milvus/internal/util/funcutil/parallel_test.go

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// Copyright (C) 2019-2020 Zilliz. All rights reserved.
//
// Licensed 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.
package funcutil
import (
"errors"
"math/rand"
"runtime"
"strconv"
"testing"
"github.com/stretchr/testify/assert"
)
func TestProcessFuncParallel(t *testing.T) {
total := 64
s := make([]int, total)
expectedS := make([]int, total)
for i := range expectedS {
expectedS[i] = i
}
naiveF := func(idx int) error {
s[idx] = idx
return nil
}
var err error
err = ProcessFuncParallel(total, 1, naiveF, "naiveF") // serial
assert.Equal(t, err, nil, "process function serially must be right")
assert.Equal(t, s, expectedS, "process function serially must be right")
err = ProcessFuncParallel(total, total, naiveF, "naiveF") // Totally Parallel
assert.Equal(t, err, nil, "process function parallel must be right")
assert.Equal(t, s, expectedS, "process function parallel must be right")
err = ProcessFuncParallel(total, runtime.NumCPU(), naiveF, "naiveF") // Parallel by CPU
assert.Equal(t, err, nil, "process function parallel must be right")
assert.Equal(t, s, expectedS, "process function parallel must be right")
oddErrorF := func(idx int) error {
if idx%2 == 1 {
return errors.New("odd location: " + strconv.Itoa(idx))
}
return nil
}
err = ProcessFuncParallel(total, 1, oddErrorF, "oddErrorF") // serial
assert.NotEqual(t, err, nil, "process function serially must be right")
err = ProcessFuncParallel(total, total, oddErrorF, "oddErrorF") // Totally Parallel
assert.NotEqual(t, err, nil, "process function parallel must be right")
err = ProcessFuncParallel(total, runtime.NumCPU(), oddErrorF, "oddErrorF") // Parallel by CPU
assert.NotEqual(t, err, nil, "process function parallel must be right")
evenErrorF := func(idx int) error {
if idx%2 == 0 {
return errors.New("even location: " + strconv.Itoa(idx))
}
return nil
}
err = ProcessFuncParallel(total, 1, evenErrorF, "evenErrorF") // serial
assert.NotEqual(t, err, nil, "process function serially must be right")
err = ProcessFuncParallel(total, total, evenErrorF, "evenErrorF") // Totally Parallel
assert.NotEqual(t, err, nil, "process function parallel must be right")
err = ProcessFuncParallel(total, runtime.NumCPU(), evenErrorF, "evenErrorF") // Parallel by CPU
assert.NotEqual(t, err, nil, "process function parallel must be right")
// rand.Int() may be always a even number
randomErrorF := func(idx int) error {
if rand.Int()%2 == 0 {
return errors.New("random location: " + strconv.Itoa(idx))
}
return nil
}
ProcessFuncParallel(total, 1, randomErrorF, "randomErrorF") // serial
ProcessFuncParallel(total, total, randomErrorF, "randomErrorF") // Totally Parallel
ProcessFuncParallel(total, runtime.NumCPU(), randomErrorF, "randomErrorF") // Parallel by CPU
}