assemblyscript/tests/compiler/std/arraybuffer.ts at master · TypeScriptExperts/assemblyscript · GitHub

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import "allocator/arena";

var buffer = new ArrayBuffer(8);

assert(buffer.byteLength == 8);

var sliced = buffer.slice();

assert(sliced.byteLength == 8);
assert(sliced.data != buffer.data);
assert(sliced !== buffer);

sliced = buffer.slice(1);

assert(sliced.byteLength == 7);

sliced = buffer.slice(-1);

assert(sliced.byteLength == 1);

sliced = buffer.slice(1, 3);

assert(sliced.byteLength == 2);

sliced = buffer.slice(1, -1);

assert(sliced.byteLength == 6);

sliced = buffer.slice(-3, -1);

assert(sliced.byteLength == 2);

sliced = buffer.slice(-4, 42);

assert(sliced.byteLength == 4);

sliced = buffer.slice(42);

assert(sliced.byteLength == 0);
assert(sliced != null);

assert(!ArrayBuffer.isView(changetype<i32[]>(null)));
assert(!ArrayBuffer.isView(changetype<usize>(null)));
assert(!ArrayBuffer.isView(changetype<Uint8Array>(null)));
assert(!ArrayBuffer.isView(changetype<Int32Array>(null)));
assert(!ArrayBuffer.isView(changetype<DataView>(null)));

var arr8 = new Uint8Array(1);
assert(!ArrayBuffer.isView(<i32[]>[1, 2]));
assert(ArrayBuffer.isView(arr8));
assert(ArrayBuffer.isView(new Int32Array(1)));
assert(ArrayBuffer.isView(new DataView(arr8.buffer)));