test: adds tests for password encodiing

pkg/util/encoding_test.go

@@ -7,7 +7,6 @@ import (
 )
 
 func TestEncoding(t *testing.T) {
-
 	Convey("When generating base64 header", t, func() {
 		result := GetBasicAuthHeader("grafana", "1234")
 
@@ -23,4 +22,8 @@ func TestEncoding(t *testing.T) {
 		So(password, ShouldEqual, "1234")
 	})
 
+	Convey("When encoding password", t, func() {
+		encodedPassword := EncodePassword("iamgod", "pepper")
+		So(encodedPassword, ShouldEqual, "e59c568621e57756495a468f47c74e07c911b037084dd464bb2ed72410970dc849cabd71b48c394faf08a5405dae53741ce9")
+	})
 }