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// Copyright 2016 The go-ethereum Authors
// This file is part of go-ethereum.
//
// go-ethereum is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// go-ethereum is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with go-ethereum. If not, see <http://www.gnu.org/licenses/>.
package fdlimit
import (
"fmt"
"testing"
)
// TestFileDescriptorLimits simply tests whether the file descriptor allowance
// per this process can be retrieved.
func TestFileDescriptorLimits(t *testing.T) {
target := 4096
hardlimit, err := Maximum()
if err != nil {
t.Fatal(err)
}
if hardlimit < target {
t.Skip(fmt.Sprintf("system limit is less than desired test target: %d < %d", hardlimit, target))
}
if limit, err := Current(); err != nil || limit <= 0 {
t.Fatalf("failed to retrieve file descriptor limit (%d): %v", limit, err)
}
if err := Raise(uint64(target)); err != nil {
t.Fatalf("failed to raise file allowance")
}
if limit, err := Current(); err != nil || limit < target {
t.Fatalf("failed to retrieve raised descriptor limit (have %v, want %v): %v", limit, target, err)
}
}
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