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[fix](core) Fix format round would core under boundary conditions. #53660
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,87 @@ | ||
| // 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. | ||
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| #include "exprs/math_functions.h" | ||
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| #include <gtest/gtest.h> | ||
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| #include <cmath> | ||
| #include <limits> | ||
| namespace doris { | ||
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| struct MathFunctionsTest : public ::testing::Test {}; | ||
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| // Regular rounding test (truncate = false) | ||
| TEST_F(MathFunctionsTest, DoubleRoundBasic) { | ||
| // Positive number rounding | ||
| EXPECT_DOUBLE_EQ(123.46, MathFunctions::my_double_round(123.456, 2, false, false)); | ||
| EXPECT_DOUBLE_EQ(123.45, MathFunctions::my_double_round(123.454, 2, false, false)); | ||
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| // Negative number rounding | ||
| EXPECT_DOUBLE_EQ(-123.46, MathFunctions::my_double_round(-123.456, 2, false, false)); | ||
| EXPECT_DOUBLE_EQ(-123.45, MathFunctions::my_double_round(-123.454, 2, false, false)); | ||
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| // Integer place rounding | ||
| EXPECT_DOUBLE_EQ(100.0, | ||
| MathFunctions::my_double_round(123.456, -2, false, false)); // Hundreds place | ||
| EXPECT_DOUBLE_EQ(120.0, | ||
| MathFunctions::my_double_round(123.456, -1, false, false)); // Tens place | ||
| EXPECT_DOUBLE_EQ(-100.0, MathFunctions::my_double_round( | ||
| -123.456, -2, false, false)); // Negative number hundreds place | ||
| } | ||
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| // Truncation mode test (truncate = true) | ||
| TEST_F(MathFunctionsTest, DoubleRoundTruncate) { | ||
| // Positive number truncation | ||
| EXPECT_DOUBLE_EQ(123.45, MathFunctions::my_double_round(123.456, 2, false, true)); | ||
| EXPECT_DOUBLE_EQ(123.0, MathFunctions::my_double_round(123.789, 0, false, true)); | ||
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| // Negative number truncation (towards zero) | ||
| EXPECT_DOUBLE_EQ(-123.45, MathFunctions::my_double_round(-123.456, 2, false, true)); | ||
| EXPECT_DOUBLE_EQ(-100.0, MathFunctions::my_double_round(-123.456, -2, false, true)); | ||
| } | ||
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| // Special value handling (Infinity, NaN) | ||
| TEST_F(MathFunctionsTest, DoubleRoundSpecialValues) { | ||
| const double inf = std::numeric_limits<double>::infinity(); | ||
| const double nan = std::numeric_limits<double>::quiet_NaN(); | ||
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| // Infinity remains unchanged | ||
| EXPECT_DOUBLE_EQ(inf, MathFunctions::my_double_round(inf, 2, false, false)); | ||
| EXPECT_DOUBLE_EQ(-inf, MathFunctions::my_double_round(-inf, -3, true, true)); | ||
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| // NaN returns NaN | ||
| EXPECT_TRUE(std::isnan(MathFunctions::my_double_round(nan, 2, false, false))); | ||
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| // Large precision causing overflow | ||
| EXPECT_DOUBLE_EQ(0.0, MathFunctions::my_double_round(123.456, -1000, false, false)); | ||
| EXPECT_DOUBLE_EQ(123.456, MathFunctions::my_double_round(123.456, -1000, true, | ||
| false)); // dec_unsigned handling | ||
| } | ||
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| // Zero and boundary precision test | ||
| TEST_F(MathFunctionsTest, DoubleRoundEdgeCases) { | ||
| // Zero value handling | ||
| EXPECT_DOUBLE_EQ(0.0, MathFunctions::my_double_round(0.0, 3, false, false)); | ||
| EXPECT_DOUBLE_EQ(0.0, MathFunctions::my_double_round(-0.0, 2, true, true)); | ||
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| // Zero precision | ||
| EXPECT_DOUBLE_EQ(123.0, MathFunctions::my_double_round(123.456, 0, false, false)); | ||
| EXPECT_DOUBLE_EQ(124.0, MathFunctions::my_double_round(123.789, 0, false, false)); // Rounding | ||
| } | ||
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| }; // namespace doris |
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Will formatted_num be empty?
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这个formatted_num是fmt::format("{:.{}f}", value, decimal_places)的结果。
这个已经判断是一个正规的数了，变成字符串一定不为空，我加一个DCHECK吧。