Start to use dispatcher

client/internal/lazyconn/activity/allocator_test.go

@@ -0,0 +1,34 @@
+package activity
+
+import (
+	"testing"
+)
+
+func Test_portAllocator_newConn(t *testing.T) {
+	pa := newPortAllocator()
+	for i := 65535; i > 65535-10; i-- {
+		conn, addr, err := pa.newConn()
+		if err != nil {
+			t.Fatalf("newConn() error = %v, want nil", err)
+		}
+		if addr.Port != i {
+			t.Errorf("newConn() addr.Port = %v, want %d", addr.Port, i)
+		}
+		_ = conn.Close()
+	}
+}
+
+func Test_portAllocator_port_bottom(t *testing.T) {
+	pa := newPortAllocator()
+	pa.nextFreePort = 1025
+
+	port := pa.nextPort()
+	if port != 1025 {
+		t.Errorf("nextPort() = %v, want %d", port, 1)
+	}
+
+	port = pa.nextPort()
+	if port != 65535 {
+		t.Errorf("nextPort() = %v, want %d", port, 65535)
+	}
+}