Add m-esr52 at 52.6.0

1 files changed, 12 insertions, 0 deletions

diff --git a/js/src/tests/ecma_6/TypedArray/from_surfaces.js b/js/src/tests/ecma_6/TypedArray/from_surfaces.js
new file mode 100644
index 000000000..ef1553637
--- /dev/null
+++ b/js/src/tests/ecma_6/TypedArray/from_surfaces.js
@@ -0,0 +1,12 @@
+for (var constructor of anyTypedArrayConstructors) {
+    // Check superficial features of %TypeArray%.from.
+    var desc = Object.getOwnPropertyDescriptor(constructor.__proto__, "from");
+    assertEq(desc.configurable, true);
+    assertEq(desc.enumerable, false);
+    assertEq(desc.writable, true);
+    assertEq(constructor.from.length, 1);
+    assertThrowsInstanceOf(() => new constructor.from(), TypeError);  // not a constructor
+}
+
+if (typeof reportCompare === "function")
+    reportCompare(true, true);