TEST_F(HashBuildTest, check_equality) {
std::shared_ptr<AbstractTable> t = Loader::shortcuts::load("test/10_30_group.tbl");
HashBuild hb;
hb.addInput(t);
hb.addField(1);
hb.setKey("groupby");
hb.execute();
auto hash = std::dynamic_pointer_cast<const SingleAggregateHashTable >(hb.getResultHashTable());
auto t1 = storage::TableRangeView::create(t, 0, 4);
auto t2 = storage::TableRangeView::create(t, 5, 9);
HashBuild hb1;
hb1.addInput(t1);
hb1.addField(1);
hb1.setKey("groupby");
hb1.execute();
auto hash1 = std::dynamic_pointer_cast<const SingleAggregateHashTable >(hb1.getResultHashTable());
HashBuild hb2;
hb2.addInput(t2);
hb2.addField(1);
hb2.setKey("groupby");
hb2.execute();
auto hash2 = std::dynamic_pointer_cast<const SingleAggregateHashTable >(hb2.getResultHashTable());
ASSERT_TRUE(check_equality(hash, hash));
ASSERT_FALSE(check_equality(hash1, hash2));
}
TEST_F(HashBuildTest, merge_one_table_test) {
std::shared_ptr<AbstractTable> t = Loader::shortcuts::load("test/10_30_group.tbl");
HashBuild hb;
hb.addInput(t);
hb.addField(1);
hb.setKey("groupby");
hb.execute();
auto hash1 = std::dynamic_pointer_cast<const SingleAggregateHashTable >(hb.getResultHashTable());
MergeHashTables mht;
mht.addInput(hash1);
mht.setKey("groupby");
mht.execute();
auto hash2 = std::dynamic_pointer_cast<const SingleAggregateHashTable >(mht.getResultHashTable());
ASSERT_TRUE(check_equality(hash1, hash2));
}
TEST_F(HashBuildTest, merge_two_tables_test) {
// reference hash Table
std::shared_ptr<AbstractTable> t = Loader::shortcuts::load("test/10_30_group.tbl");
HashBuild hb;
hb.addInput(t);
hb.addField(1);
hb.setKey("groupby");
hb.execute();
auto hash = std::dynamic_pointer_cast<const SingleAggregateHashTable >(hb.getResultHashTable());
//test to merge two tables
auto t1 = storage::TableRangeView::create(t, 0, 5);
auto t2 = storage::TableRangeView::create(t, 5, 10);
HashBuild hb1;
hb1.addInput(t1);
hb1.addField(1);
hb1.setKey("groupby");
hb1.execute();
auto hash1 = std::dynamic_pointer_cast<const SingleAggregateHashTable >(hb1.getResultHashTable());
HashBuild hb2;
hb2.addInput(t2);
hb2.addField(1);
hb2.setKey("groupby");
hb2.execute();
auto hash2 = std::dynamic_pointer_cast<const SingleAggregateHashTable >(hb2.getResultHashTable());
MergeHashTables mht;
mht.addInput(hash1);
mht.addInput(hash2);
mht.setKey("groupby");
mht.execute();
auto hash3 = std::dynamic_pointer_cast<const SingleAggregateHashTable >(mht.getResultHashTable());
ASSERT_EQ(hash->size(), hash3->size());
ASSERT_EQ(hash->numKeys(), hash3->numKeys());
}
