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/*
*
* Copyright 2017 gRPC 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 "src/core/lib/slice/slice_hash_table.h"
#include <string.h>
#include <vector>
#include <gtest/gtest.h>
#include <grpc/support/alloc.h>
#include <grpc/support/log.h>
#include <grpc/support/string_util.h>
#include "src/core/lib/iomgr/exec_ctx.h"
#include "src/core/lib/slice/slice_internal.h"
#include "test/core/util/test_config.h"
namespace grpc_core {
namespace {
typedef SliceHashTable<UniquePtr<char>> TestHashTable;
struct TestEntry {
const char* key;
const char* value;
};
void CheckValues(const std::vector<TestEntry>& input,
const TestHashTable& table) {
for (const TestEntry& expected : input) {
grpc_slice key = grpc_slice_from_static_string(expected.key);
const UniquePtr<char>* actual = table.Get(key);
ASSERT_NE(actual, nullptr);
EXPECT_STREQ(expected.value, actual->get());
grpc_slice_unref(key);
}
}
void CheckNonExistentValue(const char* key_string, const TestHashTable& table) {
grpc_slice key = grpc_slice_from_static_string(key_string);
ASSERT_EQ(nullptr, table.Get(key));
grpc_slice_unref(key);
}
void PopulateEntries(const std::vector<TestEntry>& input,
TestHashTable::Entry* output) {
for (size_t i = 0; i < input.size(); ++i) {
output[i].key = grpc_slice_from_copied_string(input[i].key);
output[i].value = UniquePtr<char>(gpr_strdup(input[i].value));
}
}
RefCountedPtr<TestHashTable> CreateTableFromEntries(
const std::vector<TestEntry>& test_entries,
TestHashTable::ValueCmp value_cmp) {
TestHashTable::Entry* entries = static_cast<TestHashTable::Entry*>(
gpr_zalloc(sizeof(*entries) * test_entries.size()));
PopulateEntries(test_entries, entries);
RefCountedPtr<TestHashTable> table =
TestHashTable::Create(test_entries.size(), entries, value_cmp);
gpr_free(entries);
return table;
}
TEST(SliceHashTable, Basic) {
const std::vector<TestEntry> test_entries = {
{"key_0", "value_0"}, {"key_1", "value_1"}, {"key_2", "value_2"},
{"key_3", "value_3"}, {"key_4", "value_4"}, {"key_5", "value_5"},
{"key_6", "value_6"}, {"key_7", "value_7"}, {"key_8", "value_8"},
{"key_9", "value_9"}, {"key_10", "value_10"}, {"key_11", "value_11"},
{"key_12", "value_12"}, {"key_13", "value_13"}, {"key_14", "value_14"},
{"key_15", "value_15"}, {"key_16", "value_16"}, {"key_17", "value_17"},
{"key_18", "value_18"}, {"key_19", "value_19"}, {"key_20", "value_20"},
{"key_21", "value_21"}, {"key_22", "value_22"}, {"key_23", "value_23"},
{"key_24", "value_24"}, {"key_25", "value_25"}, {"key_26", "value_26"},
{"key_27", "value_27"}, {"key_28", "value_28"}, {"key_29", "value_29"},
{"key_30", "value_30"}, {"key_31", "value_31"}, {"key_32", "value_32"},
{"key_33", "value_33"}, {"key_34", "value_34"}, {"key_35", "value_35"},
{"key_36", "value_36"}, {"key_37", "value_37"}, {"key_38", "value_38"},
{"key_39", "value_39"}, {"key_40", "value_40"}, {"key_41", "value_41"},
{"key_42", "value_42"}, {"key_43", "value_43"}, {"key_44", "value_44"},
{"key_45", "value_45"}, {"key_46", "value_46"}, {"key_47", "value_47"},
{"key_48", "value_48"}, {"key_49", "value_49"}, {"key_50", "value_50"},
{"key_51", "value_51"}, {"key_52", "value_52"}, {"key_53", "value_53"},
{"key_54", "value_54"}, {"key_55", "value_55"}, {"key_56", "value_56"},
{"key_57", "value_57"}, {"key_58", "value_58"}, {"key_59", "value_59"},
{"key_60", "value_60"}, {"key_61", "value_61"}, {"key_62", "value_62"},
{"key_63", "value_63"}, {"key_64", "value_64"}, {"key_65", "value_65"},
{"key_66", "value_66"}, {"key_67", "value_67"}, {"key_68", "value_68"},
{"key_69", "value_69"}, {"key_70", "value_70"}, {"key_71", "value_71"},
{"key_72", "value_72"}, {"key_73", "value_73"}, {"key_74", "value_74"},
{"key_75", "value_75"}, {"key_76", "value_76"}, {"key_77", "value_77"},
{"key_78", "value_78"}, {"key_79", "value_79"}, {"key_80", "value_80"},
{"key_81", "value_81"}, {"key_82", "value_82"}, {"key_83", "value_83"},
{"key_84", "value_84"}, {"key_85", "value_85"}, {"key_86", "value_86"},
{"key_87", "value_87"}, {"key_88", "value_88"}, {"key_89", "value_89"},
{"key_90", "value_90"}, {"key_91", "value_91"}, {"key_92", "value_92"},
{"key_93", "value_93"}, {"key_94", "value_94"}, {"key_95", "value_95"},
{"key_96", "value_96"}, {"key_97", "value_97"}, {"key_98", "value_98"},
{"key_99", "value_99"},
};
RefCountedPtr<TestHashTable> table =
CreateTableFromEntries(test_entries, nullptr);
// Check contents of table.
CheckValues(test_entries, *table);
CheckNonExistentValue("XX", *table);
}
int StringCmp(const UniquePtr<char>& a, const UniquePtr<char>& b) {
return strcmp(a.get(), b.get());
}
int PointerCmp(const UniquePtr<char>& a, const UniquePtr<char>& b) {
return GPR_ICMP(a.get(), b.get());
}
TEST(SliceHashTable, CmpEqual) {
const std::vector<TestEntry> test_entries_a = {
{"key_0", "value_0"}, {"key_1", "value_1"}, {"key_2", "value_2"}};
RefCountedPtr<TestHashTable> table_a =
CreateTableFromEntries(test_entries_a, StringCmp);
const std::vector<TestEntry> test_entries_b = {
{"key_0", "value_0"}, {"key_1", "value_1"}, {"key_2", "value_2"}};
RefCountedPtr<TestHashTable> table_b =
CreateTableFromEntries(test_entries_b, StringCmp);
// table_a equals itself.
EXPECT_EQ(0, TestHashTable::Cmp(*table_a, *table_a));
// table_a equals table_b.
EXPECT_EQ(0, TestHashTable::Cmp(*table_a, *table_b));
}
TEST(SliceHashTable, CmpDifferentSizes) {
// table_a has 3 entries, table_b has only 2.
const std::vector<TestEntry> test_entries_a = {
{"key_0", "value_0"}, {"key_1", "value_1"}, {"key_2", "value_2"}};
RefCountedPtr<TestHashTable> table_a =
CreateTableFromEntries(test_entries_a, StringCmp);
const std::vector<TestEntry> test_entries_b = {{"key_0", "value_0"},
{"key_1", "value_1"}};
RefCountedPtr<TestHashTable> table_b =
CreateTableFromEntries(test_entries_b, StringCmp);
EXPECT_GT(TestHashTable::Cmp(*table_a, *table_b), 0);
EXPECT_LT(TestHashTable::Cmp(*table_b, *table_a), 0);
}
TEST(SliceHashTable, CmpDifferentKey) {
// One key doesn't match and is lexicographically "smaller".
const std::vector<TestEntry> test_entries_a = {
{"key_0", "value_0"}, {"key_1", "value_1"}, {"key_2", "value_2"}};
RefCountedPtr<TestHashTable> table_a =
CreateTableFromEntries(test_entries_a, StringCmp);
const std::vector<TestEntry> test_entries_b = {
{"key_zz", "value_0"}, {"key_1", "value_1"}, {"key_2", "value_2"}};
RefCountedPtr<TestHashTable> table_b =
CreateTableFromEntries(test_entries_b, StringCmp);
EXPECT_GT(TestHashTable::Cmp(*table_a, *table_b), 0);
EXPECT_LT(TestHashTable::Cmp(*table_b, *table_a), 0);
}
TEST(SliceHashTable, CmpDifferentValue) {
// One value doesn't match.
const std::vector<TestEntry> test_entries_a = {
{"key_0", "value_0"}, {"key_1", "value_1"}, {"key_2", "value_2"}};
RefCountedPtr<TestHashTable> table_a =
CreateTableFromEntries(test_entries_a, StringCmp);
const std::vector<TestEntry> test_entries_b = {
{"key_0", "value_z"}, {"key_1", "value_1"}, {"key_2", "value_2"}};
RefCountedPtr<TestHashTable> table_b =
CreateTableFromEntries(test_entries_b, StringCmp);
EXPECT_LT(TestHashTable::Cmp(*table_a, *table_b), 0);
EXPECT_GT(TestHashTable::Cmp(*table_b, *table_a), 0);
}
TEST(SliceHashTable, CmpDifferentCmpFunctions) {
// Same values but different "equals" functions.
const std::vector<TestEntry> test_entries_a = {
{"key_0", "value_0"}, {"key_1", "value_1"}, {"key_2", "value_2"}};
RefCountedPtr<TestHashTable> table_a =
CreateTableFromEntries(test_entries_a, StringCmp);
const std::vector<TestEntry> test_entries_b = {
{"key_0", "value_0"}, {"key_1", "value_1"}, {"key_2", "value_2"}};
RefCountedPtr<TestHashTable> table_b =
CreateTableFromEntries(test_entries_b, PointerCmp);
EXPECT_NE(TestHashTable::Cmp(*table_a, *table_b), 0);
}
TEST(SliceHashTable, CmpEmptyKeysDifferentValue) {
// Same (empty) key, different values.
const std::vector<TestEntry> test_entries_a = {{"", "value_0"}};
RefCountedPtr<TestHashTable> table_a =
CreateTableFromEntries(test_entries_a, StringCmp);
const std::vector<TestEntry> test_entries_b = {{"", "value_1"}};
RefCountedPtr<TestHashTable> table_b =
CreateTableFromEntries(test_entries_b, PointerCmp);
EXPECT_NE(TestHashTable::Cmp(*table_a, *table_b), 0);
}
} // namespace
} // namespace grpc_core
int main(int argc, char** argv) {
::testing::InitGoogleTest(&argc, argv);
grpc::testing::TestEnvironment env(argc, argv);
grpc_core::ExecCtx::GlobalInit();
int result = RUN_ALL_TESTS();
grpc_core::ExecCtx::GlobalShutdown();
return result;
}
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