125 lines
4.5 KiB
C++
125 lines
4.5 KiB
C++
// Licensed to the Apache Software Foundation (ASF) under one
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// or more contributor license agreements. See the NOTICE file
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// distributed with this work for additional information
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// regarding copyright ownership. The ASF licenses this file
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// to you under the Apache License, Version 2.0 (the
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// "License"); you may not use this file except in compliance
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// with the License. You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing,
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// software distributed under the License is distributed on an
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// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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// KIND, either express or implied. See the License for the
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// specific language governing permissions and limitations
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// under the License.
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#include "exprs/aggregate_functions.h"
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#include "testutil/function_utils.h"
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#include <gtest/gtest.h>
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namespace doris {
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class PercentileApproxTest : public testing::Test {
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public:
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PercentileApproxTest() {}
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};
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TEST_F(PercentileApproxTest, testSample) {
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FunctionUtils* futil = new FunctionUtils();
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doris_udf::FunctionContext *context = futil->get_fn_ctx();
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DoubleVal doubleQ(0.9);
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StringVal stringVal1;
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DoubleVal int1(1);
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AggregateFunctions::percentile_approx_init(context, &stringVal1);
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AggregateFunctions::percentile_approx_update(context, int1, doubleQ, &stringVal1);
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DoubleVal int2(2);
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AggregateFunctions::percentile_approx_update(context, int2, doubleQ, &stringVal1);
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StringVal s = AggregateFunctions::percentile_approx_serialize(context, stringVal1);
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StringVal stringVal2;
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AggregateFunctions::percentile_approx_init(context, &stringVal2);
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AggregateFunctions::percentile_approx_merge(context, s, &stringVal2);
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DoubleVal v = AggregateFunctions::percentile_approx_finalize(context, stringVal2);
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ASSERT_EQ(v.val, 2);
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delete futil;
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}
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TEST_F(PercentileApproxTest, testNoMerge) {
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FunctionUtils* futil = new FunctionUtils();
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doris_udf::FunctionContext *context = futil->get_fn_ctx();
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DoubleVal doubleQ(0.9);
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StringVal stringVal1;
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DoubleVal val(1);
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AggregateFunctions::percentile_approx_init(context, &stringVal1);
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AggregateFunctions::percentile_approx_update(context, val, doubleQ, &stringVal1);
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DoubleVal val2(2);
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AggregateFunctions::percentile_approx_update(context, val2, doubleQ, &stringVal1);
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DoubleVal v = AggregateFunctions::percentile_approx_finalize(context, stringVal1);
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ASSERT_EQ(v.val, 2);
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delete futil;
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}
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TEST_F(PercentileApproxTest, testSerialize) {
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FunctionUtils* futil = new FunctionUtils();
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doris_udf::FunctionContext *context = futil->get_fn_ctx();
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DoubleVal doubleQ(0.999);
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StringVal stringVal;
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AggregateFunctions::percentile_approx_init(context, &stringVal);
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for (int i = 1 ;i <= 100000 ; i++) {
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DoubleVal val(i);
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AggregateFunctions::percentile_approx_update(context, val, doubleQ, &stringVal);
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}
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StringVal serialized = AggregateFunctions::percentile_approx_serialize(context, stringVal);
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// mock serialize
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StringVal stringVal2;
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AggregateFunctions::percentile_approx_init(context, &stringVal2);
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AggregateFunctions::percentile_approx_merge(context, serialized, &stringVal2);
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DoubleVal v = AggregateFunctions::percentile_approx_finalize(context, stringVal2);
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ASSERT_DOUBLE_EQ(v.val, 99900.5);
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delete futil;
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}
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TEST_F(PercentileApproxTest, testNullVale) {
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FunctionUtils* futil = new FunctionUtils();
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doris_udf::FunctionContext *context = futil->get_fn_ctx();
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DoubleVal doubleQ(0.999);
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StringVal stringVal;
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AggregateFunctions::percentile_approx_init(context, &stringVal);
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for (int i = 1 ;i <= 100000 ; i++) {
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if (i % 3 == 0) {
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AggregateFunctions::percentile_approx_update(context, DoubleVal::null(), doubleQ, &stringVal);
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} else {
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AggregateFunctions::percentile_approx_update(context, DoubleVal(i), doubleQ, &stringVal);
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}
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}
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StringVal serialized = AggregateFunctions::percentile_approx_serialize(context, stringVal);
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// mock serialize
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StringVal stringVal2;
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AggregateFunctions::percentile_approx_init(context, &stringVal2);
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AggregateFunctions::percentile_approx_merge(context, serialized, &stringVal2);
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DoubleVal v = AggregateFunctions::percentile_approx_finalize(context, stringVal2);
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ASSERT_FLOAT_EQ(v.val, 99900.665999999997);
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delete futil;
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}
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}
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int main(int argc, char** argv) {
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::testing::InitGoogleTest(&argc, argv);
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return RUN_ALL_TESTS();
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}
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