Refactor generate cnpj

README.md

@@ -7,6 +7,52 @@
 [![Coverage Status](https://coveralls.io/repos/github/martinusso/go-docs/badge.svg?branch=master)](https://coveralls.io/github/martinusso/go-docs?branch=master)
 [![GoDoc](https://godoc.org/github.com/martinusso/go-docs?status.svg)](https://godoc.org/github.com/martinusso/go-docs)
 
+## Usage
+
+### CPF
+
+`import "github.com/martinusso/go-docs/cpf"`
+
+Valid return a boolean
+
+```
+valid := cpf.Valid("08507460003")
+```
+
+AssertValid return a boolean and the error if any
+
+```
+valid, err := cpf.AssertValid("08507460003")
+```
+
+Generate return a random valid CPF
+
+```
+doc := cpf.Generate()
+```
+
+### CNPJ
+
+`import "github.com/martinusso/go-docs/cnpj"`
+
+Valid return a boolean
+
+```
+valid := cnpj.Valid("34700442000162")
+```
+
+AssertValid return a boolean and the error if any
+
+```
+valid, err := cnpj.AssertValid("34700442000162")
+```
+
+Generate return a random valid CNPJ
+
+```
+doc := cnpj.Generate()
+```
+
 ## License
 
 This software is open source, licensed under the The MIT License (MIT). See [LICENSE](https://github.com/martinusso/go-docs/blob/master/LICENSE) for details.

cnpj/cnpj.go

@@ -49,6 +49,14 @@ func Generate() string {
 
 	cnpj := make([]int, 12)
 	for i := 0; i < 12; i++ {
+		if i >= 8 && i <= 10 {
+			cnpj[i] = 0
+			continue
+		}
+		if i == 11 {
+			cnpj[i] = 1
+			continue
+		}
 		cnpj[i] = rand.Intn(9)
 	}
 	checkDigit1 := computeCheckDigit(cnpj)