| function shouldBe(actual, expected) { |
| if (actual !== expected) |
| throw new Error('bad value: ' + actual); |
| } |
| |
| function shouldThrow(func, errorMessage) { |
| var errorThrown = false; |
| var error = null; |
| try { |
| func(); |
| } catch (e) { |
| errorThrown = true; |
| error = e; |
| } |
| if (!errorThrown) |
| throw new Error('not thrown'); |
| if (String(error) !== errorMessage) |
| throw new Error(`bad error: ${String(error)}`); |
| } |
| |
| let int32min = -0x7fffffffn - 1n; |
| shouldBe(0n >> int32min, 0n); |
| shouldBe(0n >> (int32min + 1n), 0n); |
| shouldBe(0n << int32min, 0n); |
| shouldBe(0n << (int32min + 1n), 0n); |
| shouldBe(1n << int32min, 0n); |
| shouldBe(1n << (int32min + 1n), 0n); |
| shouldBe(-1n << int32min, -1n); |
| shouldBe(-1n << (int32min + 1n), -1n); |
| shouldBe(0x7fffffffn << int32min, 0n); |
| shouldBe(0x7fffffffn << (int32min + 1n), 0n); |
| shouldBe(0x7fffffffffffn << int32min, 0n); |
| shouldBe(0x7fffffffffffn << (int32min + 1n), 0n); |
| shouldBe(-0x7fffffffn << int32min, -1n); |
| shouldBe(-0x7fffffffn << (int32min + 1n), -1n); |
| shouldBe(-0x7fffffffffffn << int32min, -1n); |
| shouldBe(-0x7fffffffffffn << (int32min + 1n), -1n); |
| shouldThrow(() => { |
| 1n >> int32min; |
| }, `RangeError: Out of memory: BigInt generated from this operation is too big`); |
| shouldThrow(() => { |
| -1n >> int32min; |
| }, `RangeError: Out of memory: BigInt generated from this operation is too big`); |
| shouldThrow(() => { |
| 0x7fffffffn >> int32min; |
| }, `RangeError: Out of memory: BigInt generated from this operation is too big`); |
| shouldThrow(() => { |
| (-0x7fffffffn - 1n) >> int32min; |
| }, `RangeError: Out of memory: BigInt generated from this operation is too big`); |