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test/parallel/test-buffer-fakes.js

@@ -0,0 +1,54 @@
+'use strict';
+
+require('../common');
+const assert = require('assert');
+
+function FakeBuffer() { }
+Object.setPrototypeOf(FakeBuffer, Buffer);
+Object.setPrototypeOf(FakeBuffer.prototype, Buffer.prototype);
+
+const fb = new FakeBuffer();
+
+assert.throws(function() {
+  Buffer.from(fb);
+}, TypeError);
+
+assert.throws(function() {
+  +Buffer.prototype; // eslint-disable-line no-unused-expressions
+}, TypeError);
+
+assert.throws(function() {
+  Buffer.compare(fb, Buffer.alloc(0));
+}, TypeError);
+
+assert.throws(function() {
+  fb.write('foo');
+}, TypeError);
+
+assert.throws(function() {
+  Buffer.concat([fb, fb]);
+}, TypeError);
+
+assert.throws(function() {
+  fb.toString();
+}, TypeError);
+
+assert.throws(function() {
+  fb.equals(Buffer.alloc(0));
+}, TypeError);
+
+assert.throws(function() {
+  fb.indexOf(5);
+}, TypeError);
+
+assert.throws(function() {
+  fb.readFloatLE(0);
+}, TypeError);
+
+assert.throws(function() {
+  fb.writeFloatLE(0);
+}, TypeError);
+
+assert.throws(function() {
+  fb.fill(0);
+}, TypeError);