Function setupBackends

balancer/leastrequest/leastrequest_test.go:148–157

setupBackends spins up three test backends, each listening on a port on localhost. The three backends always reply with an empty response with no error, and for streaming receive until hitting an EOF error.

(t *testing.T, numBackends int)

// localhost. The three backends always reply with an empty response with no
// error, and for streaming receive until hitting an EOF error.
func setupBackends(t *testing.T, numBackends int) []string {
	t.Helper()
	addresses := make([]string, numBackends)
	backends := startBackends(t, numBackends)
	// Construct and start working backends.
	for i := 0; i < numBackends; i++ {
		addresses[i] = backends[i].Address
	}
	return addresses
}

// checkRoundRobinRPCs verifies that EmptyCall RPCs on the given ClientConn,
// connected to a server exposing the test.grpc_testing.TestService, are