1 files changed, 144 insertions, 0 deletions
diff --git a/absl/container/internal/hash_policy_traits_test.cc b/absl/container/internal/hash_policy_traits_test.cc
new file mode 100644
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+++ b/absl/container/internal/hash_policy_traits_test.cc
@@ -0,0 +1,144 @@
+// Copyright 2018 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
+//
+//      http://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/container/internal/hash_policy_traits.h"
+
+#include <functional>
+#include <memory>
+#include <new>
+
+#include "gmock/gmock.h"
+#include "gtest/gtest.h"
+
+namespace absl {
+inline namespace lts_2018_12_18 {
+namespace container_internal {
+namespace {
+
+using ::testing::MockFunction;
+using ::testing::Return;
+using ::testing::ReturnRef;
+
+using Alloc = std::allocator<int>;
+using Slot = int;
+
+struct PolicyWithoutOptionalOps {
+  using slot_type = Slot;
+  using key_type = Slot;
+  using init_type = Slot;
+
+  static std::function<void(void*, Slot*, Slot)> construct;
+  static std::function<void(void*, Slot*)> destroy;
+
+  static std::function<Slot&(Slot*)> element;
+  static int apply(int v) { return apply_impl(v); }
+  static std::function<int(int)> apply_impl;
+  static std::function<Slot&(Slot*)> value;
+};
+
+std::function<void(void*, Slot*, Slot)> PolicyWithoutOptionalOps::construct;
+std::function<void(void*, Slot*)> PolicyWithoutOptionalOps::destroy;
+
+std::function<Slot&(Slot*)> PolicyWithoutOptionalOps::element;
+std::function<int(int)> PolicyWithoutOptionalOps::apply_impl;
+std::function<Slot&(Slot*)> PolicyWithoutOptionalOps::value;
+
+struct PolicyWithOptionalOps : PolicyWithoutOptionalOps {
+  static std::function<void(void*, Slot*, Slot*)> transfer;
+};
+
+std::function<void(void*, Slot*, Slot*)> PolicyWithOptionalOps::transfer;
+
+struct Test : ::testing::Test {
+  Test() {
+    PolicyWithoutOptionalOps::construct = [&](void* a1, Slot* a2, Slot a3) {
+      construct.Call(a1, a2, std::move(a3));
+    };
+    PolicyWithoutOptionalOps::destroy = [&](void* a1, Slot* a2) {
+      destroy.Call(a1, a2);
+    };
+
+    PolicyWithoutOptionalOps::element = [&](Slot* a1) -> Slot& {
+      return element.Call(a1);
+    };
+    PolicyWithoutOptionalOps::apply_impl = [&](int a1) -> int {
+      return apply.Call(a1);
+    };
+    PolicyWithoutOptionalOps::value = [&](Slot* a1) -> Slot& {
+      return value.Call(a1);
+    };
+
+    PolicyWithOptionalOps::transfer = [&](void* a1, Slot* a2, Slot* a3) {
+      return transfer.Call(a1, a2, a3);
+    };
+  }
+
+  std::allocator<int> alloc;
+  int a = 53;
+
+  MockFunction<void(void*, Slot*, Slot)> construct;
+  MockFunction<void(void*, Slot*)> destroy;
+
+  MockFunction<Slot&(Slot*)> element;
+  MockFunction<int(int)> apply;
+  MockFunction<Slot&(Slot*)> value;
+
+  MockFunction<void(void*, Slot*, Slot*)> transfer;
+};
+
+TEST_F(Test, construct) {
+  EXPECT_CALL(construct, Call(&alloc, &a, 53));
+  hash_policy_traits<PolicyWithoutOptionalOps>::construct(&alloc, &a, 53);
+}
+
+TEST_F(Test, destroy) {
+  EXPECT_CALL(destroy, Call(&alloc, &a));
+  hash_policy_traits<PolicyWithoutOptionalOps>::destroy(&alloc, &a);
+}
+
+TEST_F(Test, element) {
+  int b = 0;
+  EXPECT_CALL(element, Call(&a)).WillOnce(ReturnRef(b));
+  EXPECT_EQ(&b, &hash_policy_traits<PolicyWithoutOptionalOps>::element(&a));
+}
+
+TEST_F(Test, apply) {
+  EXPECT_CALL(apply, Call(42)).WillOnce(Return(1337));
+  EXPECT_EQ(1337, (hash_policy_traits<PolicyWithoutOptionalOps>::apply(42)));
+}
+
+TEST_F(Test, value) {
+  int b = 0;
+  EXPECT_CALL(value, Call(&a)).WillOnce(ReturnRef(b));
+  EXPECT_EQ(&b, &hash_policy_traits<PolicyWithoutOptionalOps>::value(&a));
+}
+
+TEST_F(Test, without_transfer) {
+  int b = 42;
+  EXPECT_CALL(element, Call(&b)).WillOnce(::testing::ReturnRef(b));
+  EXPECT_CALL(construct, Call(&alloc, &a, b));
+  EXPECT_CALL(destroy, Call(&alloc, &b));
+  hash_policy_traits<PolicyWithoutOptionalOps>::transfer(&alloc, &a, &b);
+}
+
+TEST_F(Test, with_transfer) {
+  int b = 42;
+  EXPECT_CALL(transfer, Call(&alloc, &a, &b));
+  hash_policy_traits<PolicyWithOptionalOps>::transfer(&alloc, &a, &b);
+}
+
+}  // namespace
+}  // namespace container_internal
+}  // inline namespace lts_2018_12_18
+}  // namespace absl