Refactoring progress

1 files changed, 391 insertions, 0 deletions

diff --git a/tests/alias_tests.cpp b/tests/alias_tests.cpp
new file mode 100644
index 0000000..b9e678b
--- /dev/null
+++ b/tests/alias_tests.cpp
@@ -0,0 +1,391 @@
+/*
+ * tests/alias_tests.cpp
+ *
+ * Unit tests for Alias shard
+ *
+ * Copyright (C) 2023 Douglas Rumbaugh <drumbaugh@psu.edu> 
+ *                    Dong Xie <dongx@psu.edu>
+ *
+ * All rights reserved. Published under the Modified BSD License.
+ *
+ */
+
+#include "shard/Alias.h"
+#include "query/wss.h"
+#include "testing.h"
+
+#include <check.h>
+
+using namespace de;
+
+typedef Alias<WRec> Shard;
+
+START_TEST(t_mbuffer_init)
+{
+    auto buffer = new MutableBuffer<WRec>(1024, 1024);
+    for (uint64_t i = 512; i > 0; i--) {
+        uint32_t v = i;
+        buffer->append({i,v, 1});
+    }
+    
+    for (uint64_t i = 1; i <= 256; ++i) {
+        uint32_t v = i;
+        buffer->append({i, v, 1}, true);
+    }
+
+    for (uint64_t i = 257; i <= 512; ++i) {
+        uint32_t v = i + 1;
+        buffer->append({i, v, 1});
+    }
+
+    Shard* shard = new Shard(buffer);
+    ck_assert_uint_eq(shard->get_record_count(), 512);
+
+    delete buffer;
+    delete shard;
+}
+
+
+START_TEST(t_alias_init)
+{
+    size_t n = 512;
+    auto mbuffer1 = create_test_mbuffer<WRec>(n);
+    auto mbuffer2 = create_test_mbuffer<WRec>(n);
+    auto mbuffer3 = create_test_mbuffer<WRec>(n);
+
+    auto shard1 = new Shard(mbuffer1);
+    auto shard2 = new Shard(mbuffer2);
+    auto shard3 = new Shard(mbuffer3);
+
+    Shard* shards[3] = {shard1, shard2, shard3};
+    auto shard4 = new Shard(shards, 3);
+
+    ck_assert_int_eq(shard4->get_record_count(), n * 3);
+    ck_assert_int_eq(shard4->get_tombstone_count(), 0);
+
+    size_t total_cnt = 0;
+    size_t shard1_idx = 0;
+    size_t shard2_idx = 0;
+    size_t shard3_idx = 0;
+
+    for (size_t i = 0; i < shard4->get_record_count(); ++i) {
+        auto rec1 = shard1->get_record_at(shard1_idx);
+        auto rec2 = shard2->get_record_at(shard2_idx);
+        auto rec3 = shard3->get_record_at(shard3_idx);
+
+        auto cur_rec = shard4->get_record_at(i);
+
+        if (shard1_idx < n && cur_rec->rec == rec1->rec) {
+            ++shard1_idx;
+        } else if (shard2_idx < n && cur_rec->rec == rec2->rec) {
+            ++shard2_idx;
+        } else if (shard3_idx < n && cur_rec->rec == rec3->rec) {
+            ++shard3_idx;
+        } else {
+           assert(false);
+        }
+    }
+
+    delete mbuffer1;
+    delete mbuffer2;
+    delete mbuffer3;
+
+    delete shard1;
+    delete shard2;
+    delete shard3;
+    delete shard4;
+}
+
+
+START_TEST(t_point_lookup) 
+{
+    size_t n = 10000;
+
+    auto buffer = create_double_seq_mbuffer<WRec>(n, false);
+    auto alias = Shard(buffer);
+
+    for (size_t i=0; i<n; i++) {
+        WRec r;
+        auto rec = (buffer->get_data() + i);
+        r.key = rec->rec.key;
+        r.value = rec->rec.value;
+
+        auto result = alias.point_lookup(r);
+        ck_assert_ptr_nonnull(result);
+        ck_assert_int_eq(result->rec.key, r.key);
+        ck_assert_int_eq(result->rec.value, r.value);
+    }
+
+    delete buffer;
+}
+END_TEST
+
+
+START_TEST(t_point_lookup_miss) 
+{
+    size_t n = 10000;
+
+    auto buffer = create_double_seq_mbuffer<WRec>(n, false);
+    auto alias = Shard(buffer);
+
+    for (size_t i=n + 100; i<2*n; i++) {
+        WRec r;
+        r.key = i;
+        r.value = i;
+
+        auto result = alias.point_lookup(r);
+        ck_assert_ptr_null(result);
+    }
+
+    delete buffer;
+}
+
+START_TEST(t_full_cancelation)
+{
+    size_t n = 100;
+    auto buffer = create_double_seq_mbuffer<WRec>(n, false);
+    auto buffer_ts = create_double_seq_mbuffer<WRec>(n, true);
+
+    Shard* shard = new Shard(buffer);
+    Shard* shard_ts = new Shard(buffer_ts);
+
+    ck_assert_int_eq(shard->get_record_count(), n);
+    ck_assert_int_eq(shard->get_tombstone_count(), 0);
+    ck_assert_int_eq(shard_ts->get_record_count(), n);
+    ck_assert_int_eq(shard_ts->get_tombstone_count(), n);
+
+    Shard* shards[] = {shard, shard_ts};
+
+    Shard* merged = new Shard(shards, 2);
+
+    ck_assert_int_eq(merged->get_tombstone_count(), 0);
+    ck_assert_int_eq(merged->get_record_count(), 0);
+
+    delete buffer;
+    delete buffer_ts;
+    delete shard;
+    delete shard_ts;
+    delete merged;
+}
+END_TEST
+
+
+START_TEST(t_alias_query)
+{
+    size_t n=1000;
+    auto buffer = create_weighted_mbuffer<WRec>(n);
+
+    Shard* shard = new Shard(buffer);
+
+    size_t k = 1000;
+
+    size_t cnt[3] = {0};
+    wss:Parms<WRec> parms = {k};
+    parms.rng = gsl_rng_alloc(gsl_rng_mt19937);
+
+    size_t total_samples = 0;
+
+    for (size_t i=0; i<1000; i++) {
+        auto state = wss::Query<Shard, WRec>::get_query_state(shard, &parms);
+        ((wss::State<WRec> *) state)->sample_size = k;
+        auto result = wss::Query<Shard, WRec>::query(shard, state, &parms);
+
+        total_samples += result.size();
+
+        for (size_t j=0; j<result.size(); j++) {
+            cnt[result[j].rec.key - 1]++;
+        }
+
+        wss::Query<Shard, WRec>::delete_query_state(state);
+    }
+
+    ck_assert(roughly_equal(cnt[0], (double) total_samples/4.0, total_samples, .05));
+    ck_assert(roughly_equal(cnt[1], (double) total_samples/4.0, total_samples, .05));
+    ck_assert(roughly_equal(cnt[2], (double) total_samples/2.0, total_samples, .05));
+
+    gsl_rng_free(parms.rng);
+    delete shard;
+    delete buffer;
+}
+END_TEST
+
+
+START_TEST(t_alias_query_merge)
+{
+    size_t n=1000;
+    auto buffer = create_weighted_mbuffer<WRec>(n);
+
+    Shard* shard = new Shard(buffer);
+
+    uint64_t lower_key = 0;
+    uint64_t upper_key = 5;
+
+    size_t k = 1000;
+
+    size_t cnt[3] = {0};
+    wss:Parms<WRec> parms = {k};
+    parms.rng = gsl_rng_alloc(gsl_rng_mt19937);
+
+    std::vector<std::vector<Wrapped<WRec>>> results(2);
+
+    for (size_t i=0; i<1000; i++) {
+        auto state1 = wss::Query<Shard, WRec>::get_query_state(shard, &parms);
+        ((wss::State<WRec> *) state1)->sample_size = k;
+        results[0] = wss::Query<Shard, WRec>::query(shard, state1, &parms);
+
+        auto state2 = wss::Query<Shard, WRec>::get_query_state(shard, &parms);
+        ((wss::State<WRec> *) state2)->sample_size = k;
+        results[1] = wss::Query<Shard, WRec>::query(shard, state2, &parms);
+
+        wss::Query<Shard, WRec>::delete_query_state(state1);
+        wss::Query<Shard, WRec>::delete_query_state(state2);
+    }
+
+    auto merged = wss::Query<Shard, WRec>::merge(results, nullptr);
+
+    ck_assert_int_eq(merged.size(), 2*k);
+    for (size_t i=0; i<merged.size(); i++) {
+        ck_assert_int_ge(merged[i].key, lower_key);
+        ck_assert_int_le(merged[i].key, upper_key);
+    }
+
+    gsl_rng_free(parms.rng);
+    delete shard;
+    delete buffer;
+}
+END_TEST
+
+
+START_TEST(t_alias_buffer_query_scan)
+{
+    size_t n=1000;
+    auto buffer = create_weighted_mbuffer<WRec>(n);
+
+    uint64_t lower_key = 0;
+    uint64_t upper_key = 5;
+
+    size_t k = 1000;
+
+    size_t cnt[3] = {0};
+    wss:Parms<WRec> parms = {k};
+    parms.rng = gsl_rng_alloc(gsl_rng_mt19937);
+
+    size_t total_samples = 0;
+
+    for (size_t i=0; i<1000; i++) {
+        auto state = wss::Query<Shard, WRec, false>::get_buffer_query_state(buffer, &parms);
+        ((wss::BufferState<WRec> *) state)->sample_size = k;
+        auto result = wss::Query<Shard, WRec, false>::buffer_query(buffer, state, &parms);
+        total_samples += result.size();
+
+        for (size_t j=0; j<result.size(); j++) {
+            cnt[result[j].rec.key - 1]++;
+        }
+
+        wss::Query<Shard, WRec, false>::delete_buffer_query_state(state);
+    }
+
+    ck_assert(roughly_equal(cnt[0], (double) total_samples/4.0, total_samples, .05));
+    ck_assert(roughly_equal(cnt[1], (double) total_samples/4.0, total_samples, .05));
+    ck_assert(roughly_equal(cnt[2], (double) total_samples/2.0, total_samples, .05));
+
+    gsl_rng_free(parms.rng);
+    delete buffer;
+}
+END_TEST
+
+
+START_TEST(t_alias_buffer_query_rejection)
+{
+    size_t n=1000;
+    auto buffer = create_weighted_mbuffer<WRec>(n);
+
+    uint64_t lower_key = 0;
+    uint64_t upper_key = 5;
+
+    size_t k = 1000;
+
+    size_t cnt[3] = {0};
+    wss:Parms<WRec> parms = {k};
+    parms.rng = gsl_rng_alloc(gsl_rng_mt19937);
+
+    size_t total_samples = 0;
+
+    for (size_t i=0; i<1000; i++) {
+        auto state = wss::Query<Shard, WRec>::get_buffer_query_state(buffer, &parms);
+        ((wss::BufferState<WRec> *) state)->sample_size = k;
+        auto result = wss::Query<Shard, WRec>::buffer_query(buffer, state, &parms);
+
+        total_samples += result.size();
+
+        for (size_t j=0; j<result.size(); j++) {
+            cnt[result[j].rec.key - 1]++;
+        }
+
+        wss::Query<Shard, WRec>::delete_buffer_query_state(state);
+    }
+
+    ck_assert(roughly_equal(cnt[0], (double) total_samples/4.0, total_samples, .1));
+    ck_assert(roughly_equal(cnt[1], (double) total_samples/4.0, total_samples, .1));
+    ck_assert(roughly_equal(cnt[2], (double) total_samples/2.0, total_samples, .1));
+
+    gsl_rng_free(parms.rng);
+    delete buffer;
+}
+END_TEST
+
+
+Suite *unit_testing()
+{
+    Suite *unit = suite_create("Alias Shard Unit Testing");
+
+    TCase *create = tcase_create("de::Alias constructor Testing");
+    tcase_add_test(create, t_mbuffer_init);
+    tcase_add_test(create, t_alias_init);
+    tcase_set_timeout(create, 100);
+    suite_add_tcase(unit, create);
+
+
+    TCase *tombstone = tcase_create("de:Alias::tombstone cancellation Testing");
+    tcase_add_test(tombstone, t_full_cancelation);
+    suite_add_tcase(unit, tombstone);
+
+
+    TCase *lookup = tcase_create("de:Alias:point_lookup Testing");
+    tcase_add_test(lookup, t_point_lookup);
+    tcase_add_test(lookup, t_point_lookup_miss);
+    suite_add_tcase(unit, lookup);
+
+
+
+    TCase *sampling = tcase_create("de:Alias::AliasQuery Testing");
+    tcase_add_test(sampling, t_alias_query);
+    tcase_add_test(sampling, t_alias_query_merge);
+    tcase_add_test(sampling, t_alias_buffer_query_rejection);
+    tcase_add_test(sampling, t_alias_buffer_query_scan);
+    suite_add_tcase(unit, sampling);
+
+    return unit;
+}
+
+
+int shard_unit_tests()
+{
+    int failed = 0;
+    Suite *unit = unit_testing();
+    SRunner *unit_shardner = srunner_create(unit);
+
+    srunner_run_all(unit_shardner, CK_NORMAL);
+    failed = srunner_ntests_failed(unit_shardner);
+    srunner_free(unit_shardner);
+
+    return failed;
+}
+
+
+int main() 
+{
+    int unit_failed = shard_unit_tests();
+
+    return (unit_failed == 0) ? EXIT_SUCCESS : EXIT_FAILURE;
+}