test: core test using multi-threads

test/CMakeLists.txt

@@ -55,7 +55,7 @@ add_test(NAME codec COMMAND test_codec)
 
 set(TEST_CORE_SRC core/core.cc)
 add_executable(test_core ${TEST_CORE_SRC})
-target_link_libraries(test_core ${TEST_DEPS} absl::flat_hash_map)
+target_link_libraries(test_core ${TEST_DEPS} tiny_pool absl::flat_hash_map)
 add_test(NAME core COMMAND test_core)
 
 #######################################################################################

test/core/core.cc

@@ -1,8 +1,9 @@
-#include <unordered_set>
 #include "core.h"
 #include "group.h"
 #include "all_cases.h"
+#include "tiny_pool.h"
 #include "gtest/gtest.h"
+#include "absl/container/flat_hash_set.h"
 
 using klotski::RawCode;
 using klotski::AllCases;
@@ -11,25 +12,27 @@ using klotski::GroupType;
 using klotski::TYPE_ID_LIMIT;
 
 TEST(Core, next_cases) {
-    auto test = [](uint32_t type_id) {
-        auto raw_codes = std::unordered_set<uint64_t>();
+    auto test = [](GroupType type_id) {
+        auto raw_codes = absl::flat_hash_set<uint64_t>();
         raw_codes.reserve(klotski::ALL_CASES_SIZE_SUM);
-        for (auto &&common_code: GroupType(type_id).cases()) { // load all cases in a type
+        for (auto &&common_code: type_id.cases()) { // load all cases in a type
             raw_codes.emplace(common_code.to_raw_code().unwrap());
         }
 
         auto core = klotski::Core(
             [&raw_codes](auto &&code, auto &&mask) {
-                EXPECT_NE(raw_codes.find(code), raw_codes.end()); // verify next case
-                EXPECT_EQ(mask >> __builtin_ctzll(mask), 0b111); // verify mask
+                EXPECT_NE(raw_codes.find(code), raw_codes.end()); // next case existed
+                EXPECT_EQ(mask >> __builtin_ctzll(mask), 0b111); // mask format
             }
         );
         for (auto &&raw_code: raw_codes) {
             core.next_cases(raw_code, 0); // search next cases
         }
     };
-    // TODO: using multi-threads
+
+    auto pool = TinyPool();
     for (uint32_t type_id = 0; type_id < TYPE_ID_LIMIT; ++type_id) {
-        test(type_id);
+        pool.submit(test, GroupType(type_id)); // test all type_ids
     }
+    pool.boot().join();
 }