d5c321e29a
This adds `platform.Readdirnames` which is preparation work before doing something similar for reading the directory. We use this in gojs as it doesn't actually need dirents, rather just names. Signed-off-by: Adrian Cole <adrian@tetrate.io>
80 lines
1.9 KiB
Go
80 lines
1.9 KiB
Go
package platform_test
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import (
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"io/fs"
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"os"
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"runtime"
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"sort"
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"syscall"
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"testing"
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"github.com/tetratelabs/wazero/internal/fstest"
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"github.com/tetratelabs/wazero/internal/platform"
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"github.com/tetratelabs/wazero/internal/testing/require"
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)
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func TestReaddirnames(t *testing.T) {
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t.Parallel()
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tmpDir := t.TempDir()
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require.NoError(t, fstest.WriteTestFiles(tmpDir))
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dirFS := os.DirFS(tmpDir)
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tests := []struct {
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name string
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fs fs.FS
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}{
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{name: "os.DirFS", fs: dirFS}, // To test readdirnamesFile
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{name: "fstest.MapFS", fs: fstest.FS}, // To test adaptation of ReadDirFile
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}
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for _, tc := range tests {
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tc := tc
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t.Run(tc.name, func(t *testing.T) {
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dirF, err := tc.fs.Open(".")
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require.NoError(t, err)
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defer dirF.Close()
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t.Run("dir", func(t *testing.T) {
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names, err := platform.Readdirnames(dirF, -1)
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require.NoError(t, err)
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sort.Strings(names)
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require.Equal(t, []string{"animals.txt", "dir", "empty.txt", "emptydir", "sub"}, names)
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// read again even though it is exhausted
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_, err = platform.Readdirnames(dirF, 100)
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require.EqualErrno(t, syscall.EIO, err)
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})
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// windows and fstest.MapFS allow you to read a closed dir
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if runtime.GOOS != "windows" && tc.name != "fstest.MapFS" {
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t.Run("closed dir", func(t *testing.T) {
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require.NoError(t, dirF.Close())
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_, err := platform.Readdirnames(dirF, -1)
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require.EqualErrno(t, syscall.EIO, err)
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})
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}
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fileF, err := tc.fs.Open("empty.txt")
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require.NoError(t, err)
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defer fileF.Close()
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t.Run("file", func(t *testing.T) {
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_, err := platform.Readdirnames(fileF, -1)
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require.EqualErrno(t, syscall.ENOTDIR, err)
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})
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subdirF, err := tc.fs.Open("sub")
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require.NoError(t, err)
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defer subdirF.Close()
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t.Run("subdir", func(t *testing.T) {
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names, err := platform.Readdirnames(subdirF, -1)
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require.NoError(t, err)
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require.Equal(t, []string{"test.txt"}, names)
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})
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})
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}
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}
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