First version

mt4/client_test.go

@@ -0,0 +1,45 @@
+package mt4
+
+import (
+	"context"
+	"net"
+	"strings"
+	"testing"
+	"time"
+
+	ic "go.popov.link/metatrader4/internal/conn"
+	"go.popov.link/metatrader4/internal/proto"
+)
+
+// mockServer returns net.Pipe connections with server writing resp to client.
+func mockServer(response string) (net.Conn, net.Conn) {
+	server, client := net.Pipe()
+	go func() {
+		defer server.Close()
+		buf := make([]byte, 1024)
+		server.Read(buf) // read request ignoring
+		server.Write([]byte(response))
+	}()
+	return client, server
+}
+
+func TestClientExecute(t *testing.T) {
+	reqParams := map[string]string{"A": "1"}
+	encoded, err := proto.EncodeParams(reqParams)
+	if err != nil {
+		t.Fatalf("encode params: %v", err)
+	}
+	resp := encoded
+	clientConn, _ := mockServer(resp)
+
+	c := &Client{addr: "", port: 0, autoClose: true, readTimeout: time.Second, writeTimeout: time.Second, dialTimeout: time.Second}
+	c.c = ic.FromNetConn(clientConn)
+
+	res, err := c.Execute(context.Background(), "CMD", reqParams)
+	if err != nil {
+		t.Fatalf("execute: %v", err)
+	}
+	if !strings.Contains(res, "1") {
+		t.Fatalf("unexpected response %q", res)
+	}
+}