| // Copyright 2020 The Go Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style |
| // license that can be found in the LICENSE file. |
| |
| package ld |
| |
| import ( |
| "io/ioutil" |
| "os" |
| "path/filepath" |
| "runtime" |
| "testing" |
| ) |
| |
| // TestMMap ensures that we can actually mmap on every supported platform. |
| func TestMMap(t *testing.T) { |
| switch runtime.GOOS { |
| default: |
| t.Skip("unsupported OS") |
| case "darwin", "dragonfly", "freebsd", "linux", "openbsd", "windows": |
| } |
| dir, err := ioutil.TempDir("", "TestMMap") |
| if err != nil { |
| t.Fatal(err) |
| } |
| defer os.RemoveAll(dir) |
| filename := filepath.Join(dir, "foo.out") |
| ob := NewOutBuf(nil) |
| if err := ob.Open(filename); err != nil { |
| t.Fatalf("error opening file: %v", err) |
| } |
| defer ob.Close() |
| if err := ob.Mmap(1 << 20); err != nil { |
| t.Errorf("error mmapping file %v", err) |
| } |
| } |
