mirror of https://github.com/status-im/consul.git
120 lines
2.6 KiB
Go
120 lines
2.6 KiB
Go
package proxy
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import (
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"bufio"
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"net"
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"testing"
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"github.com/stretchr/testify/require"
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)
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// testConnSetup listens on a random TCP port and passes the accepted net.Conn
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// back to test code on returned channel. It then creates a source and
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// destination Conn. And a cleanup func
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func testConnSetup(t *testing.T) (net.Conn, net.Conn, func()) {
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t.Helper()
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l, err := net.Listen("tcp", "localhost:0")
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require.Nil(t, err)
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ch := make(chan net.Conn, 1)
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go func(ch chan net.Conn) {
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src, err := l.Accept()
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require.Nil(t, err)
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ch <- src
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}(ch)
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dst, err := net.Dial("tcp", l.Addr().String())
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require.Nil(t, err)
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src := <-ch
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stopper := func() {
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l.Close()
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src.Close()
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dst.Close()
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}
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return src, dst, stopper
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}
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func TestConn(t *testing.T) {
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src, dst, stop := testConnSetup(t)
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defer stop()
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c := NewConn(src, dst)
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retCh := make(chan error, 1)
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go func() {
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retCh <- c.CopyBytes()
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}()
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srcR := bufio.NewReader(src)
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dstR := bufio.NewReader(dst)
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_, err := src.Write([]byte("ping 1\n"))
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require.Nil(t, err)
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_, err = dst.Write([]byte("ping 2\n"))
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require.Nil(t, err)
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got, err := dstR.ReadString('\n')
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require.Equal(t, "ping 1\n", got)
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got, err = srcR.ReadString('\n')
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require.Equal(t, "ping 2\n", got)
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_, err = src.Write([]byte("pong 1\n"))
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require.Nil(t, err)
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_, err = dst.Write([]byte("pong 2\n"))
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require.Nil(t, err)
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got, err = dstR.ReadString('\n')
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require.Equal(t, "pong 1\n", got)
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got, err = srcR.ReadString('\n')
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require.Equal(t, "pong 2\n", got)
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c.Close()
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ret := <-retCh
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require.Nil(t, ret, "Close() should not cause error return")
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}
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func TestConnSrcClosing(t *testing.T) {
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src, dst, stop := testConnSetup(t)
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defer stop()
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c := NewConn(src, dst)
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retCh := make(chan error, 1)
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go func() {
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retCh <- c.CopyBytes()
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}()
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// If we close the src conn, we expect CopyBytes to return and src to be
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// closed too. No good way to assert that the conn is closed really other than
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// assume the retCh receive will hand unless CopyBytes exits and that
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// CopyBytes defers Closing both. i.e. if this test doesn't time out it's
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// good!
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src.Close()
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<-retCh
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}
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func TestConnDstClosing(t *testing.T) {
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src, dst, stop := testConnSetup(t)
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defer stop()
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c := NewConn(src, dst)
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retCh := make(chan error, 1)
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go func() {
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retCh <- c.CopyBytes()
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}()
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// If we close the dst conn, we expect CopyBytes to return and src to be
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// closed too. No good way to assert that the conn is closed really other than
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// assume the retCh receive will hand unless CopyBytes exits and that
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// CopyBytes defers Closing both. i.e. if this test doesn't time out it's
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// good!
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dst.Close()
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<-retCh
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}
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