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transportaction.go
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transportaction.go
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// Copyright (c) 2018 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package peertest
import (
"fmt"
"testing"
"github.com/stretchr/testify/assert"
"go.uber.org/yarpc/api/peer"
)
// TransportDeps are passed through all the TransportActions in order to pass certain
// state in between Actions
type TransportDeps struct {
PeerIdentifiers map[string]peer.Identifier
Subscribers map[string]peer.Subscriber
}
// TransportAction defines actions that can be applied to an Transport
type TransportAction interface {
// Apply runs a function on the Transport and asserts the result
Apply(*testing.T, peer.Transport, TransportDeps)
}
// RetainAction will execute the RetainPeer method on the Transport
type RetainAction struct {
InputIdentifierID string
InputSubscriberID string
ExpectedErr error
ExpectedPeerID string
}
// Apply will execute the RetainPeer method on the Transport
func (a RetainAction) Apply(t *testing.T, transport peer.Transport, deps TransportDeps) {
peerID := deps.PeerIdentifiers[a.InputIdentifierID]
sub := deps.Subscribers[a.InputSubscriberID]
p, err := transport.RetainPeer(peerID, sub)
if a.ExpectedErr != nil {
assert.Equal(t, a.ExpectedErr, err)
assert.Nil(t, p)
return
}
if assert.NoError(t, err) && assert.NotNil(t, p) {
assert.Equal(t, a.ExpectedPeerID, p.Identifier())
}
}
// ReleaseAction will execute the ReleasePeer method on the Transport
type ReleaseAction struct {
InputIdentifierID string
InputSubscriberID string
ExpectedErrType error
}
// Apply will execute the ReleasePeer method on the Transport
func (a ReleaseAction) Apply(t *testing.T, transport peer.Transport, deps TransportDeps) {
peerID := deps.PeerIdentifiers[a.InputIdentifierID]
sub := deps.Subscribers[a.InputSubscriberID]
err := transport.ReleasePeer(peerID, sub)
if a.ExpectedErrType != nil && assert.Error(t, err) {
assert.IsType(t, a.ExpectedErrType, err)
} else {
assert.Nil(t, err)
}
}
// ApplyTransportActions runs all the TransportActions on the peer Transport
func ApplyTransportActions(t *testing.T, transport peer.Transport, actions []TransportAction, d TransportDeps) {
for i, action := range actions {
t.Run(fmt.Sprintf("action #%d: %T", i, action), func(t *testing.T) {
action.Apply(t, transport, d)
})
}
}