github.com/Kalvelign/golang-windows-sys-lib@v0.0.0-20221121121202-63da651435e1/unix/getfsstat_test.go (about)

     1  // Copyright 2022 The Go Authors. All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  //go:build darwin || dragonfly || freebsd || openbsd
     6  // +build darwin dragonfly freebsd openbsd
     7  
     8  package unix_test
     9  
    10  import (
    11  	"os/exec"
    12  	"testing"
    13  
    14  	"golang.org/x/sys/unix"
    15  )
    16  
    17  func TestGetfsstat(t *testing.T) {
    18  	n, err := unix.Getfsstat(nil, unix.MNT_NOWAIT)
    19  	if err != nil {
    20  		t.Fatal(err)
    21  	}
    22  
    23  	data := make([]unix.Statfs_t, n)
    24  	n2, err := unix.Getfsstat(data, unix.MNT_NOWAIT)
    25  	if err != nil {
    26  		t.Fatal(err)
    27  	}
    28  	if n != n2 {
    29  		t.Errorf("Getfsstat(nil) = %d, but subsequent Getfsstat(slice) = %d", n, n2)
    30  	}
    31  	for i, stat := range data {
    32  		if stat == (unix.Statfs_t{}) {
    33  			t.Errorf("index %v is an empty Statfs_t struct", i)
    34  		}
    35  	}
    36  	if t.Failed() {
    37  		for i, stat := range data[:n2] {
    38  			t.Logf("data[%v] = %+v", i, stat)
    39  		}
    40  		mount, err := exec.Command("mount").CombinedOutput()
    41  		if err != nil {
    42  			t.Logf("mount: %v\n%s", err, mount)
    43  		} else {
    44  			t.Logf("mount: %s", mount)
    45  		}
    46  	}
    47  }