github.com/zuoyebang/bitalosdb@v1.1.1-0.20240516111551-79a8c4d8ce20/internal/vfs/fd_test.go (about)

     1  // Copyright 2021 The Bitalosdb author(hustxrb@163.com) and other contributors.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package vfs
    16  
    17  import (
    18  	"os"
    19  	"testing"
    20  	"time"
    21  
    22  	"github.com/stretchr/testify/require"
    23  )
    24  
    25  func TestFileWrappersHaveFd(t *testing.T) {
    26  	// Use the real filesystem so that we can test vfs.Default, which returns
    27  	// files with Fd().
    28  	tmpf, err := os.CreateTemp("", "bitalosdb-db-fd-file")
    29  	require.NoError(t, err)
    30  	filename := tmpf.Name()
    31  	defer os.Remove(filename)
    32  
    33  	// File wrapper case 1: Check if diskHealthCheckingFile has Fd().
    34  	fs2 := WithDiskHealthChecks(Default, 10*time.Second, func(s string, duration time.Duration) {})
    35  	f2, err := fs2.Open(filename)
    36  	require.NoError(t, err)
    37  	if _, ok := f2.(fdGetter); !ok {
    38  		t.Fatal("expected diskHealthCheckingFile to export Fd() method")
    39  	}
    40  	// File wrapper case 2: Check if syncingFile has Fd().
    41  	f3 := NewSyncingFile(f2, SyncingFileOptions{BytesPerSync: 8 << 10 /* 8 KB */})
    42  	if _, ok := f3.(fdGetter); !ok {
    43  		t.Fatal("expected syncingFile to export Fd() method")
    44  	}
    45  	require.NoError(t, f2.Close())
    46  }