p2p/discv5: added new topic discovery package

p2p/discv5/sim_testmain_test.go

@@ -0,0 +1,43 @@
+// Copyright 2016 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Lesser General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// The go-ethereum library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+// +build go1.4,nacl,faketime_simulation
+
+package discv5
+
+import (
+	"os"
+	"runtime"
+	"testing"
+	"unsafe"
+)
+
+// Enable fake time mode in the runtime, like on the go playground.
+// There is a slight chance that this won't work because some go code
+// might have executed before the variable is set.
+
+//go:linkname faketime runtime.faketime
+var faketime = 1
+
+func TestMain(m *testing.M) {
+	// We need to use unsafe somehow in order to get access to go:linkname.
+	_ = unsafe.Sizeof(0)
+
+	// Run the actual test. runWithPlaygroundTime ensures that the only test
+	// that runs is the one calling it.
+	runtime.GOMAXPROCS(8)
+	os.Exit(m.Run())
+}