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42d997f639
Normally os.OpenFile under Windows does not allow renaming or deleting open file handles. This package provides equivelents for os.OpenFile, os.Open and os.Create which do allow that.
155 lines
3.1 KiB
Go
155 lines
3.1 KiB
Go
package file
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import (
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"fmt"
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"io"
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"io/ioutil"
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"os"
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"path"
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"testing"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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)
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// Create a test directory then tidy up
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func testDir(t *testing.T) (string, func()) {
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dir, err := ioutil.TempDir("", "rclone-test")
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require.NoError(t, err)
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return dir, func() {
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assert.NoError(t, os.RemoveAll(dir))
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}
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}
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// This lists dir and checks the listing is as expected without checking the size
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func checkListingNoSize(t *testing.T, dir string, want []string) {
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var got []string
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nodes, err := ioutil.ReadDir(dir)
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require.NoError(t, err)
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for _, node := range nodes {
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got = append(got, fmt.Sprintf("%s,%v", node.Name(), node.IsDir()))
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}
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assert.Equal(t, want, got)
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}
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// This lists dir and checks the listing is as expected
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func checkListing(t *testing.T, dir string, want []string) {
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var got []string
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nodes, err := ioutil.ReadDir(dir)
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require.NoError(t, err)
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for _, node := range nodes {
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got = append(got, fmt.Sprintf("%s,%d,%v", node.Name(), node.Size(), node.IsDir()))
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}
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assert.Equal(t, want, got)
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}
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// Test we can rename an open file
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func TestOpenFileRename(t *testing.T) {
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dir, tidy := testDir(t)
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defer tidy()
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filepath := path.Join(dir, "file1")
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f, err := Create(filepath)
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require.NoError(t, err)
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_, err = f.Write([]byte("hello"))
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assert.NoError(t, err)
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checkListingNoSize(t, dir, []string{
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"file1,false",
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})
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// Delete the file first
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assert.NoError(t, os.Remove(filepath))
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// .. then close it
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assert.NoError(t, f.Close())
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checkListing(t, dir, nil)
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}
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// Test we can delete an open file
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func TestOpenFileDelete(t *testing.T) {
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dir, tidy := testDir(t)
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defer tidy()
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filepath := path.Join(dir, "file1")
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f, err := Create(filepath)
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require.NoError(t, err)
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_, err = f.Write([]byte("hello"))
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assert.NoError(t, err)
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checkListingNoSize(t, dir, []string{
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"file1,false",
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})
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// Rename the file while open
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filepath2 := path.Join(dir, "file2")
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assert.NoError(t, os.Rename(filepath, filepath2))
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checkListingNoSize(t, dir, []string{
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"file2,false",
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})
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// .. then close it
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assert.NoError(t, f.Close())
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checkListing(t, dir, []string{
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"file2,5,false",
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})
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}
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// Smoke test the Open, OpenFile and Create functions
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func TestOpenFileOperations(t *testing.T) {
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dir, tidy := testDir(t)
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defer tidy()
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filepath := path.Join(dir, "file1")
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// Create the file
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f, err := Create(filepath)
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require.NoError(t, err)
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_, err = f.Write([]byte("hello"))
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assert.NoError(t, err)
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assert.NoError(t, f.Close())
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checkListing(t, dir, []string{
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"file1,5,false",
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})
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// Append onto the file
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f, err = OpenFile(filepath, os.O_RDWR|os.O_APPEND, 0666)
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require.NoError(t, err)
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_, err = f.Write([]byte("HI"))
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assert.NoError(t, err)
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assert.NoError(t, f.Close())
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checkListing(t, dir, []string{
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"file1,7,false",
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})
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// Read it back in
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f, err = Open(filepath)
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require.NoError(t, err)
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var b = make([]byte, 10)
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n, err := f.Read(b)
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assert.True(t, err == io.EOF || err == nil)
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assert.Equal(t, 7, n)
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assert.Equal(t, "helloHI", string(b[:n]))
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assert.NoError(t, f.Close())
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checkListing(t, dir, []string{
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"file1,7,false",
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})
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}
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