116 lines
3.3 KiB
C++
116 lines
3.3 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/hll_function.h"
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#include <gtest/gtest.h>
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#include <iostream>
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#include <string>
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#include "exprs/aggregate_functions.h"
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#include "exprs/anyval_util.h"
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#include "olap/hll.h"
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#include "testutil/function_utils.h"
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#include "util/logging.h"
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namespace doris {
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StringVal convert_hll_to_string(FunctionContext* ctx, HyperLogLog& hll) {
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std::string buf;
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buf.resize(HLL_COLUMN_DEFAULT_LEN);
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int size = hll.serialize((uint8_t*)buf.c_str());
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buf.resize(size);
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return AnyValUtil::from_string_temp(ctx, buf);
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}
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class HllFunctionsTest : public testing::Test {
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public:
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HllFunctionsTest() = default;
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void SetUp() {
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utils = new FunctionUtils();
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ctx = utils->get_fn_ctx();
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}
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void TearDown() { delete utils; }
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private:
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FunctionUtils* utils;
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FunctionContext* ctx;
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};
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TEST_F(HllFunctionsTest, hll_hash) {
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StringVal input = AnyValUtil::from_string_temp(ctx, std::string("1024"));
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StringVal result = HllFunctions::hll_hash(ctx, input);
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HyperLogLog hll(Slice(result.ptr, result.len));
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int64_t cardinality = hll.estimate_cardinality();
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int64_t expected = 1;
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ASSERT_EQ(expected, cardinality);
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}
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TEST_F(HllFunctionsTest, hll_hash_null) {
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StringVal input = StringVal::null();
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StringVal result = HllFunctions::hll_hash(ctx, input);
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HyperLogLog hll(Slice(result.ptr, result.len));
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int64_t cardinality = hll.estimate_cardinality();
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int64_t expected = 0;
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ASSERT_EQ(expected, cardinality);
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}
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TEST_F(HllFunctionsTest, hll_update) {
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StringVal dst;
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HllFunctions::hll_init(ctx, &dst);
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IntVal src1(1);
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HllFunctions::hll_update(ctx, src1, &dst);
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IntVal src2(1234567);
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HllFunctions::hll_update(ctx, src2, &dst);
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BigIntVal result = HllFunctions::hll_finalize(ctx, dst);
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BigIntVal expected(2);
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ASSERT_EQ(expected, result);
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}
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TEST_F(HllFunctionsTest, hll_merge) {
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StringVal dst;
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HllFunctions::hll_init(ctx, &dst);
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HyperLogLog hll1(1024);
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StringVal src1 = convert_hll_to_string(ctx, hll1);
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HllFunctions::hll_merge(ctx, src1, &dst);
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HyperLogLog hll2;
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StringVal src2 = convert_hll_to_string(ctx, hll2);
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HllFunctions::hll_merge(ctx, src2, &dst);
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StringVal serialized = HllFunctions::hll_serialize(ctx, dst);
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HyperLogLog hll(Slice(serialized.ptr, serialized.len));
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BigIntVal expected(1);
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ASSERT_EQ(expected, hll.estimate_cardinality());
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}
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} // namespace doris
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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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