Add b64 type test

Author: catherinetcai

pkg/utils/base64_test.go

@@ -0,0 +1,48 @@
+package utils
+
+import (
+	"fmt"
+	"testing"
+
+	"github.com/goccy/go-yaml"
+	"github.com/stretchr/testify/assert"
+)
+
+func TestBase64String(t *testing.T) {
+	type testStruct struct {
+		Password Base64String `yaml:"password"`
+	}
+
+	tcs := []struct {
+		name          string
+		input         []byte
+		shouldError   bool
+		errorContains string
+	}{
+		{
+			name: "happy path",
+			// b64: hello world
+			input: []byte(`password: "aGVsbG8gd29ybGQ="`),
+		},
+		{
+			name:          "invalid base64 encoding",
+			input:         []byte(`password: "notbase64"`),
+			shouldError:   true,
+			errorContains: "failed to base64 decode",
+		},
+	}
+
+	for _, tc := range tcs {
+		t.Run(tc.name, func(tt *testing.T) {
+			var ts testStruct
+			err := yaml.Unmarshal(tc.input, &ts)
+			fmt.Printf("TS: %+v\n", ts)
+			if tc.shouldError {
+				assert.ErrorContains(tt, err, tc.errorContains)
+			} else {
+				assert.NoError(tt, err)
+				assert.NotEmpty(tt, ts.Password)
+			}
+		})
+	}
+}