_TRUE(one_tester.Test(emp_thrower));
+  EXPECT_TRUE(one_tester.Test(emp_throwervec));
+  EXPECT_TRUE(one_tester.Test(emp_movethrower));
+
+  auto empty_tester = one_tester.WithInitialValue(absl::any{});
+
+  EXPECT_TRUE(empty_tester.Test(emp_thrower));
+  EXPECT_TRUE(empty_tester.Test(emp_throwervec));
+}
+
+}  // namespace
+
+#endif  // #if !defined(ABSL_USES_STD_ANY) && defined(ABSL_HAVE_EXCEPTIONS)