| // Copyright 2015 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 mmap |
| |
| import ( |
| "bytes" |
| "io" |
| "os" |
| "testing" |
| ) |
| |
| func TestOpen(t *testing.T) { |
| const filename = "mmap_test.go" |
| r, err := Open(filename) |
| if err != nil { |
| t.Fatalf("Open: %v", err) |
| } |
| got := make([]byte, r.Len()) |
| if _, err := r.ReadAt(got, 0); err != nil && err != io.EOF { |
| t.Fatalf("ReadAt: %v", err) |
| } |
| want, err := os.ReadFile(filename) |
| if err != nil { |
| t.Fatalf("os.ReadFile: %v", err) |
| } |
| if len(got) != len(want) { |
| t.Fatalf("got %d bytes, want %d", len(got), len(want)) |
| } |
| if !bytes.Equal(got, want) { |
| t.Fatalf("\ngot %q\nwant %q", string(got), string(want)) |
| } |
| } |