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94 lines
2.1 KiB
94 lines
2.1 KiB
package blob
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import (
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"fmt"
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"os"
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"path/filepath"
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"runtime"
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"strings"
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"testing"
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)
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func isCaseSensitive(dir string) bool {
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defer func() {
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os.Remove(filepath.Join(dir, "_casecheck"))
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}()
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exists := func(file string) bool {
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_, err := os.Stat(file)
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return err == nil
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}
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file := filepath.Join(dir, "_casecheck")
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FILE := filepath.Join(dir, "_CASECHECK")
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if exists(file) || exists(FILE) {
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panic(fmt.Sprintf("_casecheck already exists in %q; remove and try again.", dir))
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}
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err := os.WriteFile(file, nil, 0o666)
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if err != nil {
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panic(err)
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}
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return !exists(FILE)
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}
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func isCI() bool {
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return os.Getenv("CI") != ""
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}
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const volumeHint = `
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Unable to locate case-insensitive TMPDIR on darwin.
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To run tests, create the case-insensitive volume /Volumes/data:
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$ sudo diskutil apfs addVolume disk1 APFSX data -mountpoint /Volumes/data
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or run with:
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CI=1 go test ./...
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`
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// useCaseInsensitiveTempDir sets TMPDIR to a case-insensitive directory
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// can find one, otherwise it skips the test if the CI environment variable is
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// set, or GOOS is not darwin.
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func useCaseInsensitiveTempDir(t *testing.T) bool {
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if isCaseSensitive(os.TempDir()) {
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// Use the default temp dir if it is already case-sensitive.
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return true
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}
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if runtime.GOOS == "darwin" {
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// If darwin, check for the special case-sensitive volume and
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// use it if available.
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const volume = "/Volumes/data"
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_, err := os.Stat(volume)
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if err == nil {
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tmpdir := filepath.Join(volume, "tmp")
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os.MkdirAll(tmpdir, 0o700)
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t.Setenv("TMPDIR", tmpdir)
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return true
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}
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if isCI() {
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// Special case darwin in CI; it is not case-sensitive
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// by default, and we will be testing other platforms
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// that are case-sensitive, so we'll have the test
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// being skipped covered there.
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t.Skip("Skipping test in CI for darwin; TMPDIR is not case-insensitive.")
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}
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}
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if !isCI() {
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// Require devs to always tests with a case-insensitive TMPDIR.
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// TODO(bmizerany): Print platform-specific instructions or
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// link to docs on that topic.
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lines := strings.Split(volumeHint, "\n")
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for _, line := range lines {
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t.Skip(line)
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}
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}
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return false
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}
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