1 files changed, 30 insertions, 0 deletions
diff --git a/test/built-ins/TypedArray/prototype/lastIndexOf/BigInt/fromIndex-minus-zero.js b/test/built-ins/TypedArray/prototype/lastIndexOf/BigInt/fromIndex-minus-zero.js
new file mode 100644
index 000000000..bd42c0272
--- /dev/null
+++ b/test/built-ins/TypedArray/prototype/lastIndexOf/BigInt/fromIndex-minus-zero.js
@@ -0,0 +1,30 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-%typedarray%.prototype.lastindexof
+description: -0 fromIndex becomes 0
+info: |
+  22.2.3.17 %TypedArray%.prototype.lastIndexOf ( searchElement [ , fromIndex ] )
+
+  %TypedArray%.prototype.lastIndexOf is a distinct function that implements the
+  same algorithm as Array.prototype.lastIndexOf as defined in 22.1.3.15 except
+  that the this object's [[ArrayLength]] internal slot is accessed in place of
+  performing a [[Get]] of "length".
+
+  22.1.3.15 Array.prototype.lastIndexOf ( searchElement [ , fromIndex ] )
+
+  ...
+  5. If n ≥ 0, then
+    a. If n is -0, let k be +0; else let k be min(n, len - 1).
+  ...
+includes: [testBigIntTypedArray.js]
+features: [BigInt, TypedArray]
+---*/
+
+testWithBigIntTypedArrayConstructors(function(TA) {
+  var sample;
+
+  sample = new TA([42n, 43n]);
+  assert.sameValue(sample.lastIndexOf(42n, -0), 0, "-0 [0]");
+  assert.sameValue(sample.lastIndexOf(43n, -0), -1, "-0 [1]");
+});