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support_test.go
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support_test.go
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package reign
import (
"fmt"
"runtime"
"time"
)
// timeout is the duration used for Receive() calls.
var timeout = time.Second
// This file contains code that supports the tests, including:
// * Creating various clusters and starting them up in various ways
// * A function that returns whether a chunk of code panics.
// This defines a "network test bed", which is two nodes that connect
// to each other, have two mailboxes each, and remotely-bound mailboxes
// for easily testing.
//
// With the design of reign, technically the whole "cluster" is really
// just all the 1-to-1 connections aggregated together, so the vast
// majority of the test suite is just testing two nodes connected together.
// (Possibly the whole thing, but we'll see.)
type NetworkTestBed struct {
node1connectionServer *connectionServer
node2connectionServer *connectionServer
node1mailbox1 *Mailbox
node1address1 *Address
node1mailbox2 *Mailbox
node1address2 *Address
node2mailbox1 *Mailbox
node2address1 *Address
node2mailbox2 *Mailbox
node2address2 *Address
// These "remote" addresses are all bound to the address indicated
// by their suffix, from the point of view of the "other" node, so
// fromNode2toNode1mailbox1 indicates the node 1's mailbox 1 from the
// point of view of node 2.
fromNode2toNode1mailbox1 *Address
fromNode2toNode1mailbox2 *Address
fromNode1toNode2mailbox1 *Address
fromNode1toNode2mailbox2 *Address
node1remoteMailboxes *remoteMailboxes
node2remoteMailboxes *remoteMailboxes
}
func (ntb *NetworkTestBed) terminateServers() {
ntb.node1connectionServer.Stop()
ntb.node2connectionServer.Stop()
}
func (ntb *NetworkTestBed) terminateMailboxes() {
ntb.node1mailbox1.Close()
ntb.node1mailbox2.Close()
ntb.node2mailbox1.Close()
ntb.node2mailbox2.Close()
ntb.node1connectionServer.Terminate()
ntb.node2connectionServer.Terminate()
}
func (ntb *NetworkTestBed) terminate() {
if r := recover(); r != nil {
fmt.Println("Error in test:", r)
buf := make([]byte, 100000)
n := runtime.Stack(buf, false)
fmt.Println("Stack at error:\n", string(buf[:n]))
}
ntb.terminateServers()
ntb.terminateMailboxes()
}
func (ntb *NetworkTestBed) with1(f func()) {
connectionsL.Lock()
defer connectionsL.Unlock()
connections = ntb.node1connectionServer
f()
}
func (ntb *NetworkTestBed) with2(f func()) {
connectionsL.Lock()
defer connectionsL.Unlock()
connections = ntb.node2connectionServer
f()
}
func testSpec() *ClusterSpec {
return &ClusterSpec{
Nodes: []*NodeDefinition{
{ID: NodeID(1), Address: "127.0.0.1:29876"},
{ID: NodeID(2), Address: "127.0.0.1:29877"},
},
PermittedProtocols: []string{"TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384"},
ClusterCertPEM: string(signing1Cert),
}
}
func unstartedTestbed(spec *ClusterSpec, l ClusterLogger) *NetworkTestBed {
if spec == nil {
spec = testSpec()
}
if l == nil {
l = NullLogger
}
ntb := &NetworkTestBed{}
var err error
spec.NodeKeyPEM = string(node2_1Key)
spec.NodeCertPEM = string(node2_1Cert)
setConnections(nil)
ntb.node2connectionServer, _, err = createFromSpec(spec, 2, l)
if err != nil {
panic(err)
}
setConnections(nil)
spec.NodeKeyPEM = string(node1_1Key)
spec.NodeCertPEM = string(node1_1Cert)
ntb.node1connectionServer, _, err = createFromSpec(spec, 1, l)
if err != nil {
panic(err)
}
setConnections(ntb.node1connectionServer)
ntb.node1address1, ntb.node1mailbox1 = connections.NewMailbox()
ntb.node1address1.connectionServer = ntb.node1connectionServer
ntb.node1address2, ntb.node1mailbox2 = connections.NewMailbox()
ntb.node1address2.connectionServer = ntb.node1connectionServer
setConnections(ntb.node2connectionServer)
ntb.node2address1, ntb.node2mailbox1 = connections.NewMailbox()
ntb.node2address1.connectionServer = ntb.node2connectionServer
ntb.node2address2, ntb.node2mailbox2 = connections.NewMailbox()
ntb.node2address2.connectionServer = ntb.node2connectionServer
ntb.fromNode2toNode1mailbox2 = &Address{
mailboxID: ntb.node2address1.mailboxID,
connectionServer: ntb.node1connectionServer,
}
ntb.fromNode1toNode2mailbox2 = &Address{
mailboxID: ntb.node2address2.mailboxID,
connectionServer: ntb.node1connectionServer,
}
ntb.fromNode2toNode1mailbox1 = &Address{
mailboxID: ntb.node1address1.mailboxID,
connectionServer: ntb.node2connectionServer,
}
ntb.fromNode1toNode2mailbox1 = &Address{
mailboxID: ntb.node1address2.mailboxID,
connectionServer: ntb.node2connectionServer,
}
ntb.node1remoteMailboxes = ntb.node1connectionServer.remoteMailboxes[2]
ntb.node2remoteMailboxes = ntb.node2connectionServer.remoteMailboxes[1]
setConnections(nil)
return ntb
}
func testbed(spec *ClusterSpec, l ClusterLogger) *NetworkTestBed {
if spec == nil {
spec = testSpec()
}
ntb := unstartedTestbed(spec, l)
go ntb.node2connectionServer.Serve()
ntb.node2connectionServer.waitForListen()
go ntb.node1connectionServer.Serve()
ntb.node1connectionServer.waitForConnection(NodeID(2))
ntb.node2connectionServer.waitForConnection(NodeID(1))
return ntb
}
func panics(f func()) (panics bool) {
defer func() {
if r := recover(); r != nil {
panics = true
}
}()
f()
return
}