github.com/aigarnetwork/aigar@v0.0.0-20191115204914-d59a6eb70f8e/common/fdlimit/fdlimit_test.go (about)

     1  //  Copyright 2018 The go-ethereum Authors
     2  //  Copyright 2019 The go-aigar Authors
     3  //  This file is part of the go-aigar library.
     4  //
     5  //  The go-aigar library is free software: you can redistribute it and/or modify
     6  //  it under the terms of the GNU Lesser General Public License as published by
     7  //  the Free Software Foundation, either version 3 of the License, or
     8  //  (at your option) any later version.
     9  //
    10  //  The go-aigar library is distributed in the hope that it will be useful,
    11  //  but WITHOUT ANY WARRANTY; without even the implied warranty of
    12  //  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    13  //  GNU Lesser General Public License for more details.
    14  //
    15  //  You should have received a copy of the GNU Lesser General Public License
    16  //  along with the go-aigar library. If not, see <http://www.gnu.org/licenses/>.
    17  
    18  package fdlimit
    19  
    20  import (
    21  	"fmt"
    22  	"testing"
    23  )
    24  
    25  // TestFileDescriptorLimits simply tests whether the file descriptor allowance
    26  // per this process can be retrieved.
    27  func TestFileDescriptorLimits(t *testing.T) {
    28  	target := 4096
    29  	hardlimit, err := Maximum()
    30  	if err != nil {
    31  		t.Fatal(err)
    32  	}
    33  	if hardlimit < target {
    34  		t.Skip(fmt.Sprintf("system limit is less than desired test target: %d < %d", hardlimit, target))
    35  	}
    36  
    37  	if limit, err := Current(); err != nil || limit <= 0 {
    38  		t.Fatalf("failed to retrieve file descriptor limit (%d): %v", limit, err)
    39  	}
    40  	if _, err := Raise(uint64(target)); err != nil {
    41  		t.Fatalf("failed to raise file allowance")
    42  	}
    43  	if limit, err := Current(); err != nil || limit < target {
    44  		t.Fatalf("failed to retrieve raised descriptor limit (have %v, want %v): %v", limit, target, err)
    45  	}
    46  }