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Write the seeded pin's data through writeFiles

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Lilleman auf Larv
2026-09-30 20:14:52 +02:00
committed by Lillem4n
parent 270ba93fbe
commit 220129584e
1 changed files with 18 additions and 28 deletions
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format_stability_test.go
+18 -28
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@@ -1,39 +1,29 @@
package fejkdata
import (
"os"
"path/filepath"
"testing"
)
import "testing"
// TestSeededOutputIsStable pins the exact bytes a seeded generator emits for each
// piece of the token grammar, so a change to how a format is scanned or rendered
// cannot quietly shift the rng stream that reproducibility depends on.
func TestSeededOutputIsStable(t *testing.T) {
dir := writeData(t, map[string]string{
"alt": `{"format":"{a|b}","a":"A","b":"B"}`,
"calc": `{"format":"{net} x {qty} = {calc(net * qty, 2)}","net":["19.99","5.00","100.00"],"qty":["2","3","7"]}`,
"classes": `"{digits(2)}-{int(1,9)}{int(1,9)}-{upper(2)}-{lower(2)}"`,
"escapes": `{"format":"01Aa#{x}","x":"!"}`,
"funcs": `"{hex(6)} {int(10,99)} {float(0,1,3)} {nanoid(5)} {seq()}"`,
"municipality": `{"format":"{name}","rows":"municipality.tsv","key":"code","name":"name","parent":"region"}`,
"nested": `{"format":"{outer}","outer":{"format":"{inner}-{digits(2)}","inner":"i"}}`,
"paths": `{"format":"{p.a}{p.b}","p":[{"format":"x","a":"1","b":"2"},{"format":"y","a":"A","b":"B"},{"format":"z","a":"a","b":"b"}]}`,
"ref": `"see {/alt}"`,
"refpath": `"{/region.municipality.name} in {/region.name}"`,
"region": `{"format":"{name}","rows":"region.tsv","key":"code","name":"name","weight":"people"}`,
"repeat": `{"format":"{w}","repeat":4,"separator":",","w":["x","y","z"]}`,
"sums": `{"format":"9{d}{luhn()} {e}{ean()} {m}{mod11()}","d":"012345678901234","e":"123456789012","m":"12345678"}`,
"weights": `[{"format":"big","weight":9},"tiny"]`,
dir := writeFiles(t, map[string]string{
"alt.json": `{"format":"{a|b}","a":"A","b":"B"}`,
"calc.json": `{"format":"{net} x {qty} = {calc(net * qty, 2)}","net":["19.99","5.00","100.00"],"qty":["2","3","7"]}`,
"classes.json": `"{digits(2)}-{int(1,9)}{int(1,9)}-{upper(2)}-{lower(2)}"`,
"escapes.json": `{"format":"01Aa#{x}","x":"!"}`,
"funcs.json": `"{hex(6)} {int(10,99)} {float(0,1,3)} {nanoid(5)} {seq()}"`,
"municipality.json": `{"format":"{name}","rows":"municipality.tsv","key":"code","name":"name","parent":"region"}`,
"municipality.tsv": "code\tname\tregion\n0180\tStockholm\t01\n0184\tSolna\t01\n1280\tMalmö\t12\n1281\tLund\t12\n",
"nested.json": `{"format":"{outer}","outer":{"format":"{inner}-{digits(2)}","inner":"i"}}`,
"paths.json": `{"format":"{p.a}{p.b}","p":[{"format":"x","a":"1","b":"2"},{"format":"y","a":"A","b":"B"},{"format":"z","a":"a","b":"b"}]}`,
"ref.json": `"see {/alt}"`,
"refpath.json": `"{/region.municipality.name} in {/region.name}"`,
"region.json": `{"format":"{name}","rows":"region.tsv","key":"code","name":"name","weight":"people"}`,
"region.tsv": "code\tname\tpeople\n01\tStockholms län\t3\n12\tSkåne län\t1\n",
"repeat.json": `{"format":"{w}","repeat":4,"separator":",","w":["x","y","z"]}`,
"sums.json": `{"format":"9{d}{luhn()} {e}{ean()} {m}{mod11()}","d":"012345678901234","e":"123456789012","m":"12345678"}`,
"weights.json": `[{"format":"big","weight":9},"tiny"]`,
})
for name, rows := range map[string]string{
"municipality": "code\tname\tregion\n0180\tStockholm\t01\n0184\tSolna\t01\n1280\tMalmö\t12\n1281\tLund\t12\n",
"region": "code\tname\tpeople\n01\tStockholms län\t3\n12\tSkåne län\t1\n",
} {
if err := os.WriteFile(filepath.Join(dir, name+".tsv"), []byte(rows), 0o644); err != nil {
t.Fatal(err)
}
}
want := map[string][]string{
"alt": {"A", "A", "B", "A"},
"calc": {"100.00 x 3 = 300.00", "100.00 x 3 = 300.00", "100.00 x 7 = 700.00", "5.00 x 3 = 15.00"},