os: skip Open("/") on Android

It's not supported in an app context:

$ go test -short os
--- FAIL: TestChdirAndGetwd (0.00s)
    os_test.go:1213: Open /: open /: permission denied

Change-Id: I56b951f925a50fd67715ee2f1de64951ee867e91
Reviewed-on: https://go-review.googlesource.com/c/go/+/170946
Run-TryBot: Elias Naur <mail@eliasnaur.com>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>

diff --git a/src/os/os_test.go b/src/os/os_test.go
index 1de46c29f50c30df734f321ffd6cd59fb663956c..b7e26f47b710e1e28014b54d1999c1f3619f4b3c 100644 (file)
--- a/src/os/os_test.go
+++ b/src/os/os_test.go
@@ -1185,7 +1185,7 @@ func TestChdirAndGetwd(t *testing.T) {
        // /usr/bin does not usually exist on Plan 9 or Android.
        switch runtime.GOOS {
        case "android":
-               dirs = []string{"/", "/system/bin"}
+               dirs = []string{"/system/bin"}
        case "plan9":
                dirs = []string{"/", "/usr"}
        case "darwin":