ratelimit_test.go
| 1 | package ratelimit |
| 2 | |
| 3 | import ( |
| 4 | "net/http" |
| 5 | "testing" |
| 6 | "time" |
| 7 | ) |
| 8 | |
| 9 | func TestAllowsUpToTheLimitThenBlocks(t *testing.T) { |
| 10 | l := New(3, time.Minute) |
| 11 | for i := range 3 { |
| 12 | if !l.Allow("1.1.1.1") { |
| 13 | t.Fatalf("call %d should be allowed", i) |
| 14 | } |
| 15 | } |
| 16 | if l.Allow("1.1.1.1") { |
| 17 | t.Fatal("call past the limit should be blocked") |
| 18 | } |
| 19 | } |
| 20 | |
| 21 | func TestBucketsArePerKey(t *testing.T) { |
| 22 | l := New(1, time.Minute) |
| 23 | if !l.Allow("3.3.3.1") || l.Allow("3.3.3.1") { |
| 24 | t.Fatal("first key not limited correctly") |
| 25 | } |
| 26 | if !l.Allow("3.3.3.2") { |
| 27 | t.Fatal("second key should have its own bucket") |
| 28 | } |
| 29 | } |
| 30 | |
| 31 | func TestLimitersAreIndependent(t *testing.T) { |
| 32 | login := New(1, time.Minute) |
| 33 | comment := New(1, time.Minute) |
| 34 | if !login.Allow("2.2.2.2") || login.Allow("2.2.2.2") { |
| 35 | t.Fatal("login limiter not limited correctly") |
| 36 | } |
| 37 | if !comment.Allow("2.2.2.2") { |
| 38 | t.Fatal("comment limiter should be independent") |
| 39 | } |
| 40 | } |
| 41 | |
| 42 | func TestWindowResets(t *testing.T) { |
| 43 | l := New(1, 20*time.Millisecond) |
| 44 | if !l.Allow("4.4.4.4") || l.Allow("4.4.4.4") { |
| 45 | t.Fatal("limit not enforced") |
| 46 | } |
| 47 | time.Sleep(40 * time.Millisecond) |
| 48 | if !l.Allow("4.4.4.4") { |
| 49 | t.Fatal("window should have reset") |
| 50 | } |
| 51 | } |
| 52 | |
| 53 | func TestCountingStaysCorrectWithManyKeys(t *testing.T) { |
| 54 | l := New(5, time.Minute) |
| 55 | for i := range 1200 { |
| 56 | l.Allow("5.5.5.5-" + string(rune('a'+i%26)) + string(rune('a'+i/26))) |
| 57 | } |
| 58 | for i := range 5 { |
| 59 | if !l.Allow("5.5.5.5") { |
| 60 | t.Fatalf("call %d should be allowed", i) |
| 61 | } |
| 62 | } |
| 63 | if l.Allow("5.5.5.5") { |
| 64 | t.Fatal("call past the limit should be blocked") |
| 65 | } |
| 66 | } |
| 67 | |
| 68 | func TestClientIP(t *testing.T) { |
| 69 | r, err := http.NewRequest("GET", "http://x/", nil) |
| 70 | if err != nil { |
| 71 | t.Fatal(err) |
| 72 | } |
| 73 | r.Header.Set("X-Forwarded-For", "9.9.9.9, 10.0.0.1") |
| 74 | r.RemoteAddr = "10.0.0.1:5555" |
| 75 | |
| 76 | if got := ClientIP(r, true); got != "9.9.9.9" { |
| 77 | t.Errorf("trusted proxy: got %q", got) |
| 78 | } |
| 79 | if got := ClientIP(r, false); got != "10.0.0.1" { |
| 80 | t.Errorf("untrusted: got %q", got) |
| 81 | } |
| 82 | } |
| 83 |