1 files changed, 30 insertions, 0 deletions
diff --git a/js/src/tests/non262/BigInt/decimal.js b/js/src/tests/non262/BigInt/decimal.js
new file mode 100644
index 0000000000..f461307744
--- /dev/null
+++ b/js/src/tests/non262/BigInt/decimal.js
@@ -0,0 +1,30 @@
+// Any copyright is dedicated to the Public Domain.
+// https://creativecommons.org/licenses/publicdomain/
+
+// Check base-10 BigInt string conversion
+const decimalTests = [
+    [32n, -1n, 1n, "4294967295"],
+    [32n, -1n, -1n, "-4294967295"],
+    [32n, 0n, 1n, "4294967296"],
+    [32n, 0n, -1n, "-4294967296"],
+    [32n, 1n, 1n, "4294967297"],
+    [32n, 1n, -1n, "-4294967297"],
+    [64n, -1n, 1n, "18446744073709551615"],
+    [64n, -1n, -1n, "-18446744073709551615"],
+    [64n, 0n, 1n, "18446744073709551616"],
+    [64n, 0n, -1n, "-18446744073709551616"],
+    [64n, 1n, 1n, "18446744073709551617"],
+    [64n, 1n, -1n, "-18446744073709551617"],
+    [128n, -1n, 1n, "340282366920938463463374607431768211455"],
+    [128n, -1n, -1n, "-340282366920938463463374607431768211455"],
+    [128n, 0n, 1n, "340282366920938463463374607431768211456"],
+    [128n, 0n, -1n, "-340282366920938463463374607431768211456"],
+    [128n, 1n, 1n, "340282366920938463463374607431768211457"],
+    [128n, 1n, -1n, "-340282366920938463463374607431768211457"],
+];
+for (const [power, offset, sign, result] of decimalTests) {
+    assertEq(((2n**power+offset)*sign).toString(),
+             result);
+}
+
+reportCompare(true, true);