Checkpoint web parity through Chromium input tasks

web/tests/unit/ply-negative.test.mjs

@@ -0,0 +1,29 @@
+import assert from "node:assert/strict";
+import fs from "node:fs";
+import os from "node:os";
+import path from "node:path";
+import { pathToFileURL } from "node:url";
+import test from "node:test";
+import ts from "typescript";
+
+const root = path.resolve(import.meta.dirname, "../../..");
+const temporary = fs.mkdtempSync(path.join(os.tmpdir(), "ply-negative-unit-"));
+const sourcePath = path.join(root, "web/protocol/ply-import.ts");
+const transpiled = ts.transpileModule(fs.readFileSync(sourcePath, "utf8"), { compilerOptions: { module: ts.ModuleKind.ES2022, target: ts.ScriptTarget.ES2022 }, fileName: sourcePath, reportDiagnostics: true });
+assert.deepEqual(transpiled.diagnostics, []);
+const modulePath = path.join(temporary, "ply-import.mjs");
+fs.writeFileSync(modulePath, transpiled.outputText);
+const protocol = await import(pathToFileURL(modulePath));
+const fixtureRoot = path.join(root, "tests/files/web/m12_ply_negative_v1");
+const bytes = (name) => { const value = fs.readFileSync(path.join(fixtureRoot, name)); return value.buffer.slice(value.byteOffset, value.byteOffset + value.byteLength); };
+
+test("M12-07I blocks big-endian PLY with a stable format code", () => {
+  assert.throws(() => protocol.importPLY(bytes("big-endian.ply")), /PLY_FORMAT_UNSUPPORTED/);
+});
+
+test("M12-07I blocks malformed lists and oversized element counts", () => {
+  assert.throws(() => protocol.importPLY(bytes("malformed-list-ascii.ply")), /PLY_DATA_TRUNCATED/);
+  assert.throws(() => protocol.importPLY(bytes("oversized-count-ascii.ply")), /PLY_IMPORT_BUDGET_EXCEEDED: vertex/);
+});
+
+test.after(() => fs.rmSync(temporary, { recursive: true, force: true }));