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assertions.go
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assertions.go
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package simulate
import (
"context"
"github.com/aperturerobotics/bifrost/link"
"github.com/aperturerobotics/bifrost/stream"
stream_echo "github.com/aperturerobotics/bifrost/stream/echo"
"github.com/aperturerobotics/controllerbus/bus"
"github.com/pkg/errors"
)
// TestConnectivity tests for basic connectivity between two peers.
// Uses an echo test: dials the Echo controller.
func TestConnectivity(ctx context.Context, px0, px1 *Peer) error {
tb0 := px0.testbed
msv1, ms1Ref, err := bus.ExecOneOff(
ctx,
tb0.Bus,
link.NewOpenStreamWithPeer(
stream_echo.DefaultProtocolID,
px0.GetPeerID(),
px1.GetPeerID(),
0,
stream.OpenOpts{Reliable: true, Encrypted: true},
),
false,
nil,
)
if err != nil {
return err
}
defer ms1Ref.Release()
mns1 := msv1.GetValue().(link.MountedStream)
ms1 := mns1.GetStream()
// expect px0 stream remote peer to equal px1
mns1rp := mns1.GetLink().GetRemotePeer().Pretty()
if px1p := px1.GetPeerID().Pretty(); px1p != mns1rp {
return errors.Errorf(
"stream on p0 remote peer id %s != expected %s",
mns1rp,
px1p,
)
}
// expect px0 stream local peer to equal px0
mns1lp := mns1.GetLink().GetLocalPeer().Pretty()
if px0p := px0.GetPeerID().Pretty(); px0p != mns1lp {
return errors.Errorf(
"stream on p0 local peer id %s != expected %s",
mns1lp,
px0p,
)
}
data := []byte("testing 1234")
_, err = ms1.Write(data)
if err != nil {
return err
}
// expect remote to echo back exactly len(data) bytes
outData := make([]byte, len(data)*2)
on, oe := ms1.Read(outData)
if oe != nil {
return oe
}
outData = outData[:on]
if on != len(data) {
return errors.Errorf(
"length incorrect received %v != %v data: %v",
on,
len(data),
string(outData),
)
}
return nil
}