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Diffstat (limited to 'src/mongo/db/pipeline/monotonic_expression_test.cpp')
| -rw-r--r-- | src/mongo/db/pipeline/monotonic_expression_test.cpp | 149 |
1 files changed, 0 insertions, 149 deletions
diff --git a/src/mongo/db/pipeline/monotonic_expression_test.cpp b/src/mongo/db/pipeline/monotonic_expression_test.cpp deleted file mode 100644 index 0c667108201..00000000000 --- a/src/mongo/db/pipeline/monotonic_expression_test.cpp +++ /dev/null @@ -1,149 +0,0 @@ -/** - * Copyright (C) 2022-present MongoDB, Inc. - * - * This program is free software: you can redistribute it and/or modify - * it under the terms of the Server Side Public License, version 1, - * as published by MongoDB, Inc. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * Server Side Public License for more details. - * - * You should have received a copy of the Server Side Public License - * along with this program. If not, see - * <http://www.mongodb.com/licensing/server-side-public-license>. - * - * As a special exception, the copyright holders give permission to link the - * code of portions of this program with the OpenSSL library under certain - * conditions as described in each individual source file and distribute - * linked combinations including the program with the OpenSSL library. You - * must comply with the Server Side Public License in all respects for - * all of the code used other than as permitted herein. If you modify file(s) - * with this exception, you may extend this exception to your version of the - * file(s), but you are not obligated to do so. If you do not wish to do so, - * delete this exception statement from your version. If you delete this - * exception statement from all source files in the program, then also delete - * it in the license file. - */ - -#include "mongo/db/pipeline/expression_context_for_test.h" -#include "mongo/db/pipeline/monotonic_expression.h" -#include "mongo/db/service_context_d_test_fixture.h" - -namespace mongo { -namespace { - -class MonotonicExpressionFixture : public ServiceContextMongoDTest { -public: - bool isMonotonicExpression(BSONObj expressionSpec, const FieldPath& monotonicField) { - auto expression = - Expression::parseExpression(&_expCtx, expressionSpec, _expCtx.variablesParseState); - return expression->isMonotonic(monotonicField); - } - -private: - ExpressionContextForTest _expCtx; -}; - -} // namespace - -TEST_F(MonotonicExpressionFixture, ConstIsMonotonic) { - ASSERT_TRUE(isMonotonicExpression(BSON("$const" << 1), "a")); -} - -TEST_F(MonotonicExpressionFixture, MonotonicFieldIsMonotonic) { - ASSERT_TRUE(isMonotonicExpression(BSON("$add" << BSON_ARRAY("$a")), "a")); -} - -TEST_F(MonotonicExpressionFixture, NonMonotonicFieldIsNonMonotonic) { - ASSERT_FALSE(isMonotonicExpression(BSON("$add" << BSON_ARRAY("$b")), "a")); -} - -TEST_F(MonotonicExpressionFixture, MonotonicWithOppositeSignIsStillMonotonic) { - ASSERT_TRUE(isMonotonicExpression(BSON("$subtract" << BSON_ARRAY(1 << "$a")), "a")); -} - -TEST_F(MonotonicExpressionFixture, NestedOppositesAreProcessedCorrectlyForMonotonic) { - // Test expression is: dateDiff(1 - (1 - (1 - a))), a) - const auto& startDate = fromjson("{$subtract: [1, {$subtract: [1, {$subtract: [1, '$a']}]}]}"); - const auto& expression = BSON("$dateDiff" << BSON("startDate" << startDate << "endDate" - << "$a" - << "unit" - << "hours")); - ASSERT_TRUE(isMonotonicExpression(expression, "a")); -} - -TEST_F(MonotonicExpressionFixture, NestedOppositesAreProcessedCorrectlyForNonMonotonic) { - // LHS expression (1 - (1 - floor(a)) - 1 is increasing assuming $a is increasing. - const auto& lhs = - fromjson("{$subtract: [{$subtract: [1, {$subtract: [1, {$floor: '$a'}]}]}, 1]}"); - // RHS expression 1 - (1 - (1 - ceil(a))) is decreasing assuming $a is decreasing. - const auto& rhs = - fromjson("{$subtract: [1, {$subtract: [1, {$subtract: [1, {$ceil: '$a'}]}]}]}"); - // Both LHS and RHS are monotonic - ASSERT_TRUE(isMonotonicExpression(lhs, "a")); - ASSERT_TRUE(isMonotonicExpression(rhs, "a")); - // Because they are monotonic in different directions, their sum is non monotonic, but their - // difference is monotonic. - ASSERT_FALSE(isMonotonicExpression(BSON("$add" << BSON_ARRAY(lhs << rhs)), "a")); - ASSERT_TRUE(isMonotonicExpression(BSON("$subtract" << BSON_ARRAY(lhs << rhs)), "a")); -} - -TEST_F(MonotonicExpressionFixture, MonotonicAndNonMonotonicFieldIsNonMonotonic) { - ASSERT_FALSE(isMonotonicExpression(BSON("$add" << BSON_ARRAY("$a" - << "$b")), - "a")); -} - -TEST_F(MonotonicExpressionFixture, MonotonicAndConstantIsMonotonic) { - ASSERT_TRUE(isMonotonicExpression(BSON("$add" << BSON_ARRAY("$a" - << "1")), - "a")); -} - -TEST_F(MonotonicExpressionFixture, ConstantAndConstantIsMonotonic) { - ASSERT_TRUE(isMonotonicExpression(BSON("$add" << BSON_ARRAY("1" - << "2")), - "a")); -} - -TEST_F(MonotonicExpressionFixture, MonotonicAndOppositeMonotonicIsNonMonotonic) { - ASSERT_FALSE(isMonotonicExpression(BSON("$subtract" << BSON_ARRAY("$a" - << "$a")), - "a")); -} - -TEST_F(MonotonicExpressionFixture, MonotonicAndMonotonicIsMonotonic) { - const auto& dateTrunc = BSON("$dateTrunc" << BSON("date" - << "$time" - << "unit" - << "hour" - << "timezone" - << "America/New_York")); - ASSERT_TRUE(isMonotonicExpression(BSON("$add" << BSON_ARRAY(dateTrunc << "$time")), "time")); - ASSERT_TRUE(isMonotonicExpression(BSON("$add" << BSON_ARRAY("$time" - << "$time")), - "time")); -} -TEST_F(MonotonicExpressionFixture, FunctionWithConstantNonMonotonicChildrenIsMonotonic) { - ASSERT_TRUE(isMonotonicExpression(BSON("$dateTrunc" << BSON("date" - << "$time" - << "unit" - << "hour" - << "timezone" - << "America/New_York")), - "time")); -} - -TEST_F(MonotonicExpressionFixture, FunctionWithNonConstantNonMonotonicChildrenIsNonMonotonic) { - ASSERT_FALSE(isMonotonicExpression(BSON("$dateTrunc" << BSON("date" - << "$time" - << "unit" - << "hour" - << "binSize" - << "$time")), - "time")); -} - -} // namespace mongo |