src/backend/executor/test/nodeShareInputScan_test.c

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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 <stdarg.h>
#include <stddef.h>
#include <setjmp.h>
#include "cmockery.h"

#include "c.h"
#include "postgres.h"
#include "nodes/nodes.h"
#include "../nodeShareInputScan.c"

#define FIXED_POINTER_VAL ((LargestIntegralType) 0x0000beef)
#define SHARE_NODE_ENTRY_REFCOUNT 78

/*
 * Tests ExecEagerFreeShareInputScan when plan->share_type = SHARE_NOTSHARED
 * Verifies that all the pointers are set to NULL
 */
void
test__ExecEagerFreeShareInputScan_SHARE_NOTSHARED(void **state)
{
	ShareInputScanState *sisc = makeNode(ShareInputScanState);
	ShareInputScan *plan = makeNode(ShareInputScan);
	sisc->ss.ps.plan = plan;

	sisc->ts_markpos = FIXED_POINTER_VAL;
	sisc->ts_pos = FIXED_POINTER_VAL;
	sisc->ts_state = FIXED_POINTER_VAL;
	sisc->freed = false;

	plan->share_type = SHARE_NOTSHARED;

	ExecEagerFreeShareInputScan(sisc);

	assert_int_equal(sisc->ts_markpos, NULL);
	assert_int_equal(sisc->ts_pos, NULL);
	assert_int_equal(sisc->ts_state, NULL);
	assert_true(sisc->freed);

	return;
}

/* ==================== ExecEagerFreeShareInputScan ==================== */
/*
 * Tests ExecEagerFreeShareInputScan when plan->share_type = SHARE_MATERIAL
 * Verifies that the tuplestore accessor and the tuplestore state are destroyed,
 * and that all the pointers are set to NULL
 */
void
test__ExecEagerFreeShareInputScan_SHARE_MATERIAL(void **state)
{
	ShareInputScanState *sisc = makeNode(ShareInputScanState);
	ShareInputScan *plan = makeNode(ShareInputScan);
	sisc->ss.ps.plan = plan;

	sisc->ts_markpos = NULL;
	sisc->ts_pos = FIXED_POINTER_VAL;
	sisc->ts_state = (GenericTupStore *) palloc0(sizeof(GenericTupStore));
	sisc->ts_state->matstore = FIXED_POINTER_VAL;
	sisc->freed = false;

	plan->share_type = SHARE_MATERIAL;

	expect_value(ntuplestore_destroy_accessor, acc, FIXED_POINTER_VAL);
	will_be_called(ntuplestore_destroy_accessor);

	expect_value(ntuplestore_is_readerwriter_reader, nts, FIXED_POINTER_VAL);
	will_return(ntuplestore_is_readerwriter_reader, true);

	expect_value(ntuplestore_destroy, ts, FIXED_POINTER_VAL);
	will_be_called(ntuplestore_destroy);


	ShareNodeEntry *shareNodeEntry = makeNode(ShareNodeEntry);
	shareNodeEntry->refcount = SHARE_NODE_ENTRY_REFCOUNT;

	expect_any(ExecGetShareNodeEntry, estate);
	expect_any(ExecGetShareNodeEntry, shareidx);
	expect_value(ExecGetShareNodeEntry, fCreate, false);
	will_return(ExecGetShareNodeEntry, shareNodeEntry);

	ExecEagerFreeShareInputScan(sisc);

	assert_int_equal(sisc->ts_markpos, NULL);
	assert_int_equal(sisc->ts_pos, NULL);
	assert_int_equal(sisc->ts_state, NULL);
	assert_int_equal(shareNodeEntry->refcount, SHARE_NODE_ENTRY_REFCOUNT - 1);
	assert_true(sisc->freed);

	return;
}

int
main(int argc, char* argv[])
{
        cmockery_parse_arguments(argc, argv);

        const UnitTest tests[] = {
                        unit_test(test__ExecEagerFreeShareInputScan_SHARE_NOTSHARED),
                        unit_test(test__ExecEagerFreeShareInputScan_SHARE_MATERIAL)
        };
        return run_tests(tests);
}