diff options
Diffstat (limited to 'runtime/networkdriver/network_test.go')
| -rw-r--r-- | runtime/networkdriver/network_test.go | 190 |
1 files changed, 190 insertions, 0 deletions
diff --git a/runtime/networkdriver/network_test.go b/runtime/networkdriver/network_test.go new file mode 100644 index 0000000000..6224c2dffb --- /dev/null +++ b/runtime/networkdriver/network_test.go @@ -0,0 +1,190 @@ +package networkdriver + +import ( + "github.com/dotcloud/docker/pkg/netlink" + "net" + "testing" +) + +func TestNonOverlapingNameservers(t *testing.T) { + network := &net.IPNet{ + IP: []byte{192, 168, 0, 1}, + Mask: []byte{255, 255, 255, 0}, + } + nameservers := []string{ + "127.0.0.1/32", + } + + if err := CheckNameserverOverlaps(nameservers, network); err != nil { + t.Fatal(err) + } +} + +func TestOverlapingNameservers(t *testing.T) { + network := &net.IPNet{ + IP: []byte{192, 168, 0, 1}, + Mask: []byte{255, 255, 255, 0}, + } + nameservers := []string{ + "192.168.0.1/32", + } + + if err := CheckNameserverOverlaps(nameservers, network); err == nil { + t.Fatalf("Expected error %s got %s", ErrNetworkOverlapsWithNameservers, err) + } +} + +func TestCheckRouteOverlaps(t *testing.T) { + orig := networkGetRoutesFct + defer func() { + networkGetRoutesFct = orig + }() + networkGetRoutesFct = func() ([]netlink.Route, error) { + routesData := []string{"10.0.2.0/32", "10.0.3.0/24", "10.0.42.0/24", "172.16.42.0/24", "192.168.142.0/24"} + + routes := []netlink.Route{} + for _, addr := range routesData { + _, netX, _ := net.ParseCIDR(addr) + routes = append(routes, netlink.Route{IPNet: netX}) + } + return routes, nil + } + + _, netX, _ := net.ParseCIDR("172.16.0.1/24") + if err := CheckRouteOverlaps(netX); err != nil { + t.Fatal(err) + } + + _, netX, _ = net.ParseCIDR("10.0.2.0/24") + if err := CheckRouteOverlaps(netX); err == nil { + t.Fatalf("10.0.2.0/24 and 10.0.2.0 should overlap but it doesn't") + } +} + +func TestCheckNameserverOverlaps(t *testing.T) { + nameservers := []string{"10.0.2.3/32", "192.168.102.1/32"} + + _, netX, _ := net.ParseCIDR("10.0.2.3/32") + + if err := CheckNameserverOverlaps(nameservers, netX); err == nil { + t.Fatalf("%s should overlap 10.0.2.3/32 but doesn't", netX) + } + + _, netX, _ = net.ParseCIDR("192.168.102.2/32") + + if err := CheckNameserverOverlaps(nameservers, netX); err != nil { + t.Fatalf("%s should not overlap %v but it does", netX, nameservers) + } +} + +func AssertOverlap(CIDRx string, CIDRy string, t *testing.T) { + _, netX, _ := net.ParseCIDR(CIDRx) + _, netY, _ := net.ParseCIDR(CIDRy) + if !NetworkOverlaps(netX, netY) { + t.Errorf("%v and %v should overlap", netX, netY) + } +} + +func AssertNoOverlap(CIDRx string, CIDRy string, t *testing.T) { + _, netX, _ := net.ParseCIDR(CIDRx) + _, netY, _ := net.ParseCIDR(CIDRy) + if NetworkOverlaps(netX, netY) { + t.Errorf("%v and %v should not overlap", netX, netY) + } +} + +func TestNetworkOverlaps(t *testing.T) { + //netY starts at same IP and ends within netX + AssertOverlap("172.16.0.1/24", "172.16.0.1/25", t) + //netY starts within netX and ends at same IP + AssertOverlap("172.16.0.1/24", "172.16.0.128/25", t) + //netY starts and ends within netX + AssertOverlap("172.16.0.1/24", "172.16.0.64/25", t) + //netY starts at same IP and ends outside of netX + AssertOverlap("172.16.0.1/24", "172.16.0.1/23", t) + //netY starts before and ends at same IP of netX + AssertOverlap("172.16.1.1/24", "172.16.0.1/23", t) + //netY starts before and ends outside of netX + AssertOverlap("172.16.1.1/24", "172.16.0.1/22", t) + //netY starts and ends before netX + AssertNoOverlap("172.16.1.1/25", "172.16.0.1/24", t) + //netX starts and ends before netY + AssertNoOverlap("172.16.1.1/25", "172.16.2.1/24", t) +} + +func TestNetworkRange(t *testing.T) { + // Simple class C test + _, network, _ := net.ParseCIDR("192.168.0.1/24") + first, last := NetworkRange(network) + if !first.Equal(net.ParseIP("192.168.0.0")) { + t.Error(first.String()) + } + if !last.Equal(net.ParseIP("192.168.0.255")) { + t.Error(last.String()) + } + if size := NetworkSize(network.Mask); size != 256 { + t.Error(size) + } + + // Class A test + _, network, _ = net.ParseCIDR("10.0.0.1/8") + first, last = NetworkRange(network) + if !first.Equal(net.ParseIP("10.0.0.0")) { + t.Error(first.String()) + } + if !last.Equal(net.ParseIP("10.255.255.255")) { + t.Error(last.String()) + } + if size := NetworkSize(network.Mask); size != 16777216 { + t.Error(size) + } + + // Class A, random IP address + _, network, _ = net.ParseCIDR("10.1.2.3/8") + first, last = NetworkRange(network) + if !first.Equal(net.ParseIP("10.0.0.0")) { + t.Error(first.String()) + } + if !last.Equal(net.ParseIP("10.255.255.255")) { + t.Error(last.String()) + } + + // 32bit mask + _, network, _ = net.ParseCIDR("10.1.2.3/32") + first, last = NetworkRange(network) + if !first.Equal(net.ParseIP("10.1.2.3")) { + t.Error(first.String()) + } + if !last.Equal(net.ParseIP("10.1.2.3")) { + t.Error(last.String()) + } + if size := NetworkSize(network.Mask); size != 1 { + t.Error(size) + } + + // 31bit mask + _, network, _ = net.ParseCIDR("10.1.2.3/31") + first, last = NetworkRange(network) + if !first.Equal(net.ParseIP("10.1.2.2")) { + t.Error(first.String()) + } + if !last.Equal(net.ParseIP("10.1.2.3")) { + t.Error(last.String()) + } + if size := NetworkSize(network.Mask); size != 2 { + t.Error(size) + } + + // 26bit mask + _, network, _ = net.ParseCIDR("10.1.2.3/26") + first, last = NetworkRange(network) + if !first.Equal(net.ParseIP("10.1.2.0")) { + t.Error(first.String()) + } + if !last.Equal(net.ParseIP("10.1.2.63")) { + t.Error(last.String()) + } + if size := NetworkSize(network.Mask); size != 64 { + t.Error(size) + } +} |