1 files changed, 52 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Array/prototype/includes/using-fromindex.js b/js/src/tests/test262/built-ins/Array/prototype/includes/using-fromindex.js
new file mode 100644
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+++ b/js/src/tests/test262/built-ins/Array/prototype/includes/using-fromindex.js
@@ -0,0 +1,52 @@
+// 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-array.prototype.includes
+description: Searches using fromIndex
+info: |
+  22.1.3.11 Array.prototype.includes ( searchElement [ , fromIndex ] )
+
+  ...
+  5. If n ≥ 0, then
+    a. Let k be n.
+  6. Else n < 0,
+    a. Let k be len + n.
+    b. If k < 0, let k be 0.
+  7. Repeat, while k < len
+    a. Let elementK be the result of ? Get(O, ! ToString(k)).
+    b. If SameValueZero(searchElement, elementK) is true, return true.
+    c. Increase k by 1.
+  ...
+features: [Array.prototype.includes]
+---*/
+
+var sample = ["a", "b", "c"];
+assert.sameValue(sample.includes("a", 0), true, "includes('a', 0)");
+assert.sameValue(sample.includes("a", 1), false, "includes('a', 1)");
+assert.sameValue(sample.includes("a", 2), false, "includes('a', 2)");
+
+assert.sameValue(sample.includes("b", 0), true, "includes('b', 0)");
+assert.sameValue(sample.includes("b", 1), true, "includes('b', 1)");
+assert.sameValue(sample.includes("b", 2), false, "includes('b', 2)");
+
+assert.sameValue(sample.includes("c", 0), true, "includes('c', 0)");
+assert.sameValue(sample.includes("c", 1), true, "includes('c', 1)");
+assert.sameValue(sample.includes("c", 2), true, "includes('c', 2)");
+
+assert.sameValue(sample.includes("a", -1), false, "includes('a', -1)");
+assert.sameValue(sample.includes("a", -2), false, "includes('a', -2)");
+assert.sameValue(sample.includes("a", -3), true, "includes('a', -3)");
+assert.sameValue(sample.includes("a", -4), true, "includes('a', -4)");
+
+assert.sameValue(sample.includes("b", -1), false, "includes('b', -1)");
+assert.sameValue(sample.includes("b", -2), true, "includes('b', -2)");
+assert.sameValue(sample.includes("b", -3), true, "includes('b', -3)");
+assert.sameValue(sample.includes("b", -4), true, "includes('b', -4)");
+
+assert.sameValue(sample.includes("c", -1), true, "includes('c', -1)");
+assert.sameValue(sample.includes("c", -2), true, "includes('c', -2)");
+assert.sameValue(sample.includes("c", -3), true, "includes('c', -3)");
+assert.sameValue(sample.includes("c", -4), true, "includes('c', -4)");
+
+reportCompare(0, 0);