| package resolvconf |
| |
| import ( |
| "bytes" |
| "io/ioutil" |
| "os" |
| "testing" |
| ) |
| |
| func TestGet(t *testing.T) { |
| resolvConfUtils, err := Get() |
| if err != nil { |
| t.Fatal(err) |
| } |
| resolvConfSystem, err := ioutil.ReadFile("/etc/resolv.conf") |
| if err != nil { |
| t.Fatal(err) |
| } |
| if string(resolvConfUtils) != string(resolvConfSystem) { |
| t.Fatalf("/etc/resolv.conf and GetResolvConf have different content.") |
| } |
| } |
| |
| func TestGetNameservers(t *testing.T) { |
| for resolv, result := range map[string][]string{` |
| nameserver 1.2.3.4 |
| nameserver 40.3.200.10 |
| search example.com`: {"1.2.3.4", "40.3.200.10"}, |
| `search example.com`: {}, |
| `nameserver 1.2.3.4 |
| search example.com |
| nameserver 4.30.20.100`: {"1.2.3.4", "4.30.20.100"}, |
| ``: {}, |
| ` nameserver 1.2.3.4 `: {"1.2.3.4"}, |
| `search example.com |
| nameserver 1.2.3.4 |
| #nameserver 4.3.2.1`: {"1.2.3.4"}, |
| `search example.com |
| nameserver 1.2.3.4 # not 4.3.2.1`: {"1.2.3.4"}, |
| } { |
| test := GetNameservers([]byte(resolv)) |
| if !strSlicesEqual(test, result) { |
| t.Fatalf("Wrong nameserver string {%s} should be %v. Input: %s", test, result, resolv) |
| } |
| } |
| } |
| |
| func TestGetNameserversAsCIDR(t *testing.T) { |
| for resolv, result := range map[string][]string{` |
| nameserver 1.2.3.4 |
| nameserver 40.3.200.10 |
| search example.com`: {"1.2.3.4/32", "40.3.200.10/32"}, |
| `search example.com`: {}, |
| `nameserver 1.2.3.4 |
| search example.com |
| nameserver 4.30.20.100`: {"1.2.3.4/32", "4.30.20.100/32"}, |
| ``: {}, |
| ` nameserver 1.2.3.4 `: {"1.2.3.4/32"}, |
| `search example.com |
| nameserver 1.2.3.4 |
| #nameserver 4.3.2.1`: {"1.2.3.4/32"}, |
| `search example.com |
| nameserver 1.2.3.4 # not 4.3.2.1`: {"1.2.3.4/32"}, |
| } { |
| test := GetNameserversAsCIDR([]byte(resolv)) |
| if !strSlicesEqual(test, result) { |
| t.Fatalf("Wrong nameserver string {%s} should be %v. Input: %s", test, result, resolv) |
| } |
| } |
| } |
| |
| func TestGetSearchDomains(t *testing.T) { |
| for resolv, result := range map[string][]string{ |
| `search example.com`: {"example.com"}, |
| `search example.com # ignored`: {"example.com"}, |
| ` search example.com `: {"example.com"}, |
| ` search example.com # ignored`: {"example.com"}, |
| `search foo.example.com example.com`: {"foo.example.com", "example.com"}, |
| ` search foo.example.com example.com `: {"foo.example.com", "example.com"}, |
| ` search foo.example.com example.com # ignored`: {"foo.example.com", "example.com"}, |
| ``: {}, |
| `# ignored`: {}, |
| `nameserver 1.2.3.4 |
| search foo.example.com example.com`: {"foo.example.com", "example.com"}, |
| `nameserver 1.2.3.4 |
| search dup1.example.com dup2.example.com |
| search foo.example.com example.com`: {"foo.example.com", "example.com"}, |
| `nameserver 1.2.3.4 |
| search foo.example.com example.com |
| nameserver 4.30.20.100`: {"foo.example.com", "example.com"}, |
| } { |
| test := GetSearchDomains([]byte(resolv)) |
| if !strSlicesEqual(test, result) { |
| t.Fatalf("Wrong search domain string {%s} should be %v. Input: %s", test, result, resolv) |
| } |
| } |
| } |
| |
| func strSlicesEqual(a, b []string) bool { |
| if len(a) != len(b) { |
| return false |
| } |
| |
| for i, v := range a { |
| if v != b[i] { |
| return false |
| } |
| } |
| |
| return true |
| } |
| |
| func TestBuild(t *testing.T) { |
| file, err := ioutil.TempFile("", "") |
| if err != nil { |
| t.Fatal(err) |
| } |
| defer os.Remove(file.Name()) |
| |
| err = Build(file.Name(), []string{"ns1", "ns2", "ns3"}, []string{"search1"}) |
| if err != nil { |
| t.Fatal(err) |
| } |
| |
| content, err := ioutil.ReadFile(file.Name()) |
| if err != nil { |
| t.Fatal(err) |
| } |
| |
| if expected := "nameserver ns1\nnameserver ns2\nnameserver ns3\nsearch search1\n"; !bytes.Contains(content, []byte(expected)) { |
| t.Fatalf("Expected to find '%s' got '%s'", expected, content) |
| } |
| } |
| |
| func TestBuildWithZeroLengthDomainSearch(t *testing.T) { |
| file, err := ioutil.TempFile("", "") |
| if err != nil { |
| t.Fatal(err) |
| } |
| defer os.Remove(file.Name()) |
| |
| err = Build(file.Name(), []string{"ns1", "ns2", "ns3"}, []string{"."}) |
| if err != nil { |
| t.Fatal(err) |
| } |
| |
| content, err := ioutil.ReadFile(file.Name()) |
| if err != nil { |
| t.Fatal(err) |
| } |
| |
| if expected := "nameserver ns1\nnameserver ns2\nnameserver ns3\n"; !bytes.Contains(content, []byte(expected)) { |
| t.Fatalf("Expected to find '%s' got '%s'", expected, content) |
| } |
| if notExpected := "search ."; bytes.Contains(content, []byte(notExpected)) { |
| t.Fatalf("Expected to not find '%s' got '%s'", notExpected, content) |
| } |
| } |
| |
| func TestFilterResolvDns(t *testing.T) { |
| ns0 := "nameserver 10.16.60.14\nnameserver 10.16.60.21\n" |
| |
| if result, _ := FilterResolvDns([]byte(ns0), false); result != nil { |
| if ns0 != string(result) { |
| t.Fatalf("Failed No Localhost: expected \n<%s> got \n<%s>", ns0, string(result)) |
| } |
| } |
| |
| ns1 := "nameserver 10.16.60.14\nnameserver 10.16.60.21\nnameserver 127.0.0.1\n" |
| if result, _ := FilterResolvDns([]byte(ns1), false); result != nil { |
| if ns0 != string(result) { |
| t.Fatalf("Failed Localhost: expected \n<%s> got \n<%s>", ns0, string(result)) |
| } |
| } |
| |
| ns1 = "nameserver 10.16.60.14\nnameserver 127.0.0.1\nnameserver 10.16.60.21\n" |
| if result, _ := FilterResolvDns([]byte(ns1), false); result != nil { |
| if ns0 != string(result) { |
| t.Fatalf("Failed Localhost: expected \n<%s> got \n<%s>", ns0, string(result)) |
| } |
| } |
| |
| ns1 = "nameserver 127.0.1.1\nnameserver 10.16.60.14\nnameserver 10.16.60.21\n" |
| if result, _ := FilterResolvDns([]byte(ns1), false); result != nil { |
| if ns0 != string(result) { |
| t.Fatalf("Failed Localhost: expected \n<%s> got \n<%s>", ns0, string(result)) |
| } |
| } |
| |
| ns1 = "nameserver ::1\nnameserver 10.16.60.14\nnameserver 127.0.2.1\nnameserver 10.16.60.21\n" |
| if result, _ := FilterResolvDns([]byte(ns1), false); result != nil { |
| if ns0 != string(result) { |
| t.Fatalf("Failed Localhost: expected \n<%s> got \n<%s>", ns0, string(result)) |
| } |
| } |
| |
| ns1 = "nameserver 10.16.60.14\nnameserver ::1\nnameserver 10.16.60.21\nnameserver ::1" |
| if result, _ := FilterResolvDns([]byte(ns1), false); result != nil { |
| if ns0 != string(result) { |
| t.Fatalf("Failed Localhost: expected \n<%s> got \n<%s>", ns0, string(result)) |
| } |
| } |
| |
| // with IPv6 disabled (false param), the IPv6 nameserver should be removed |
| ns1 = "nameserver 10.16.60.14\nnameserver 2002:dead:beef::1\nnameserver 10.16.60.21\nnameserver ::1" |
| if result, _ := FilterResolvDns([]byte(ns1), false); result != nil { |
| if ns0 != string(result) { |
| t.Fatalf("Failed Localhost+IPv6 off: expected \n<%s> got \n<%s>", ns0, string(result)) |
| } |
| } |
| |
| // with IPv6 enabled, the IPv6 nameserver should be preserved |
| ns0 = "nameserver 10.16.60.14\nnameserver 2002:dead:beef::1\nnameserver 10.16.60.21\n" |
| ns1 = "nameserver 10.16.60.14\nnameserver 2002:dead:beef::1\nnameserver 10.16.60.21\nnameserver ::1" |
| if result, _ := FilterResolvDns([]byte(ns1), true); result != nil { |
| if ns0 != string(result) { |
| t.Fatalf("Failed Localhost+IPv6 on: expected \n<%s> got \n<%s>", ns0, string(result)) |
| } |
| } |
| |
| // with IPv6 enabled, and no non-localhost servers, Google defaults (both IPv4+IPv6) should be added |
| ns0 = "\nnameserver 8.8.8.8\nnameserver 8.8.4.4\nnameserver 2001:4860:4860::8888\nnameserver 2001:4860:4860::8844" |
| ns1 = "nameserver 127.0.0.1\nnameserver ::1\nnameserver 127.0.2.1" |
| if result, _ := FilterResolvDns([]byte(ns1), true); result != nil { |
| if ns0 != string(result) { |
| t.Fatalf("Failed no Localhost+IPv6 enabled: expected \n<%s> got \n<%s>", ns0, string(result)) |
| } |
| } |
| |
| // with IPv6 disabled, and no non-localhost servers, Google defaults (only IPv4) should be added |
| ns0 = "\nnameserver 8.8.8.8\nnameserver 8.8.4.4" |
| ns1 = "nameserver 127.0.0.1\nnameserver ::1\nnameserver 127.0.2.1" |
| if result, _ := FilterResolvDns([]byte(ns1), false); result != nil { |
| if ns0 != string(result) { |
| t.Fatalf("Failed no Localhost+IPv6 enabled: expected \n<%s> got \n<%s>", ns0, string(result)) |
| } |
| } |
| } |