src/trace_processor/tables/py_tables_unittest.cc - third_party/perfetto - Git at Google

 /*
  * Copyright (C) 2019 The Android Open Source Project
  *
  * 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 <cstdint>
 #include <utility>
 #include <vector>

 #include "src/trace_processor/containers/string_pool.h"
 #include "src/trace_processor/db/column.h"
 #include "src/trace_processor/db/column/types.h"
 #include "src/trace_processor/db/column_storage.h"
 #include "src/trace_processor/tables/py_tables_unittest_py.h"

 #include "test/gtest_and_gmock.h"

 namespace perfetto::trace_processor::tables {

 TestEventTable::~TestEventTable() = default;
 TestEventChildTable::~TestEventChildTable() = default;
 TestSliceTable::~TestSliceTable() = default;
 TestArgsTable::~TestArgsTable() = default;

 namespace {

 class PyTablesUnittest : public ::testing::Test {
  protected:
   StringPool pool_;

   TestEventTable event_{&pool_};
   TestEventChildTable event_child_{&pool_, &event_};
   TestSliceTable slice_{&pool_, &event_};
   TestArgsTable args_{&pool_};
 };

 TEST_F(PyTablesUnittest, EventTableProprties) {
   ASSERT_STREQ(TestEventTable::Name(), "event");

   ASSERT_EQ(TestEventTable::ColumnIndex::id, 0u);
   ASSERT_EQ(TestEventTable::ColumnIndex::type, 1u);
   ASSERT_EQ(TestEventTable::ColumnIndex::ts, 2u);
   ASSERT_EQ(TestEventTable::ColumnIndex::arg_set_id, 3u);

   ASSERT_EQ(TestEventTable::ColumnFlag::ts,
             ColumnLegacy::Flag::kSorted | ColumnLegacy::Flag::kNonNull);
   ASSERT_EQ(TestEventTable::ColumnFlag::arg_set_id,
             ColumnLegacy::Flag::kNonNull);
 }

 TEST_F(PyTablesUnittest, ArgsTableProprties) {
   ASSERT_STREQ(TestArgsTable::Name(), "args");

   ASSERT_EQ(TestArgsTable::ColumnIndex::id, 0u);
   ASSERT_EQ(TestArgsTable::ColumnIndex::type, 1u);
   ASSERT_EQ(TestArgsTable::ColumnIndex::arg_set_id, 2u);

   ASSERT_EQ(TestArgsTable::ColumnFlag::arg_set_id,
             ColumnLegacy::Flag::kSorted | ColumnLegacy::Flag::kSetId |
                 ColumnLegacy::Flag::kNonNull);
 }

 TEST_F(PyTablesUnittest, InsertEvent) {
   event_.Insert(TestEventTable::Row(100, 0));

   ASSERT_EQ(pool_.Get(event_[0].type()).ToStdString(), "event");
   ASSERT_EQ(event_[0].ts(), 100);
   ASSERT_EQ(event_[0].arg_set_id(), 0u);
 }

 TEST_F(PyTablesUnittest, InsertEventSpecifyCols) {
   TestEventTable::Row row;
   row.ts = 100;
   row.arg_set_id = 0;
   event_.Insert(row);

   ASSERT_EQ(pool_.Get(event_[0].type()).ToStdString(), "event");
   ASSERT_EQ(event_[0].ts(), 100);
   ASSERT_EQ(event_[0].arg_set_id(), 0u);
 }

 TEST_F(PyTablesUnittest, MutableColumn) {
   event_.Insert(TestEventTable::Row(100, 0));

   ASSERT_EQ(event_[0].ts(), 100);
   ASSERT_EQ(event_[0].arg_set_id(), 0u);
 }

 TEST_F(PyTablesUnittest, ShrinkToFit) {
   event_.Insert(TestEventTable::Row(100, 0));
   event_.ShrinkToFit();

   // Unfortunately given the loose restrictions on shrink_to_fit provided by the
   // standard library, we cannot really assert anything. Just call the method to
   // ensure it doesn't cause crashes.
 }

 TEST_F(PyTablesUnittest, FindById) {
   auto id_and_row = event_.Insert(TestEventTable::Row(100, 0));

   auto row_ref = event_.FindById(id_and_row.id);
   ASSERT_EQ(row_ref->ToRowNumber().row_number(), id_and_row.row);
   ASSERT_EQ(row_ref->id(), id_and_row.id);
   ASSERT_EQ(row_ref->ts(), 100);
   ASSERT_EQ(row_ref->arg_set_id(), 0u);
 }

 TEST_F(PyTablesUnittest, ChildFindById) {
   event_.Insert(TestEventTable::Row(50, 0));
   auto id_and_row = slice_.Insert(TestSliceTable::Row(100, 0, 10));

   auto row_ref = slice_.FindById(id_and_row.id);
   ASSERT_EQ(row_ref->ToRowNumber().row_number(), id_and_row.row);
   ASSERT_EQ(row_ref->id(), id_and_row.id);
   ASSERT_EQ(row_ref->ts(), 100);
   ASSERT_EQ(row_ref->arg_set_id(), 0u);
   ASSERT_EQ(row_ref->dur(), 10u);
 }
 TEST_F(PyTablesUnittest, ChildTableStatics) {
   ASSERT_EQ(TestSliceTable::ColumnFlag::dur, ColumnLegacy::Flag::kNonNull);
   ASSERT_EQ(TestSliceTable::ColumnIndex::id, 0u);
   ASSERT_EQ(TestSliceTable::ColumnIndex::type, 1u);
   ASSERT_EQ(TestSliceTable::ColumnIndex::ts, 2u);
   ASSERT_EQ(TestSliceTable::ColumnIndex::arg_set_id, 3u);
   ASSERT_EQ(TestSliceTable::ColumnIndex::dur, 4u);
 }

 TEST_F(PyTablesUnittest, ParentAndChildInsert) {
   event_.Insert(TestEventTable::Row(50, 0));
   slice_.Insert(TestSliceTable::Row(100, 1, 10));
   event_.Insert(TestEventTable::Row(150, 2));
   slice_.Insert(TestSliceTable::Row(200, 3, 20));

   ASSERT_EQ(event_.row_count(), 4u);
   ASSERT_EQ(event_[0].id(), TestEventTable::Id{0});
   ASSERT_EQ(pool_.Get(event_[0].type()), "event");
   ASSERT_EQ(event_[0].ts(), 50);

   ASSERT_EQ(event_[1].id(), TestEventTable::Id{1});
   ASSERT_EQ(pool_.Get(event_[1].type()), "slice");
   ASSERT_EQ(event_[1].ts(), 100);

   ASSERT_EQ(event_[2].id(), TestEventTable::Id{2});
   ASSERT_EQ(pool_.Get(event_[2].type()), "event");
   ASSERT_EQ(event_[2].ts(), 150);

   ASSERT_EQ(event_[3].id(), TestEventTable::Id{3});
   ASSERT_EQ(pool_.Get(event_[3].type()), "slice");
   ASSERT_EQ(event_[3].ts(), 200);

   ASSERT_EQ(slice_.row_count(), 2u);
   ASSERT_EQ(slice_[0].id(), TestEventTable::Id{1});
   ASSERT_EQ(pool_.Get(slice_[0].type()), "slice");
   ASSERT_EQ(slice_[0].ts(), 100);
   ASSERT_EQ(slice_[0].dur(), 10);

   ASSERT_EQ(slice_[1].id(), TestEventTable::Id{3});
   ASSERT_EQ(pool_.Get(slice_[1].type()), "slice");
   ASSERT_EQ(slice_[1].ts(), 200);
   ASSERT_EQ(slice_[1].dur(), 20);
 }

 TEST_F(PyTablesUnittest, Extend) {
   event_.Insert(TestEventTable::Row(50, 0));
   event_.Insert(TestEventTable::Row(100, 1));
   event_.Insert(TestEventTable::Row(150, 2));

   ColumnStorage<int64_t> dur;
   dur.Append(512);
   dur.Append(1024);
   dur.Append(2048);

   auto slice_ext = TestSliceTable::ExtendParent(event_, std::move(dur));
   ASSERT_EQ(slice_ext->row_count(), 3u);
   ASSERT_EQ((*slice_ext)[0].ts(), 50);
   ASSERT_EQ((*slice_ext)[0].dur(), 512);
   ASSERT_EQ((*slice_ext)[1].ts(), 100);
   ASSERT_EQ((*slice_ext)[1].dur(), 1024);
   ASSERT_EQ((*slice_ext)[2].ts(), 150);
   ASSERT_EQ((*slice_ext)[2].dur(), 2048);
 }

 TEST_F(PyTablesUnittest, SelectAndExtend) {
   event_.Insert(TestEventTable::Row(50, 0));
   event_.Insert(TestEventTable::Row(100, 1));
   event_.Insert(TestEventTable::Row(150, 2));

   std::vector<TestEventTable::RowNumber> rows;
   rows.emplace_back(1);
   ColumnStorage<int64_t> dur;
   dur.Append(1024);

   auto slice_ext = TestSliceTable::SelectAndExtendParent(
       event_, std::move(rows), std::move(dur));
   ASSERT_EQ(slice_ext->row_count(), 1u);
   ASSERT_EQ((*slice_ext)[0].ts(), 100);
   ASSERT_EQ((*slice_ext)[0].dur(), 1024);
 }

 TEST_F(PyTablesUnittest, SetIdColumns) {
   StringPool pool;
   TestArgsTable table{&pool};

   table.Insert(TestArgsTable::Row(0, 100));
   table.Insert(TestArgsTable::Row(0, 200));
   table.Insert(TestArgsTable::Row(2, 200));
   table.Insert(TestArgsTable::Row(3, 300));
   table.Insert(TestArgsTable::Row(4, 200));
   table.Insert(TestArgsTable::Row(4, 500));
   table.Insert(TestArgsTable::Row(4, 900));
   table.Insert(TestArgsTable::Row(4, 200));
   table.Insert(TestArgsTable::Row(8, 400));

   ASSERT_EQ(table.row_count(), 9u);
   ASSERT_TRUE(table.arg_set_id().IsSetId());

   // Verify that not-present ids are not returned.
   {
     static constexpr uint32_t kFilterArgSetId = 1;
     Query q;
     q.constraints = {table.arg_set_id().eq(kFilterArgSetId)};
     auto res = table.FilterToIterator(q);
     ASSERT_TRUE(!res);
   }
   {
     static constexpr uint32_t kFilterArgSetId = 9;
     Query q;
     q.constraints = {table.arg_set_id().eq(kFilterArgSetId)};
     auto it = table.FilterToIterator(q);
     ASSERT_TRUE(!it);
   }

   // Verify that filtering equality for real arg set ids works as expected.
   {
     static constexpr uint32_t kFilterArgSetId = 4;
     Query q;
     q.constraints = {table.arg_set_id().eq(kFilterArgSetId)};
     uint32_t cnt = 0;
     for (auto it = table.FilterToIterator(q); it; ++it, ++cnt) {
       ASSERT_EQ(it.arg_set_id(), kFilterArgSetId);
     }
     ASSERT_EQ(cnt, 4u);
   }
   {
     static constexpr uint32_t kFilterArgSetId = 0;
     Query q;
     q.constraints = {table.arg_set_id().eq(kFilterArgSetId)};
     uint32_t cnt = 0;
     for (auto it = table.FilterToIterator(q); it; ++it, ++cnt) {
       ASSERT_EQ(it.arg_set_id(), kFilterArgSetId);
     }
     ASSERT_EQ(cnt, 2u);
   }
   {
     static constexpr uint32_t kFilterArgSetId = 8;
     Query q;
     q.constraints = {table.arg_set_id().eq(kFilterArgSetId)};
     uint32_t cnt = 0;
     for (auto it = table.FilterToIterator(q); it; ++it, ++cnt) {
       ASSERT_EQ(it.arg_set_id(), kFilterArgSetId);
     }
     ASSERT_EQ(cnt, 1u);
   }

   // Verify that filtering equality for arg set ids after filtering another
   // column works.
   {
     static constexpr uint32_t kFilterArgSetId = 4;
     Query q;
     q.constraints = {table.int_value().eq(200),
                      table.arg_set_id().eq(kFilterArgSetId)};
     uint32_t cnt = 0;
     for (auto it = table.FilterToIterator(q); it; ++it, ++cnt) {
       ASSERT_EQ(it.arg_set_id(), kFilterArgSetId);
     }
     ASSERT_EQ(cnt, 2u);
   }
 }

 }  // namespace
 }  // namespace perfetto::trace_processor::tables
	/*
	* Copyright (C) 2019 The Android Open Source Project
	*
	* 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 <cstdint>
	#include <utility>
	#include <vector>

	#include "src/trace_processor/containers/string_pool.h"
	#include "src/trace_processor/db/column.h"
	#include "src/trace_processor/db/column/types.h"
	#include "src/trace_processor/db/column_storage.h"
	#include "src/trace_processor/tables/py_tables_unittest_py.h"

	#include "test/gtest_and_gmock.h"

	namespace perfetto::trace_processor::tables {

	TestEventTable::~TestEventTable() = default;
	TestEventChildTable::~TestEventChildTable() = default;
	TestSliceTable::~TestSliceTable() = default;
	TestArgsTable::~TestArgsTable() = default;

	namespace {

	class PyTablesUnittest : public ::testing::Test {
	protected:
	StringPool pool_;

	TestEventTable event_{&pool_};
	TestEventChildTable event_child_{&pool_, &event_};
	TestSliceTable slice_{&pool_, &event_};
	TestArgsTable args_{&pool_};
	};

	TEST_F(PyTablesUnittest, EventTableProprties) {
	ASSERT_STREQ(TestEventTable::Name(), "event");

	ASSERT_EQ(TestEventTable::ColumnIndex::id, 0u);
	ASSERT_EQ(TestEventTable::ColumnIndex::type, 1u);
	ASSERT_EQ(TestEventTable::ColumnIndex::ts, 2u);
	ASSERT_EQ(TestEventTable::ColumnIndex::arg_set_id, 3u);

	ASSERT_EQ(TestEventTable::ColumnFlag::ts,
	ColumnLegacy::Flag::kSorted \| ColumnLegacy::Flag::kNonNull);
	ASSERT_EQ(TestEventTable::ColumnFlag::arg_set_id,
	ColumnLegacy::Flag::kNonNull);
	}

	TEST_F(PyTablesUnittest, ArgsTableProprties) {
	ASSERT_STREQ(TestArgsTable::Name(), "args");

	ASSERT_EQ(TestArgsTable::ColumnIndex::id, 0u);
	ASSERT_EQ(TestArgsTable::ColumnIndex::type, 1u);
	ASSERT_EQ(TestArgsTable::ColumnIndex::arg_set_id, 2u);

	ASSERT_EQ(TestArgsTable::ColumnFlag::arg_set_id,
	ColumnLegacy::Flag::kSorted \| ColumnLegacy::Flag::kSetId \|
	ColumnLegacy::Flag::kNonNull);
	}

	TEST_F(PyTablesUnittest, InsertEvent) {
	event_.Insert(TestEventTable::Row(100, 0));

	ASSERT_EQ(pool_.Get(event_[0].type()).ToStdString(), "event");
	ASSERT_EQ(event_[0].ts(), 100);
	ASSERT_EQ(event_[0].arg_set_id(), 0u);
	}

	TEST_F(PyTablesUnittest, InsertEventSpecifyCols) {
	TestEventTable::Row row;
	row.ts = 100;
	row.arg_set_id = 0;
	event_.Insert(row);

	ASSERT_EQ(pool_.Get(event_[0].type()).ToStdString(), "event");
	ASSERT_EQ(event_[0].ts(), 100);
	ASSERT_EQ(event_[0].arg_set_id(), 0u);
	}

	TEST_F(PyTablesUnittest, MutableColumn) {
	event_.Insert(TestEventTable::Row(100, 0));

	ASSERT_EQ(event_[0].ts(), 100);
	ASSERT_EQ(event_[0].arg_set_id(), 0u);
	}

	TEST_F(PyTablesUnittest, ShrinkToFit) {
	event_.Insert(TestEventTable::Row(100, 0));
	event_.ShrinkToFit();

	// Unfortunately given the loose restrictions on shrink_to_fit provided by the
	// standard library, we cannot really assert anything. Just call the method to
	// ensure it doesn't cause crashes.
	}

	TEST_F(PyTablesUnittest, FindById) {
	auto id_and_row = event_.Insert(TestEventTable::Row(100, 0));

	auto row_ref = event_.FindById(id_and_row.id);
	ASSERT_EQ(row_ref->ToRowNumber().row_number(), id_and_row.row);
	ASSERT_EQ(row_ref->id(), id_and_row.id);
	ASSERT_EQ(row_ref->ts(), 100);
	ASSERT_EQ(row_ref->arg_set_id(), 0u);
	}

	TEST_F(PyTablesUnittest, ChildFindById) {
	event_.Insert(TestEventTable::Row(50, 0));
	auto id_and_row = slice_.Insert(TestSliceTable::Row(100, 0, 10));

	auto row_ref = slice_.FindById(id_and_row.id);
	ASSERT_EQ(row_ref->ToRowNumber().row_number(), id_and_row.row);
	ASSERT_EQ(row_ref->id(), id_and_row.id);
	ASSERT_EQ(row_ref->ts(), 100);
	ASSERT_EQ(row_ref->arg_set_id(), 0u);
	ASSERT_EQ(row_ref->dur(), 10u);
	}
	TEST_F(PyTablesUnittest, ChildTableStatics) {
	ASSERT_EQ(TestSliceTable::ColumnFlag::dur, ColumnLegacy::Flag::kNonNull);
	ASSERT_EQ(TestSliceTable::ColumnIndex::id, 0u);
	ASSERT_EQ(TestSliceTable::ColumnIndex::type, 1u);
	ASSERT_EQ(TestSliceTable::ColumnIndex::ts, 2u);
	ASSERT_EQ(TestSliceTable::ColumnIndex::arg_set_id, 3u);
	ASSERT_EQ(TestSliceTable::ColumnIndex::dur, 4u);
	}

	TEST_F(PyTablesUnittest, ParentAndChildInsert) {
	event_.Insert(TestEventTable::Row(50, 0));
	slice_.Insert(TestSliceTable::Row(100, 1, 10));
	event_.Insert(TestEventTable::Row(150, 2));
	slice_.Insert(TestSliceTable::Row(200, 3, 20));

	ASSERT_EQ(event_.row_count(), 4u);
	ASSERT_EQ(event_[0].id(), TestEventTable::Id{0});
	ASSERT_EQ(pool_.Get(event_[0].type()), "event");
	ASSERT_EQ(event_[0].ts(), 50);

	ASSERT_EQ(event_[1].id(), TestEventTable::Id{1});
	ASSERT_EQ(pool_.Get(event_[1].type()), "slice");
	ASSERT_EQ(event_[1].ts(), 100);

	ASSERT_EQ(event_[2].id(), TestEventTable::Id{2});
	ASSERT_EQ(pool_.Get(event_[2].type()), "event");
	ASSERT_EQ(event_[2].ts(), 150);

	ASSERT_EQ(event_[3].id(), TestEventTable::Id{3});
	ASSERT_EQ(pool_.Get(event_[3].type()), "slice");
	ASSERT_EQ(event_[3].ts(), 200);

	ASSERT_EQ(slice_.row_count(), 2u);
	ASSERT_EQ(slice_[0].id(), TestEventTable::Id{1});
	ASSERT_EQ(pool_.Get(slice_[0].type()), "slice");
	ASSERT_EQ(slice_[0].ts(), 100);
	ASSERT_EQ(slice_[0].dur(), 10);

	ASSERT_EQ(slice_[1].id(), TestEventTable::Id{3});
	ASSERT_EQ(pool_.Get(slice_[1].type()), "slice");
	ASSERT_EQ(slice_[1].ts(), 200);
	ASSERT_EQ(slice_[1].dur(), 20);
	}

	TEST_F(PyTablesUnittest, Extend) {
	event_.Insert(TestEventTable::Row(50, 0));
	event_.Insert(TestEventTable::Row(100, 1));
	event_.Insert(TestEventTable::Row(150, 2));

	ColumnStorage<int64_t> dur;
	dur.Append(512);
	dur.Append(1024);
	dur.Append(2048);

	auto slice_ext = TestSliceTable::ExtendParent(event_, std::move(dur));
	ASSERT_EQ(slice_ext->row_count(), 3u);
	ASSERT_EQ((*slice_ext)[0].ts(), 50);
	ASSERT_EQ((*slice_ext)[0].dur(), 512);
	ASSERT_EQ((*slice_ext)[1].ts(), 100);
	ASSERT_EQ((*slice_ext)[1].dur(), 1024);
	ASSERT_EQ((*slice_ext)[2].ts(), 150);
	ASSERT_EQ((*slice_ext)[2].dur(), 2048);
	}

	TEST_F(PyTablesUnittest, SelectAndExtend) {
	event_.Insert(TestEventTable::Row(50, 0));
	event_.Insert(TestEventTable::Row(100, 1));
	event_.Insert(TestEventTable::Row(150, 2));

	std::vector<TestEventTable::RowNumber> rows;
	rows.emplace_back(1);
	ColumnStorage<int64_t> dur;
	dur.Append(1024);

	auto slice_ext = TestSliceTable::SelectAndExtendParent(
	event_, std::move(rows), std::move(dur));
	ASSERT_EQ(slice_ext->row_count(), 1u);
	ASSERT_EQ((*slice_ext)[0].ts(), 100);
	ASSERT_EQ((*slice_ext)[0].dur(), 1024);
	}

	TEST_F(PyTablesUnittest, SetIdColumns) {
	StringPool pool;
	TestArgsTable table{&pool};

	table.Insert(TestArgsTable::Row(0, 100));
	table.Insert(TestArgsTable::Row(0, 200));
	table.Insert(TestArgsTable::Row(2, 200));
	table.Insert(TestArgsTable::Row(3, 300));
	table.Insert(TestArgsTable::Row(4, 200));
	table.Insert(TestArgsTable::Row(4, 500));
	table.Insert(TestArgsTable::Row(4, 900));
	table.Insert(TestArgsTable::Row(4, 200));
	table.Insert(TestArgsTable::Row(8, 400));

	ASSERT_EQ(table.row_count(), 9u);
	ASSERT_TRUE(table.arg_set_id().IsSetId());

	// Verify that not-present ids are not returned.
	{
	static constexpr uint32_t kFilterArgSetId = 1;
	Query q;
	q.constraints = {table.arg_set_id().eq(kFilterArgSetId)};
	auto res = table.FilterToIterator(q);
	ASSERT_TRUE(!res);
	}
	{
	static constexpr uint32_t kFilterArgSetId = 9;
	Query q;
	q.constraints = {table.arg_set_id().eq(kFilterArgSetId)};
	auto it = table.FilterToIterator(q);
	ASSERT_TRUE(!it);
	}

	// Verify that filtering equality for real arg set ids works as expected.
	{
	static constexpr uint32_t kFilterArgSetId = 4;
	Query q;
	q.constraints = {table.arg_set_id().eq(kFilterArgSetId)};
	uint32_t cnt = 0;
	for (auto it = table.FilterToIterator(q); it; ++it, ++cnt) {
	ASSERT_EQ(it.arg_set_id(), kFilterArgSetId);
	}
	ASSERT_EQ(cnt, 4u);
	}
	{
	static constexpr uint32_t kFilterArgSetId = 0;
	Query q;
	q.constraints = {table.arg_set_id().eq(kFilterArgSetId)};
	uint32_t cnt = 0;
	for (auto it = table.FilterToIterator(q); it; ++it, ++cnt) {
	ASSERT_EQ(it.arg_set_id(), kFilterArgSetId);
	}
	ASSERT_EQ(cnt, 2u);
	}
	{
	static constexpr uint32_t kFilterArgSetId = 8;
	Query q;
	q.constraints = {table.arg_set_id().eq(kFilterArgSetId)};
	uint32_t cnt = 0;
	for (auto it = table.FilterToIterator(q); it; ++it, ++cnt) {
	ASSERT_EQ(it.arg_set_id(), kFilterArgSetId);
	}
	ASSERT_EQ(cnt, 1u);
	}

	// Verify that filtering equality for arg set ids after filtering another
	// column works.
	{
	static constexpr uint32_t kFilterArgSetId = 4;
	Query q;
	q.constraints = {table.int_value().eq(200),
	table.arg_set_id().eq(kFilterArgSetId)};
	uint32_t cnt = 0;
	for (auto it = table.FilterToIterator(q); it; ++it, ++cnt) {
	ASSERT_EQ(it.arg_set_id(), kFilterArgSetId);
	}
	ASSERT_EQ(cnt, 2u);
	}
	}

	} // namespace
	} // namespace perfetto::trace_processor::tables