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test/pummel/test-blob-slice-with-large-size.js

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+'use strict';
+
+// This tests that Blob.prototype.slice() works correctly when the size of the
+// Blob is outside the range of 32-bit signed integers.
+const common = require('../common');
+
+// Buffer with size > INT32_MAX
+common.skipIf32Bits();
+
+const assert = require('assert');
+
+const size = 2 ** 31;
+
+try {
+  const buf = Buffer.allocUnsafe(size);
+  const blob = new Blob([buf]);
+  const slicedBlob = blob.slice(size - 1, size);
+  assert.strictEqual(slicedBlob.size, 1);
+} catch (e) {
+  if (e.code === 'ERR_MEMORY_ALLOCATION_FAILED') {
+    common.skip('insufficient space for Buffer.allocUnsafe');
+  }
+  if (/Array buffer allocation failed/.test(e.message)) {
+    common.skip('insufficient space for Blob.prototype.slice()');
+  }
+  throw e;
+}