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// Copyright (c) Tailscale Inc & contributors
// SPDX-License-Identifier: BSD-3-Clause
//go:build !ts_omit_drive
package ipnlocal
import (
"errors"
"net/http"
"net/http/httptest"
"testing"
)
// TestDriveTransportRoundTrip_NetworkError tests that driveTransport.RoundTrip
// doesn't panic when the underlying transport returns a nil response with an
// error.
//
// See: https://github.com/tailscale/tailscale/issues/17306
func TestDriveTransportRoundTrip_NetworkError(t *testing.T) {
b := newTestLocalBackend(t)
testErr := errors.New("network connection failed")
mockTransport := &mockRoundTripper{
err: testErr,
}
dt := &driveTransport{
b: b,
tr: mockTransport,
}
req := httptest.NewRequest("GET", "http://100.64.0.1:1234/some/path", nil)
resp, err := dt.RoundTrip(req)
if err == nil {
t.Fatal("got nil error, expected non-nil")
} else if !errors.Is(err, testErr) {
t.Errorf("got error %v, expected %v", err, testErr)
}
if resp != nil {
t.Errorf("wanted nil response, got %v", resp)
}
}
type mockRoundTripper struct {
err error
}
func (m *mockRoundTripper) RoundTrip(req *http.Request) (*http.Response, error) {
return nil, m.err
}
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