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function arraysEqual(a, b) {
if (a.length !== b.length) {
return false;
}
for (let i = 0; i < b.length; i++) {
if (a[i] !== b[i]) {
return false;
}
}
return true;
}
function testCustomSection(moduleText, customSectionName, expectedBytes) {
let module = new WebAssembly.Module(wasmTextToBinary(moduleText));
let sections = WebAssembly.Module.customSections(module, customSectionName);
assertEq(sections.length, 1);
let section = sections[0];
let sectionView = new Uint8Array(section);
if (!arraysEqual(sectionView, expectedBytes)) {
let got = JSON.stringify(Array.from(sectionView));
let expected = JSON.stringify(Array.from(expectedBytes));
assertEq(true, false, `got: ${got}, expected: ${expected}`)
}
}
// Test an unknown custom section
testCustomSection(
`(module (@custom "unknown" "\\00\\01\\02\\03\\04"))`,
"unknown",
[0, 1, 2, 3, 4]);
// Test the name section
testCustomSection(
`(module (func $test))`,
"name",
[
/* subsection is functions */ 1,
/* subsection is 7 bytes */ 7,
/* name map has 1 entry */ 1,
/* first entry is index */ 0,
/* first entry string 4 bytes */ 4,
/* 't' */ 116,
/* 'e' */ 101,
/* 's' */ 115,
/* 't' */ 116]);