| 1 | // SPDX-License-Identifier: AGPL-3.0-or-later |
| 2 | |
| 3 | package keyset |
| 4 | |
| 5 | import ( |
| 6 | "errors" |
| 7 | "strings" |
| 8 | "testing" |
| 9 | ) |
| 10 | |
| 11 | func TestEncodeDecodeRoundtrip(t *testing.T) { |
| 12 | t.Parallel() |
| 13 | c := Cursor{Value: 1700000000, ID: 42} |
| 14 | s := Encode(c) |
| 15 | got, err := Decode(s) |
| 16 | if err != nil { |
| 17 | t.Fatalf("Decode: %v", err) |
| 18 | } |
| 19 | if got != c { |
| 20 | t.Errorf("roundtrip = %+v; want %+v", got, c) |
| 21 | } |
| 22 | } |
| 23 | |
| 24 | func TestDecodeRejectsMalformed(t *testing.T) { |
| 25 | t.Parallel() |
| 26 | cases := []string{"", "not-base64!", "abc"} |
| 27 | for _, in := range cases { |
| 28 | if _, err := Decode(in); !errors.Is(err, ErrInvalidCursor) { |
| 29 | t.Errorf("Decode(%q) err = %v; want ErrInvalidCursor", in, err) |
| 30 | } |
| 31 | } |
| 32 | } |
| 33 | |
| 34 | func TestSignVerifyRoundtrip(t *testing.T) { |
| 35 | t.Parallel() |
| 36 | key := []byte("super-secret-32-bytes-or-longer-") |
| 37 | c := Cursor{Value: 99, ID: 1} |
| 38 | s := Sign(c, key) |
| 39 | got, err := Verify(s, key) |
| 40 | if err != nil { |
| 41 | t.Fatalf("Verify: %v", err) |
| 42 | } |
| 43 | if got != c { |
| 44 | t.Errorf("verify roundtrip = %+v; want %+v", got, c) |
| 45 | } |
| 46 | } |
| 47 | |
| 48 | func TestVerifyRejectsTamper(t *testing.T) { |
| 49 | t.Parallel() |
| 50 | key := []byte("k") |
| 51 | c := Cursor{Value: 1, ID: 2} |
| 52 | s := Sign(c, key) |
| 53 | // Flip a body byte at the start. |
| 54 | bad := strings.Replace(s, s[:4], "AAAA", 1) |
| 55 | if _, err := Verify(bad, key); !errors.Is(err, ErrInvalidCursor) { |
| 56 | t.Errorf("tampered cursor accepted; want ErrInvalidCursor") |
| 57 | } |
| 58 | } |
| 59 | |
| 60 | func TestVerifyRejectsWrongKey(t *testing.T) { |
| 61 | t.Parallel() |
| 62 | c := Cursor{Value: 1, ID: 2} |
| 63 | s := Sign(c, []byte("alice")) |
| 64 | if _, err := Verify(s, []byte("bob")); !errors.Is(err, ErrInvalidCursor) { |
| 65 | t.Errorf("wrong key accepted; want ErrInvalidCursor") |
| 66 | } |
| 67 | } |
| 68 | |
| 69 | func TestSignPanicsOnEmptyKey(t *testing.T) { |
| 70 | t.Parallel() |
| 71 | defer func() { |
| 72 | if r := recover(); r == nil { |
| 73 | t.Errorf("Sign with empty key did not panic") |
| 74 | } |
| 75 | }() |
| 76 | Sign(Cursor{}, nil) |
| 77 | } |
| 78 |