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package devices
import (
"errors"
"os"
"testing"
"golang.org/x/sys/unix"
)
func TestDeviceFromPathLstatFailure(t *testing.T) {
testError := errors.New("test error")
// Override unix.Lstat to inject error.
unixLstat = func(path string, stat *unix.Stat_t) error {
return testError
}
_, err := DeviceFromPath("", "")
if err != testError {
t.Fatalf("Unexpected error %v, expected %v", err, testError)
}
}
func TestHostDevicesIoutilReadDirFailure(t *testing.T) {
testError := errors.New("test error")
// Override ioutil.ReadDir to inject error.
ioutilReadDir = func(dirname string) ([]os.FileInfo, error) {
return nil, testError
}
_, err := HostDevices()
if err != testError {
t.Fatalf("Unexpected error %v, expected %v", err, testError)
}
}
func TestHostDevicesIoutilReadDirDeepFailure(t *testing.T) {
testError := errors.New("test error")
called := false
// Override ioutil.ReadDir to inject error after the first call.
ioutilReadDir = func(dirname string) ([]os.FileInfo, error) {
if called {
return nil, testError
}
called = true
// Provoke a second call.
fi, err := os.Lstat("/tmp")
if err != nil {
t.Fatalf("Unexpected error %v", err)
}
return []os.FileInfo{fi}, nil
}
_, err := HostDevices()
if err != testError {
t.Fatalf("Unexpected error %v, expected %v", err, testError)
}
}
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