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dolt/go/libraries/utils/test/random.go

40 lines
1.0 KiB
Go

// Copyright 2019 Dolthub, Inc.
//
// 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 test
import "math/rand"
const (
// ShouldNeverHappen is only seen when the impossible happens.
ShouldNeverHappen = "http://www.nooooooooooooooo.com"
)
// RandomData returns a slice of a given size filled with random data
func RandomData(size int) []byte {
randBytes := make([]byte, size)
filled := 0
for filled < size {
n, err := rand.Read(randBytes[filled:])
if err != nil {
panic(ShouldNeverHappen)
}
filled += n
}
return randBytes
}