INN +default pre

Author: Dmitry Ovsyanko

__tests__/isINN10.js

@@ -7,6 +7,14 @@ test ('basic', () => {
 	expect (isINN10 ('1111111117')).toBeUndefined ()
 	expect (isINN10 ('6449013711')).toBeUndefined ()
 
-	for (let i = 0; i < 1000; i ++) expect (isINN10 (randomINN10 ())).toBeUndefined ()
+	for (let i = 0; i < 1000; i ++) {
+
+		const value = randomINN10 ()
+
+		expect (value).not.toMatch (/^00/)
+		
+		expect (isINN10 (value)).toBeUndefined ()
+	
+	}
 
 })

__tests__/isINN12.js

@@ -6,6 +6,15 @@ test ('basic', () => {
 	expect (() => isINN12 ('635277570473')).toThrow ()
 
 	expect (isINN12 ('635277570478')).toBeUndefined ()
-	for (let i = 0; i < 1000; i ++) expect (isINN12 (randomINN12 ())).toBeUndefined ()
+
+	for (let i = 0; i < 1000; i ++) {
+
+		const value = randomINN12 ({pre: ['77', '78']})
+
+		expect (value).toMatch (/^7[78]/)
+
+		expect (isINN12 (value)).toBeUndefined ()
+
+	}
 
 })

index.js

@@ -34,7 +34,7 @@ module.exports = {
 		new INN_12_1 ().verify (str.slice (0, 11))
 		new INN_12_2 ().verify (str)
 	},
-	randomINN12: () => new INN_12_2 ().appendCheckSum (new INN_12_1 ().random ()),
+	randomINN12: opt => new INN_12_2 ().appendCheckSum (new INN_12_1 ().random (opt)),
 
 	isBankAcct     : (str, bic) => new BankAcct ().verify (str, bic),
 	randomBankAcct : (bic, opt) => new BankAcct ().random (bic, opt),

lib/INN.js

@@ -1,8 +1,26 @@
 const ScalarProduct = require ('./ScalarProduct')
 
+const PRE = []; for (let i = 1; i < 90; i ++) PRE.push (String (i).padStart (2, '0'))
+
 const COEF = new Uint8Array ([3, 7, 2, 4, 10, 3, 5, 9, 4, 6, 8])
 
-const inn = skip => class extends ScalarProduct {constructor () {super (COEF.slice (skip))}}
+const inn = skip => class extends ScalarProduct {
+	
+	constructor () {
+		
+		super (COEF.slice (skip))
+	
+	}
+
+	randomValue (options) {
+
+		if (!options.pre) options.pre = PRE
+
+		return super.randomValue (options)
+		
+	}
+
+}
 
 module.exports = {
 

package-lock.json

@@ -1,6 +1,6 @@
 {
   "name": "ru-codes",
-  "version": "1.0.5",
+  "version": "1.0.6",
   "description": "Проверка и генерация ИНН, КПП и т. п.",
   "main": "index.js",
   "files": ["/lib", "/badges"],