63 lines
3.6 KiB
Go
63 lines
3.6 KiB
Go
package fejkdata
|
|
|
|
import (
|
|
"os"
|
|
"path/filepath"
|
|
"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"]`,
|
|
})
|
|
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"},
|
|
"classes": {"49-74-VY-gj", "38-68-RP-xo", "47-68-IB-hs", "91-89-LP-gk"},
|
|
"escapes": {"01Aa#!", "01Aa#!", "01Aa#!", "01Aa#!"},
|
|
"funcs": {"0016a2 33 0.649 k4Kwj 1", "a00c07 84 0.175 6UjGv 2", "f70eb8 12 0.390 p5p6g 3", "9048a3 90 0.531 I3Aqv 4"},
|
|
"nested": {"i-73", "i-23", "i-67", "i-85"},
|
|
"paths": {"ab", "ab", "AB", "AB"},
|
|
"paths.p.a": {"A", "a", "a", "A"},
|
|
"ref": {"see A", "see A", "see A", "see B"},
|
|
"refpath": {"Solna in Stockholms län", "Malmö in Skåne län", "Stockholm in Stockholms län", "Malmö in Skåne län"},
|
|
"region.municipality[0184].name": {"Solna", "Solna", "Solna", "Solna"},
|
|
"region[12].municipality.name": {"Malmö", "Malmö", "Lund", "Malmö"},
|
|
"repeat": {"z,y,z,y", "z,z,y,y", "z,z,x,z", "x,z,y,y"},
|
|
"sums": {"90123456789012348 1234567890124 123456780", "90123456789012348 1234567890124 123456780", "90123456789012348 1234567890124 123456780", "90123456789012348 1234567890124 123456780"},
|
|
"weights": {"big", "big", "big", "big"},
|
|
}
|
|
for path := range want {
|
|
f := newGenerator(t, dir, WithSeed(42))
|
|
for i, expect := range want[path] {
|
|
if got := fake(t, f, path); got != expect {
|
|
t.Errorf("%s draw %d = %q, want %q", path, i, got, expect)
|
|
}
|
|
}
|
|
}
|
|
}
|