github.com/pingcap/tiflow@v0.0.0-20240520035814-5bf52d54e205/dm/pkg/utils/file_test.go (about)

     1  // Copyright 2020 PingCAP, Inc.
     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  // See the License for the specific language governing permissions and
    12  // limitations under the License.
    13  
    14  package utils
    15  
    16  import (
    17  	"os"
    18  	"path/filepath"
    19  	"testing"
    20  
    21  	"github.com/pingcap/tiflow/dm/pkg/terror"
    22  	"github.com/stretchr/testify/require"
    23  )
    24  
    25  func TestFile(t *testing.T) {
    26  	// dir not exists
    27  	require.False(t, IsFileExists("invalid-path"))
    28  	require.False(t, IsDirExists("invalid-path"))
    29  	size, err := GetFileSize("invalid-path")
    30  	require.True(t, terror.ErrGetFileSize.Equal(err))
    31  	require.Equal(t, int64(0), size)
    32  
    33  	// dir exists
    34  	d := t.TempDir()
    35  	require.False(t, IsFileExists(d))
    36  	require.True(t, IsDirExists(d))
    37  	size, err = GetFileSize(d)
    38  	require.True(t, terror.ErrGetFileSize.Equal(err))
    39  	require.Equal(t, int64(0), size)
    40  
    41  	// file not exists
    42  	f := filepath.Join(d, "text-file")
    43  	require.False(t, IsFileExists(f))
    44  	require.False(t, IsDirExists(f))
    45  	size, err = GetFileSize(f)
    46  	require.True(t, terror.ErrGetFileSize.Equal(err))
    47  	require.Equal(t, int64(0), size)
    48  
    49  	// create a file
    50  	require.NoError(t, os.WriteFile(f, []byte("some content"), 0o644))
    51  	require.True(t, IsFileExists(f))
    52  	require.False(t, IsDirExists(f))
    53  	size, err = GetFileSize(f)
    54  	require.NoError(t, err)
    55  	require.Equal(t, int64(len("some content")), size)
    56  }