test: fix test for inherited properties on vm

The known issue is fixed with nodejs#16293. The text needs to call `Object.hasOwnProperty(this)` instead of `this.hasOwnProperty()`, otherwise `this` is from the wrong context is used. Add a second test case taken verbatim from issue nodejs#5350 PR-URL: nodejs#16411 Fixes: nodejs#5350 Ref: nodejs#16293 Reviewed-By: Michaël Zasso <[email protected]> Reviewed-By: Colin Ihrig <[email protected]>
fhinkel · Oct 25, 2017 · ed116dc · ed116dc
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Showing 2 changed files with 38 additions and 20 deletions.
diff --git a/test/known_issues/test-vm-inherited_properties.js b/test/known_issues/test-vm-inherited_properties.js
diff --git a/test/parallel/test-vm-inherited_properties.js b/test/parallel/test-vm-inherited_properties.js
@@ -0,0 +1,38 @@
+'use strict';
+
+require('../common');
+
+const vm = require('vm');
+const assert = require('assert');
+
+let base = {
+  propBase: 1
+};
+
+let sandbox = Object.create(base, {
+  propSandbox: { value: 3 }
+});
+
+const context = vm.createContext(sandbox);
+
+let result = vm.runInContext('Object.hasOwnProperty(this, "propBase");',
+                             context);
+
+assert.strictEqual(result, false);
+
+// Ref: https://github.com/nodejs/node/issues/5350
+base = Object.create(null);
+base.x = 1;
+base.y = 2;
+
+sandbox = Object.create(base);
+sandbox.z = 3;
+
+assert.deepStrictEqual(Object.keys(sandbox), ['z']);
+
+const code = 'x = 0; z = 4;';
+result = vm.runInNewContext(code, sandbox);
+assert.strictEqual(result, 4);
+
+// Check that y is not an own property.
+assert.deepStrictEqual(Object.keys(sandbox), ['z', 'x']);