diff options
author | Vincent Ambo <mail@tazj.in> | 2020-11-21T13·43+0100 |
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committer | Vincent Ambo <mail@tazj.in> | 2020-11-21T14·48+0100 |
commit | 082c006c04343a78d87b6c6ab3608c25d6213c3f (patch) | |
tree | 16e6f04f8d1d1d2d67e8e917d5e7bb48c1b60375 /third_party/abseil_cpp/absl/strings/cord_test.cc | |
parent | cc27324d0226953943f408ce3c69ad7d648e005e (diff) |
merge(3p/absl): subtree merge of Abseil up to e19260f r/1889
... notably, this includes Abseil's own StatusOr type, which conflicted with our implementation (that was taken from TensorFlow). Change-Id: Ie7d6764b64055caaeb8dc7b6b9d066291e6b538f
Diffstat (limited to 'third_party/abseil_cpp/absl/strings/cord_test.cc')
-rw-r--r-- | third_party/abseil_cpp/absl/strings/cord_test.cc | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/third_party/abseil_cpp/absl/strings/cord_test.cc b/third_party/abseil_cpp/absl/strings/cord_test.cc index 4443c8289658..7942bfc03c49 100644 --- a/third_party/abseil_cpp/absl/strings/cord_test.cc +++ b/third_party/abseil_cpp/absl/strings/cord_test.cc @@ -1,3 +1,17 @@ +// Copyright 2020 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/strings/cord.h" #include <algorithm> @@ -167,6 +181,8 @@ class CordTestPeer { const Cord& c, absl::FunctionRef<void(absl::string_view)> callback) { c.ForEachChunk(callback); } + + static bool IsTree(const Cord& c) { return c.contents_.is_tree(); } }; ABSL_NAMESPACE_END @@ -1613,3 +1629,83 @@ TEST(CordDeathTest, Hardening) { EXPECT_DEATH_IF_SUPPORTED(static_cast<void>(cord.chunk_end()->empty()), ""); EXPECT_DEATH_IF_SUPPORTED(++cord.chunk_end(), ""); } + +class AfterExitCordTester { + public: + bool Set(absl::Cord* cord, absl::string_view expected) { + cord_ = cord; + expected_ = expected; + return true; + } + + ~AfterExitCordTester() { + EXPECT_EQ(*cord_, expected_); + } + private: + absl::Cord* cord_; + absl::string_view expected_; +}; + +template <typename Str> +void TestConstinitConstructor(Str) { + const auto expected = Str::value; + // Defined before `cord` to be destroyed after it. + static AfterExitCordTester exit_tester; // NOLINT + ABSL_CONST_INIT static absl::Cord cord(Str{}); // NOLINT + static bool init_exit_tester = exit_tester.Set(&cord, expected); + (void)init_exit_tester; + + EXPECT_EQ(cord, expected); + // Copy the object and test the copy, and the original. + { + absl::Cord copy = cord; + EXPECT_EQ(copy, expected); + } + // The original still works + EXPECT_EQ(cord, expected); + + // Try making adding more structure to the tree. + { + absl::Cord copy = cord; + std::string expected_copy(expected); + for (int i = 0; i < 10; ++i) { + copy.Append(cord); + absl::StrAppend(&expected_copy, expected); + EXPECT_EQ(copy, expected_copy); + } + } + + // Make sure we are using the right branch during constant evaluation. + EXPECT_EQ(absl::CordTestPeer::IsTree(cord), cord.size() >= 16); + + for (int i = 0; i < 10; ++i) { + // Make a few more Cords from the same global rep. + // This tests what happens when the refcount for it gets below 1. + EXPECT_EQ(expected, absl::Cord(Str{})); + } +} + +constexpr int SimpleStrlen(const char* p) { + return *p ? 1 + SimpleStrlen(p + 1) : 0; +} + +struct ShortView { + constexpr absl::string_view operator()() const { + return absl::string_view("SSO string", SimpleStrlen("SSO string")); + } +}; + +struct LongView { + constexpr absl::string_view operator()() const { + return absl::string_view("String that does not fit SSO.", + SimpleStrlen("String that does not fit SSO.")); + } +}; + + +TEST(Cord, ConstinitConstructor) { + TestConstinitConstructor( + absl::strings_internal::MakeStringConstant(ShortView{})); + TestConstinitConstructor( + absl::strings_internal::MakeStringConstant(LongView{})); +} |