pad_utils: Custom logger interface for warnDeprecated

src/tests/backend/specs/pad_utils.js

@@ -0,0 +1,26 @@
+'use strict';
+
+const assert = require('assert').strict;
+const {padutils} = require('../../../static/js/pad_utils');
+
+describe(__filename, function () {
+  describe('warnDeprecated', function () {
+    const {warnDeprecated} = padutils;
+    const backups = {};
+
+    before(async function () {
+      backups.logger = warnDeprecated.logger;
+    });
+
+    afterEach(async function () {
+      warnDeprecated.logger = backups.logger;
+    });
+
+    it('includes the stack', async function () {
+      let got;
+      warnDeprecated.logger = {warn: (stack) => got = stack};
+      warnDeprecated();
+      assert(got.includes(__filename));
+    });
+  });
+});