Redact credentials before logging

Co-authored-by: Tom Moulard <tom.moulard@traefik.io>
Co-authored-by: Mathieu Lonjaret <mathieu.lonjaret@gmail.com>

pkg/redactor/redactor_doOnJSON_test.go

@@ -0,0 +1,67 @@
+package redactor
+
+import (
+	"os"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+func Test_doOnJSON(t *testing.T) {
+	baseConfiguration, err := os.ReadFile("./testdata/example.json")
+	require.NoError(t, err)
+
+	anomConfiguration := doOnJSON(string(baseConfiguration))
+
+	expectedConfiguration, err := os.ReadFile("./testdata/expected.json")
+	require.NoError(t, err)
+
+	assert.JSONEq(t, string(expectedConfiguration), anomConfiguration)
+}
+
+func Test_doOnJSON_simple(t *testing.T) {
+	testCases := []struct {
+		name           string
+		input          string
+		expectedOutput string
+	}{
+		{
+			name: "email",
+			input: `{
+				"email1": "goo@example.com",
+				"email2": "foo.bargoo@example.com",
+				"email3": "foo.bargoo@example.com.us"
+			}`,
+			expectedOutput: `{
+				"email1": "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx",
+				"email2": "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx",
+				"email3": "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
+			}`,
+		},
+		{
+			name: "url",
+			input: `{
+				"URL": "foo domain.com foo",
+				"URL": "foo sub.domain.com foo",
+				"URL": "foo sub.sub.domain.com foo",
+				"URL": "foo sub.sub.sub.domain.com.us foo"
+			}`,
+			expectedOutput: `{
+				"URL": "foo xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx foo",
+				"URL": "foo xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx foo",
+				"URL": "foo xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx foo",
+				"URL": "foo xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx foo"
+			}`,
+		},
+	}
+
+	for _, test := range testCases {
+		test := test
+		t.Run(test.name, func(t *testing.T) {
+			t.Parallel()
+			output := doOnJSON(test.input)
+			assert.Equal(t, test.expectedOutput, output)
+		})
+	}
+}