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// META: global=window,dedicatedworker,jsshell,shadowrealm
// META: script=/wasm/jsapi/wasm-module-builder.js
function assert_ArrayBuffer(buffer, expected) {
assert_equals(Object.getPrototypeOf(buffer), ArrayBuffer.prototype, "Prototype");
assert_true(Object.isExtensible(buffer), "isExtensible");
assert_array_equals(new Uint8Array(buffer), expected);
}
function assert_sections(sections, expected) {
assert_true(Array.isArray(sections), "Should be array");
assert_equals(Object.getPrototypeOf(sections), Array.prototype, "Prototype");
assert_true(Object.isExtensible(sections), "isExtensible");
assert_equals(sections.length, expected.length);
for (let i = 0; i < expected.length; ++i) {
assert_ArrayBuffer(sections[i], expected[i]);
}
}
let emptyModuleBinary;
setup(() => {
emptyModuleBinary = new WasmModuleBuilder().toBuffer();
});
test(() => {
assert_throws_js(TypeError, () => WebAssembly.Module.customSections());
const module = new WebAssembly.Module(emptyModuleBinary);
assert_throws_js(TypeError, () => WebAssembly.Module.customSections(module));
}, "Missing arguments");
test(() => {
const invalidArguments = [
undefined,
null,
true,
"",
Symbol(),
1,
{},
WebAssembly.Module,
WebAssembly.Module.prototype,
];
for (const argument of invalidArguments) {
assert_throws_js(TypeError, () => WebAssembly.Module.customSections(argument, ""),
`customSections(${format_value(argument)})`);
}
}, "Non-Module arguments");
test(() => {
const module = new WebAssembly.Module(emptyModuleBinary);
const fn = WebAssembly.Module.customSections;
const thisValues = [
undefined,
null,
true,
"",
Symbol(),
1,
{},
WebAssembly.Module,
WebAssembly.Module.prototype,
];
for (const thisValue of thisValues) {
assert_sections(fn.call(thisValue, module, ""), []);
}
}, "Branding");
test(() => {
const module = new WebAssembly.Module(emptyModuleBinary);
assert_sections(WebAssembly.Module.customSections(module, ""), []);
}, "Empty module");
test(() => {
const module = new WebAssembly.Module(emptyModuleBinary);
assert_not_equals(WebAssembly.Module.customSections(module, ""),
WebAssembly.Module.customSections(module, ""));
}, "Empty module: array caching");
test(() => {
const bytes1 = [87, 101, 98, 65, 115, 115, 101, 109, 98, 108, 121];
const bytes2 = [74, 83, 65, 80, 73];
const builder = new WasmModuleBuilder();
builder.addCustomSection("name", bytes1);
builder.addCustomSection("name", bytes2);
builder.addCustomSection("foo", bytes1);
const buffer = builder.toBuffer()
const module = new WebAssembly.Module(buffer);
assert_sections(WebAssembly.Module.customSections(module, "name"), [
bytes1,
bytes2,
])
assert_sections(WebAssembly.Module.customSections(module, "foo"), [
bytes1,
])
assert_sections(WebAssembly.Module.customSections(module, ""), [])
assert_sections(WebAssembly.Module.customSections(module, "\0"), [])
assert_sections(WebAssembly.Module.customSections(module, "name\0"), [])
assert_sections(WebAssembly.Module.customSections(module, "foo\0"), [])
}, "Custom sections");
test(() => {
const bytes = [87, 101, 98, 65, 115, 115, 101, 109, 98, 108, 121];
const name = "yee\uD801\uDC37eey"
const builder = new WasmModuleBuilder();
builder.addCustomSection(name, bytes);
const buffer = builder.toBuffer();
const module = new WebAssembly.Module(buffer);
assert_sections(WebAssembly.Module.customSections(module, name), [
bytes,
]);
assert_sections(WebAssembly.Module.customSections(module, "yee\uFFFDeey"), []);
assert_sections(WebAssembly.Module.customSections(module, "yee\uFFFD\uFFFDeey"), []);
}, "Custom sections with surrogate pairs");
test(() => {
const bytes = [87, 101, 98, 65, 115, 115, 101, 109, 98, 108, 121];
const builder = new WasmModuleBuilder();
builder.addCustomSection("na\uFFFDme", bytes);
const buffer = builder.toBuffer();
const module = new WebAssembly.Module(buffer);
assert_sections(WebAssembly.Module.customSections(module, "name"), []);
assert_sections(WebAssembly.Module.customSections(module, "na\uFFFDme"), [
bytes,
]);
assert_sections(WebAssembly.Module.customSections(module, "na\uDC01me"), []);
}, "Custom sections with U+FFFD");
test(() => {
const module = new WebAssembly.Module(emptyModuleBinary);
assert_sections(WebAssembly.Module.customSections(module, "", {}), []);
}, "Stray argument");
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