From 36d22d82aa202bb199967e9512281e9a53db42c9 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 21:33:14 +0200 Subject: Adding upstream version 115.7.0esr. Signed-off-by: Daniel Baumann --- js/src/jit-test/tests/sharedbuf/subtypes.js | 52 +++++++++++++++++++++++++++++ 1 file changed, 52 insertions(+) create mode 100644 js/src/jit-test/tests/sharedbuf/subtypes.js (limited to 'js/src/jit-test/tests/sharedbuf/subtypes.js') diff --git a/js/src/jit-test/tests/sharedbuf/subtypes.js b/js/src/jit-test/tests/sharedbuf/subtypes.js new file mode 100644 index 0000000000..cf3adde3ce --- /dev/null +++ b/js/src/jit-test/tests/sharedbuf/subtypes.js @@ -0,0 +1,52 @@ +// |jit-test| skip-if: !this.SharedArrayBuffer + +// Test cases for subclasses of SharedArrayBuffer. + +load(libdir + "asserts.js"); + +// Basic subclassing. + +class MySharedArrayBuffer1 extends SharedArrayBuffer { + constructor(n) { super(n) } +} + +let mv1 = new MySharedArrayBuffer1(1024); +assertEq(mv1 instanceof SharedArrayBuffer, true); +assertEq(mv1 instanceof MySharedArrayBuffer1, true); +assertEq(mv1.byteLength, 1024); + +// Can construct views on the subclasses and read/write elements. + +let mva1 = new Int8Array(mv1); +assertEq(mva1.length, mv1.byteLength); +assertEq(mva1.buffer, mv1); + +for ( let i=1 ; i < mva1.length ; i++ ) + mva1[i] = i; + +for ( let i=1 ; i < mva1.length ; i++ ) + assertEq(mva1[i], (i << 24) >> 24); + +// Passing modified arguments to superclass to get a different length. + +class MySharedArrayBuffer2 extends SharedArrayBuffer { + constructor(n) { super(n-1) } +} + +let mv2 = new MySharedArrayBuffer2(10); +assertEq(mv2 instanceof SharedArrayBuffer, true); +assertEq(mv2 instanceof MySharedArrayBuffer2, true); +assertEq(mv2.byteLength, 9); + +// Returning a different object altogether. + +class MySharedArrayBuffer3 extends SharedArrayBuffer { + constructor(n) { + return new Array(n); + } +} + +let mv3 = new MySharedArrayBuffer3(10); +assertEq(mv3 instanceof Array, true); +assertEq(mv3 instanceof MySharedArrayBuffer3, false); +assertEq(mv3.length, 10); -- cgit v1.2.3