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package x509util
import (
"crypto/rand"
"crypto/rsa"
"crypto/x509"
"crypto/x509/pkix"
"encoding/pem"
"testing"
"github.com/pkg/errors"
"github.com/smallstep/assert"
)
func TestCSR_LoadCSRFromBytes(t *testing.T) {
tests := map[string]struct {
der func() ([]byte, error)
err error
}{
"propagate pem decode error": {
der: func() ([]byte, error) {
return nil, nil
},
err: errors.New("failed to decode PEM block containing CSR"),
},
"propagate parse error": {
der: func() ([]byte, error) {
return []byte("-----BEGIN PUBLIC KEY-----\nMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAyEU5ZhIhFn7v4bpMKlkz\ndmLCj9KfmqFWig29c6OzYoMUnbdodOmZ6RId/Gw5fnluH12eFxsItlXKDT4RPSm7\nm4D1sYgFmk88oo6z4XDuItDncoIg89jGK38OZ8A0gwEoy5JqukONGmAldzgzQyiq\nuzSNMeT1WO9zXCwOljcUio697M1kP/YN1Lp7n7YILVwdV8wQ2vyNKQK1M/5OZOFl\nlOqww4wsqLTDK0rfxp6LAVtczp1XdxbsnpdixrK38O+dHWe4IS5HhKLmmmdTfpFQ\nD3PIAXs/Naap/0+t0lsOplNPiF4BYyNBIqyyfm1o5ZQpGfmITKvDFZMBkQ2i2cou\nnQIDAQAB\n-----END PUBLIC KEY-----"), nil
},
err: errors.New("error parsing certificate request: asn1: structure error: tags don't match"),
},
"success": {
der: func() ([]byte, error) {
keypair, err := rsa.GenerateKey(rand.Reader, 4096)
if err != nil {
return nil, err
}
template := &x509.CertificateRequest{
Subject: pkix.Name{
Country: []string{"Foo"},
Organization: []string{"Smallstep"},
CommonName: "Bar",
},
SignatureAlgorithm: x509.SHA256WithRSA,
}
bytes, err := x509.CreateCertificateRequest(rand.Reader, template, keypair)
if err != nil {
return nil, err
}
return pem.EncodeToMemory(&pem.Block{
Type: "CSR",
Headers: map[string]string{},
Bytes: bytes,
}), nil
},
},
}
for name, test := range tests {
t.Run(name, func(t *testing.T) {
bytes, err := test.der()
assert.FatalError(t, err)
csr, err := LoadCSRFromBytes(bytes)
if err != nil {
if assert.NotNil(t, test.err) {
assert.HasPrefix(t, err.Error(), test.err.Error())
}
} else {
assert.Equals(t, csr.Subject.Country, []string{"Foo"})
assert.Equals(t, csr.Subject.Organization, []string{"Smallstep"})
assert.Equals(t, csr.Subject.CommonName, "Bar")
}
})
}
}
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