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|
package portallocator
import (
"net"
"testing"
)
func reset() {
ReleaseAll()
}
func TestRequestNewPort(t *testing.T) {
defer reset()
port, err := RequestPort(defaultIP, "tcp", 0)
if err != nil {
t.Fatal(err)
}
if expected := BeginPortRange; port != expected {
t.Fatalf("Expected port %d got %d", expected, port)
}
}
func TestRequestSpecificPort(t *testing.T) {
defer reset()
port, err := RequestPort(defaultIP, "tcp", 5000)
if err != nil {
t.Fatal(err)
}
if port != 5000 {
t.Fatalf("Expected port 5000 got %d", port)
}
}
func TestReleasePort(t *testing.T) {
defer reset()
port, err := RequestPort(defaultIP, "tcp", 5000)
if err != nil {
t.Fatal(err)
}
if port != 5000 {
t.Fatalf("Expected port 5000 got %d", port)
}
if err := ReleasePort(defaultIP, "tcp", 5000); err != nil {
t.Fatal(err)
}
}
func TestReuseReleasedPort(t *testing.T) {
defer reset()
port, err := RequestPort(defaultIP, "tcp", 5000)
if err != nil {
t.Fatal(err)
}
if port != 5000 {
t.Fatalf("Expected port 5000 got %d", port)
}
if err := ReleasePort(defaultIP, "tcp", 5000); err != nil {
t.Fatal(err)
}
port, err = RequestPort(defaultIP, "tcp", 5000)
if err != nil {
t.Fatal(err)
}
}
func TestReleaseUnreadledPort(t *testing.T) {
defer reset()
port, err := RequestPort(defaultIP, "tcp", 5000)
if err != nil {
t.Fatal(err)
}
if port != 5000 {
t.Fatalf("Expected port 5000 got %d", port)
}
port, err = RequestPort(defaultIP, "tcp", 5000)
if err != ErrPortAlreadyAllocated {
t.Fatalf("Expected error %s got %s", ErrPortAlreadyAllocated, err)
}
}
func TestUnknowProtocol(t *testing.T) {
defer reset()
if _, err := RequestPort(defaultIP, "tcpp", 0); err != ErrUnknownProtocol {
t.Fatalf("Expected error %s got %s", ErrUnknownProtocol, err)
}
}
func TestAllocateAllPorts(t *testing.T) {
defer reset()
for i := 0; i <= EndPortRange-BeginPortRange; i++ {
port, err := RequestPort(defaultIP, "tcp", 0)
if err != nil {
t.Fatal(err)
}
if expected := BeginPortRange + i; port != expected {
t.Fatalf("Expected port %d got %d", expected, port)
}
}
if _, err := RequestPort(defaultIP, "tcp", 0); err != ErrAllPortsAllocated {
t.Fatalf("Expected error %s got %s", ErrAllPortsAllocated, err)
}
_, err := RequestPort(defaultIP, "udp", 0)
if err != nil {
t.Fatal(err)
}
// release a port in the middle and ensure we get another tcp port
port := BeginPortRange + 5
if err := ReleasePort(defaultIP, "tcp", port); err != nil {
t.Fatal(err)
}
newPort, err := RequestPort(defaultIP, "tcp", 0)
if err != nil {
t.Fatal(err)
}
if newPort != port {
t.Fatalf("Expected port %d got %d", port, newPort)
}
}
func BenchmarkAllocatePorts(b *testing.B) {
defer reset()
for i := 0; i < b.N; i++ {
for i := 0; i <= EndPortRange-BeginPortRange; i++ {
port, err := RequestPort(defaultIP, "tcp", 0)
if err != nil {
b.Fatal(err)
}
if expected := BeginPortRange + i; port != expected {
b.Fatalf("Expected port %d got %d", expected, port)
}
}
reset()
}
}
func TestPortAllocation(t *testing.T) {
defer reset()
ip := net.ParseIP("192.168.0.1")
ip2 := net.ParseIP("192.168.0.2")
if port, err := RequestPort(ip, "tcp", 80); err != nil {
t.Fatal(err)
} else if port != 80 {
t.Fatalf("Acquire(80) should return 80, not %d", port)
}
port, err := RequestPort(ip, "tcp", 0)
if err != nil {
t.Fatal(err)
}
if port <= 0 {
t.Fatalf("Acquire(0) should return a non-zero port")
}
if _, err := RequestPort(ip, "tcp", port); err == nil {
t.Fatalf("Acquiring a port already in use should return an error")
}
if newPort, err := RequestPort(ip, "tcp", 0); err != nil {
t.Fatal(err)
} else if newPort == port {
t.Fatalf("Acquire(0) allocated the same port twice: %d", port)
}
if _, err := RequestPort(ip, "tcp", 80); err == nil {
t.Fatalf("Acquiring a port already in use should return an error")
}
if _, err := RequestPort(ip2, "tcp", 80); err != nil {
t.Fatalf("It should be possible to allocate the same port on a different interface")
}
if _, err := RequestPort(ip2, "tcp", 80); err == nil {
t.Fatalf("Acquiring a port already in use should return an error")
}
if err := ReleasePort(ip, "tcp", 80); err != nil {
t.Fatal(err)
}
if _, err := RequestPort(ip, "tcp", 80); err != nil {
t.Fatal(err)
}
port, err = RequestPort(ip, "tcp", 0)
if err != nil {
t.Fatal(err)
}
port2, err := RequestPort(ip, "tcp", port+1)
if err != nil {
t.Fatal(err)
}
port3, err := RequestPort(ip, "tcp", 0)
if err != nil {
t.Fatal(err)
}
if port3 == port2 {
t.Fatal("Requesting a dynamic port should never allocate a used port")
}
}
|
