95 lines
1.8 KiB
Go
95 lines
1.8 KiB
Go
package beam
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import (
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"fmt"
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"io/ioutil"
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"os"
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"sync"
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"testing"
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)
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type msg struct {
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payload []byte
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attachment *os.File
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}
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func (m msg) String() string {
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return MsgDesc(m.payload, m.attachment)
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}
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type mockReceiver []msg
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func (r *mockReceiver) Send(p []byte, a *os.File) error {
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(*r) = append((*r), msg{p, a})
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return nil
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}
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func TestSendNoSinkNoRoute(t *testing.T) {
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r := NewRouter(nil)
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if err := r.Send([]byte("hello"), nil); err == nil {
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t.Fatalf("error expected")
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}
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a, b, err := os.Pipe()
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if err != nil {
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t.Fatal(err)
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}
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defer a.Close()
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defer b.Close()
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if err := r.Send([]byte("foo bar baz"), a); err == nil {
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t.Fatalf("error expected")
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}
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}
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func TestSendSinkNoRoute(t *testing.T) {
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var sink mockReceiver
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r := NewRouter(&sink)
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if err := r.Send([]byte("hello"), nil); err != nil {
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t.Fatal(err)
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}
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a, b, err := os.Pipe()
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if err != nil {
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t.Fatal(err)
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}
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defer a.Close()
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defer b.Close()
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if err := r.Send([]byte("world"), a); err != nil {
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t.Fatal(err)
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}
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if len(sink) != 2 {
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t.Fatalf("%#v\n", sink)
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}
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if string(sink[0].payload) != "hello" {
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t.Fatalf("%#v\n", sink)
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}
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if sink[0].attachment != nil {
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t.Fatalf("%#v\n", sink)
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}
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if string(sink[1].payload) != "world" {
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t.Fatalf("%#v\n", sink)
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}
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if sink[1].attachment == nil || sink[1].attachment.Fd() > 42 || sink[1].attachment.Fd() < 0 {
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t.Fatalf("%v\n", sink)
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}
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var tasks sync.WaitGroup
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tasks.Add(2)
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go func() {
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defer tasks.Done()
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fmt.Printf("[%d] Reading from '%d'\n", os.Getpid(), sink[1].attachment.Fd())
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data, err := ioutil.ReadAll(sink[1].attachment)
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if err != nil {
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t.Fatal(err)
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}
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if string(data) != "foo bar\n" {
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t.Fatalf("%v\n", string(data))
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}
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}()
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go func() {
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defer tasks.Done()
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fmt.Printf("[%d] writing to '%d'\n", os.Getpid(), a.Fd())
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if _, err := fmt.Fprintf(b, "foo bar\n"); err != nil {
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t.Fatal(err)
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}
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b.Close()
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}()
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tasks.Wait()
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}
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