Add x509 tests and should be part of the build

Makefile

@@ -21,6 +21,8 @@ build-utils:
 	@godep go test -race -coverprofile=cover.out github.com/minio-io/minio/pkg/utils/crypto/sha512
 	@godep go test -race -coverprofile=cover.out github.com/minio-io/minio/pkg/utils/checksum/crc32c
 	@godep go test -race -coverprofile=cover.out github.com/minio-io/minio/pkg/utils/database/tiedot
+	@godep go test -race -coverprofile=cover.out github.com/minio-io/minio/pkg/utils/crypto/keys
+	@godep go test -race -coverprofile=cover.out github.com/minio-io/minio/pkg/utils/crypto/x509
 
 #build-os:
 #	@godep go test -race -coverprofile=cover.out github.com/minio-io/minio/pkg/os/scsi

pkg/utils/crypto/x509/generator_test.go

@@ -0,0 +1,27 @@
+package x509
+
+import (
+	"testing"
+	"time"
+
+	. "gopkg.in/check.v1"
+)
+
+func Test(t *testing.T) { TestingT(t) }
+
+type MySuite struct{}
+
+var _ = Suite(&MySuite{})
+
+func (s *MySuite) Testing(c *C) {
+	certObj := Certificates{}
+	params := X509Params{
+		Hostname:   "example.com",
+		IsCA:       false,
+		EcdsaCurve: "P224",
+		ValidFrom:  "Jan 1 15:04:05 2015",
+		ValidFor:   time.Duration(3600),
+	}
+	err := certObj.GenerateCertificates(params)
+	c.Assert(err, IsNil)
+}