Add some tests that covers the helper function which list the package paths

Signed-off-by: Cosmin Cojocar <cosmin.cojocar@gmx.ch>

helpers_test.go

@@ -1,14 +1,56 @@
 package gosec_test
 
 import (
+	"io/ioutil"
+	"os"
+	"regexp"
+
 	. "github.com/onsi/ginkgo"
-	//. "github.com/onsi/gomega"
+	. "github.com/onsi/gomega"
+	"github.com/securego/gosec"
 )
 
 var _ = Describe("Helpers", func() {
-	Context("todo", func() {
+	Context("when listing pacakge paths", func() {
-		It("should fail", func() {
+		var dir string
-			Skip("Not implemented")
+		JustBeforeEach(func() {
+			var err error
+			dir, err = ioutil.TempDir("", "gosec")
+			Expect(err).ShouldNot(HaveOccurred())
+			_, err = ioutil.TempFile(dir, "test*.go")
+			Expect(err).ShouldNot(HaveOccurred())
+		})
+		JustAfterEach(func() {
+			err := os.RemoveAll(dir)
+			Expect(err).ShouldNot(HaveOccurred())
+		})
+		It("should return the root directory as package path", func() {
+			paths, err := gosec.PackagePaths(dir, nil)
+			Expect(err).ShouldNot(HaveOccurred())
+			Expect(paths).Should(Equal([]string{dir}))
+		})
+		It("should return the package package path", func() {
+			paths, err := gosec.PackagePaths(dir+"/...", nil)
+			Expect(err).ShouldNot(HaveOccurred())
+			Expect(paths).Should(Equal([]string{dir}))
+		})
+		It("should exclude folder", func() {
+			nested := dir + "/vendor"
+			err := os.Mkdir(nested, 0755)
+			Expect(err).ShouldNot(HaveOccurred())
+			_, err = os.Create(nested + "/test.go")
+			Expect(err).ShouldNot(HaveOccurred())
+			exclude, err := regexp.Compile(`([\\/])?vendor([\\/])?`)
+			Expect(err).ShouldNot(HaveOccurred())
+			paths, err := gosec.PackagePaths(dir+"/...", exclude)
+			Expect(err).ShouldNot(HaveOccurred())
+			Expect(paths).Should(Equal([]string{dir}))
+		})
+		It("should be empty when folder does not exist", func() {
+			nested := dir + "/test"
+			paths, err := gosec.PackagePaths(nested+"/...", nil)
+			Expect(err).ShouldNot(HaveOccurred())
+			Expect(paths).Should(BeEmpty())
 		})
 	})
 })