37 lines
958 B
Go
37 lines
958 B
Go
package pagination
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import (
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"errors"
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"testing"
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)
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func TestCursorRoundTripAndTamperProtection(t *testing.T) {
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codec, err := NewCodec([]byte("01234567890123456789012345678901"))
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if err != nil {
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t.Fatal(err)
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}
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encoded, err := codec.Encode("2026-08-23T12:00:00Z", "item-1")
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if err != nil {
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t.Fatal(err)
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}
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decoded, err := codec.Decode(encoded)
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if err != nil || decoded.ID != "item-1" {
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t.Fatalf("decoded = %#v, err = %v", decoded, err)
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}
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tampered := encoded[:len(encoded)-1] + "A"
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if _, err := codec.Decode(tampered); !errors.Is(err, ErrInvalidCursor) {
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t.Fatalf("tampered cursor error = %v", err)
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}
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}
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func TestParseLimit(t *testing.T) {
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if value, err := ParseLimit(""); err != nil || value != DefaultLimit {
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t.Fatalf("default limit = %d, err = %v", value, err)
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}
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for _, invalid := range []string{"0", "101", "abc", "-1"} {
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if _, err := ParseLimit(invalid); err == nil {
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t.Fatalf("expected %q to be rejected", invalid)
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}
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}
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}
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