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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,42 @@ | ||
| // Package utils contains utility functions for the application | ||
| package utils | ||
|
|
||
| import ( | ||
| "math/rand" | ||
| "regexp" | ||
| "time" | ||
|
|
||
| "github.com/oklog/ulid/v2" | ||
| ) | ||
|
|
||
| // IsULID checks if the given string is a valid ULID | ||
| // ULID pattern: | ||
| // | ||
| // 01AN4Z07BY 79KA1307SR9X4MV3 | ||
| // |----------| |----------------| | ||
| // Timestamp Randomness | ||
| // | ||
| // 10 characters 16 characters | ||
| // Crockford's Base32 is used (excludes I, L, O, and U to avoid confusion and abuse) | ||
| func isULID(s string) bool { | ||
|
|
||
| ulidRegex := `^[0123456789ABCDEFGHJKMNPQRSTVWXYZ]{26}$` | ||
| matched, _ := regexp.MatchString(ulidRegex, s) | ||
| return matched | ||
| } | ||
|
|
||
| // ValidID checks if the given id is valid | ||
| func ValidID(id string) bool { | ||
| _, err := ulid.Parse(id) | ||
|
|
||
| return err == nil && isULID(id) | ||
| } | ||
|
|
||
| // GenerateID generates a new universal ID | ||
| func GenerateID() string { | ||
| ts := ulid.Timestamp(time.Now()) | ||
| source := rand.NewSource(time.Now().UnixNano()) | ||
| entropy := rand.New(source) | ||
|
|
||
| return ulid.MustNew(ts, entropy).String() | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,46 @@ | ||
| package utils | ||
|
|
||
| import ( | ||
| "strings" | ||
| "testing" | ||
| ) | ||
|
|
||
| // TestValidID tests the ValidID function with both valid and invalid inputs. | ||
| func TestValidID(t *testing.T) { | ||
| // Generate a valid ULID for testing. | ||
| validULID := GenerateID() | ||
|
|
||
| tests := []struct { | ||
| id string | ||
| expected bool | ||
| }{ | ||
| {validULID, true}, | ||
| {"0", false}, | ||
| {"invalidulid", false}, | ||
| {"invalidulid", false}, | ||
| {"01B4E6BXY0PRJ5G420D25MWQY!", false}, | ||
| } | ||
|
|
||
| for _, tt := range tests { | ||
| t.Run(tt.id, func(t *testing.T) { | ||
| if got := ValidID(tt.id); got != tt.expected { | ||
| t.Errorf("ValidID(%s) = %v; want %v", tt.id, got, tt.expected) | ||
| } | ||
| }) | ||
| } | ||
| } | ||
|
|
||
| func TestGenerateID(t *testing.T) { | ||
| id := GenerateID() | ||
| if !ValidID(id) { | ||
| t.Errorf("Generated ID is not a valid ULID: %s", id) | ||
| } | ||
|
|
||
| if len(id) != 26 { | ||
| t.Errorf("Generated ID does not have the correct length: got %v want %v", len(id), 26) | ||
| } | ||
|
|
||
| if strings.ContainsAny(id, "ilou") { | ||
| t.Errorf("Generated ID contains invalid characters: %s", id) | ||
| } | ||
| } |