3609d74c92
This implements stat device and inode for WASI and GOOS=js, though it does not implement the host side for windows, yet. Doing windows requires plumbing as the values needed aren't exposed in Go. When we re-do the syscallfs file type to have a stat method, we can address that glitch. Meanwhile, I can find no Go sourcebase that does any better, though the closest is the implementation details of os.SameFile. I verified this with wasi-testsuite which now passes all but 1 case which is unrelated (we haven't yet implemented `lseek`). Signed-off-by: Adrian Cole <adrian@tetrate.io>
106 lines
2.5 KiB
Go
106 lines
2.5 KiB
Go
package platform
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import (
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"os"
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"path"
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"runtime"
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"testing"
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"time"
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"github.com/tetratelabs/wazero/internal/testing/require"
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)
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func Test_StatTimes(t *testing.T) {
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tmpDir := t.TempDir()
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file := path.Join(tmpDir, "file")
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err := os.WriteFile(file, []byte{}, 0o700)
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require.NoError(t, err)
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type test struct {
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name string
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atimeNsec, mtimeNsec int64
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}
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// Note: This sets microsecond granularity because Windows doesn't support
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// nanosecond.
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tests := []test{
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{
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name: "positive",
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atimeNsec: time.Unix(123, 4*1e3).UnixNano(),
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mtimeNsec: time.Unix(567, 8*1e3).UnixNano(),
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},
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{name: "zero"},
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}
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// linux and freebsd report inaccurate results when the input ts is negative.
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if runtime.GOOS == "windows" || runtime.GOOS == "darwin" {
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tests = append(tests,
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test{
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name: "negative",
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atimeNsec: time.Unix(-123, -4*1e3).UnixNano(),
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mtimeNsec: time.Unix(-567, -8*1e3).UnixNano(),
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},
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)
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}
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for _, tt := range tests {
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tc := tt
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t.Run(tc.name, func(t *testing.T) {
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err := os.Chtimes(file, time.UnixMicro(tc.atimeNsec/1e3), time.UnixMicro(tc.mtimeNsec/1e3))
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require.NoError(t, err)
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stat, err := os.Stat(file)
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require.NoError(t, err)
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atimeNsec, mtimeNsec, _ := StatTimes(stat)
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require.Equal(t, atimeNsec, tc.atimeNsec)
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require.Equal(t, mtimeNsec, tc.mtimeNsec)
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})
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}
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}
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func TestStatDeviceInode(t *testing.T) {
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if runtime.GOOS == "windows" {
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t.Skip("platform.StatDeviceInode not yet implemented on windows")
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}
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tmpDir := t.TempDir()
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path1 := path.Join(tmpDir, "1")
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fa, err := os.Create(path1)
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require.NoError(t, err)
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defer fa.Close()
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path2 := path.Join(tmpDir, "2")
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fb, err := os.Create(path2)
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require.NoError(t, err)
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defer fb.Close()
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stat1, err := fa.Stat()
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require.NoError(t, err)
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device1, inode1 := StatDeviceInode(stat1)
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stat2, err := fb.Stat()
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require.NoError(t, err)
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device2, inode2 := StatDeviceInode(stat2)
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// The files should be on the same device, but different inodes
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require.Equal(t, device1, device2)
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require.NotEqual(t, inode1, inode2)
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// Redoing stat should result in the same inodes
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stat1Again, err := os.Stat(path1)
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require.NoError(t, err)
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device1Again, inode1Again := StatDeviceInode(stat1Again)
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require.Equal(t, device1, device1Again)
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require.Equal(t, inode1, inode1Again)
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// Renaming a file shouldn't change its inodes
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require.NoError(t, os.Rename(path1, path2))
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stat1Again, err = os.Stat(path2)
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require.NoError(t, err)
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device1Again, inode1Again = StatDeviceInode(stat1Again)
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require.Equal(t, device1, device1Again)
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require.Equal(t, inode1, inode1Again)
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}
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