U.S. driver license for test fixtures
A driver license fixture that only covers one state passes CI and breaks in production the moment the first user from another state shows up; this page covers using a deterministic seed and batch export to cover all 51 formats at once.
The same seed integer always drives the same mulberry32 sequence, so CI can diff against a fixed value instead of regenerating and comparing field by field on every run.
Without an RFC 4180 aware parser, splitting on commas counts this field as extra columns, because the escaped double quote inside "5'-08"" " looks like a new field starting.
Z8109747 validates against California's regex but fails New Jersey's, and C37751904518850 does the opposite: each state needs its own regex, never a single national pattern.
No. Each state DMV issues its own licenses with its own number pattern; this tool models one canonical pattern per state.
Because createSeededRandomSource runs the mulberry32 algorithm, a deterministic PRNG: the seed goes through hashStringToSeed (an FNV-1a-style hash) and becomes a 32-bit integer, and that integer alone determines the entire following sequence, with no dependency on the clock, an IP address or any external state, so replaying the same seed on a different machine reproduces the identical fixture.
No: the 51 formats (50 states plus the District of Columbia) range from 7 to 14 digits beyond the letter portion, so a suite that only uses California (8 characters) never exercises the upper bound, like New Jersey's 15 characters; cover at least one short state, one medium one and the longest one.
formatProfilesAsCsv produces a full RFC 4180 CSV, a fixed 19-column header, comma as the separator and CRLF as the line break, with quotes escaped automatically in any field carrying a comma, a quote or a line break, like the feet-inches height label; import that straight into a batch test form without reformatting field by field.
It depends on the state: Hawaii always starts with the fixed letter H followed by 8 digits, so an H######## mask only works for that one state; New York uses 9 digits with no letter at all, so the same mask would reject every valid New York number. Test the form's mask against the specific state format it claims to support, not against one generic example.
Expected pattern for this state: 1 letter + 7 digits.
Generation and validation happen locally in the browser. Analytics receives only action, status and state, never the generated number, name, date of birth or address.