github.com/sourcegraph/jsonrpc2@v0.2.0/conn_opt_test.go (about)

     1  package jsonrpc2_test
     2  
     3  import (
     4  	"bufio"
     5  	"context"
     6  	"io"
     7  	"log"
     8  	"net"
     9  	"testing"
    10  
    11  	"github.com/sourcegraph/jsonrpc2"
    12  )
    13  
    14  func TestSetLogger(t *testing.T) {
    15  	ctx, cancel := context.WithCancel(context.Background())
    16  	defer cancel()
    17  
    18  	rd, wr := io.Pipe()
    19  	defer rd.Close()
    20  	defer wr.Close()
    21  
    22  	buf := bufio.NewReader(rd)
    23  	logger := log.New(wr, "", log.Lmsgprefix)
    24  
    25  	a, b := net.Pipe()
    26  	connA := jsonrpc2.NewConn(
    27  		ctx,
    28  		jsonrpc2.NewBufferedStream(a, jsonrpc2.VSCodeObjectCodec{}),
    29  		noopHandler{},
    30  		jsonrpc2.SetLogger(logger),
    31  	)
    32  	connB := jsonrpc2.NewConn(
    33  		ctx,
    34  		jsonrpc2.NewBufferedStream(b, jsonrpc2.VSCodeObjectCodec{}),
    35  		noopHandler{},
    36  	)
    37  	defer connA.Close()
    38  	defer connB.Close()
    39  
    40  	// Write a response with no corresponding request.
    41  	if err := connB.Reply(ctx, jsonrpc2.ID{Num: 0}, nil); err != nil {
    42  		t.Fatal(err)
    43  	}
    44  
    45  	want := "jsonrpc2: ignoring response #0 with no corresponding request\n"
    46  	got, err := buf.ReadString('\n')
    47  	if err != nil {
    48  		t.Fatal(err)
    49  	}
    50  	if got != want {
    51  		t.Fatalf("got %q, want %q", got, want)
    52  	}
    53  }