test: split test-esm-wasm.js

The test has been flaking due to either timeout or calling
uv_async_send on a closing/closed handle. As the test squeezes
too many independent test cases in one file, split it up to
avoid timing out on slower machines and aid debugging.

PR-URL: #60491
Refs: https://github.com/nodejs/reliability/blob/main/reports/2025-10-29.md
Reviewed-By: Luigi Pinca <[email protected]>
Reviewed-By: James M Snell <[email protected]>

Author: joyeecheung

test/es-module/test-esm-wasm-escape-import-names.mjs

@@ -0,0 +1,10 @@
+// Test that import names are properly escaped
+import '../common/index.mjs';
+import { spawnSyncAndAssert } from '../common/child_process.js';
+import * as fixtures from '../common/fixtures.js';
+
+spawnSyncAndAssert(
+  process.execPath,
+  ['--no-warnings', fixtures.path('es-modules/test-wasm-escape-import-names.mjs')],
+  { stdout: '', stderr: '', trim: true }
+);

test/es-module/test-esm-wasm-globals-all-types.mjs

@@ -0,0 +1,10 @@
+// Test that all WebAssembly global types are properly handled
+import '../common/index.mjs';
+import { spawnSyncAndAssert } from '../common/child_process.js';
+import * as fixtures from '../common/fixtures.js';
+
+spawnSyncAndAssert(
+  process.execPath,
+  ['--no-warnings', fixtures.path('es-modules/test-wasm-globals-all-types.mjs')],
+  { stdout: '', stderr: '', trim: true }
+);

test/es-module/test-esm-wasm-js-string-builtins.mjs

@@ -0,0 +1,10 @@
+// Test that js-string builtins are supported
+import '../common/index.mjs';
+import { spawnSyncAndAssert } from '../common/child_process.js';
+import * as fixtures from '../common/fixtures.js';
+
+spawnSyncAndAssert(
+  process.execPath,
+  ['--no-warnings', fixtures.path('es-modules/test-wasm-js-string-builtins.mjs')],
+  { stdout: '', stderr: '', trim: true }
+);

test/es-module/test-esm-wasm-load-exports.mjs

@@ -0,0 +1,10 @@
+// Test that WASM modules can load and export functions correctly
+import '../common/index.mjs';
+import { spawnSyncAndAssert } from '../common/child_process.js';
+import * as fixtures from '../common/fixtures.js';
+
+spawnSyncAndAssert(
+  process.execPath,
+  ['--no-warnings', fixtures.path('es-modules/test-wasm-load-exports.mjs')],
+  { stdout: '', stderr: '', trim: true }
+);

test/es-module/test-esm-wasm-module-instances-warning.mjs

@@ -0,0 +1,17 @@
+// Test that experimental warning is emitted for WASM module instances
+import '../common/index.mjs';
+import assert from 'node:assert';
+
+import { spawnSyncAndAssert } from '../common/child_process.js';
+import * as fixtures from '../common/fixtures.js';
+
+spawnSyncAndAssert(
+  process.execPath,
+  [fixtures.path('es-modules/wasm-modules.mjs')],
+  {
+    stderr(output) {
+      assert.match(output, /ExperimentalWarning/);
+      assert.match(output, /Importing WebAssembly module instances/);
+    }
+  }
+);

test/es-module/test-esm-wasm-no-code-injection.mjs

@@ -0,0 +1,10 @@
+// Test that code injection through export names is not allowed
+import '../common/index.mjs';
+import { spawnSyncAndAssert } from '../common/child_process.js';
+import * as fixtures from '../common/fixtures.js';
+
+spawnSyncAndAssert(
+  process.execPath,
+  ['--no-warnings', fixtures.path('es-modules/export-name-code-injection.wasm')],
+  { stdout: '', stderr: '', trim: true }
+);

test/es-module/test-esm-wasm-non-identifier-exports.mjs

@@ -0,0 +1,10 @@
+// Test that WASM modules can have non-identifier export names
+import '../common/index.mjs';
+import { spawnSyncAndAssert } from '../common/child_process.js';
+import * as fixtures from '../common/fixtures.js';
+
+spawnSyncAndAssert(
+  process.execPath,
+  ['--no-warnings', fixtures.path('es-modules/test-wasm-non-identifier-exports.mjs')],
+  { stdout: '', stderr: '', trim: true }
+);

test/es-module/test-esm-wasm-reject-wasm-export-names.mjs

@@ -0,0 +1,10 @@
+// Test WASM module with invalid export name starting with 'wasm:'
+import '../common/index.mjs';
+import { spawnSyncAndAssert } from '../common/child_process.js';
+import * as fixtures from '../common/fixtures.js';
+
+spawnSyncAndAssert(
+  process.execPath,
+  ['--no-warnings', fixtures.path('es-modules/test-wasm-reject-wasm-export-names.mjs')],
+  { status: 1, stderr: /Invalid Wasm export/ }
+);

test/es-module/test-esm-wasm-reject-wasm-import-names.mjs

@@ -0,0 +1,10 @@
+// Test WASM module with invalid import name starting with 'wasm:'
+import '../common/index.mjs';
+import { spawnSyncAndAssert } from '../common/child_process.js';
+import * as fixtures from '../common/fixtures.js';
+
+spawnSyncAndAssert(
+  process.execPath,
+  ['--no-warnings', fixtures.path('es-modules/test-wasm-reject-wasm-import-names.mjs')],
+  { status: 1, stderr: /Invalid Wasm import name/ }
+);

test/es-module/test-esm-wasm-reject-wasm-js-export-names.mjs

@@ -0,0 +1,10 @@
+// Test WASM module with invalid export name starting with 'wasm-js:'
+import '../common/index.mjs';
+import { spawnSyncAndAssert } from '../common/child_process.js';
+import * as fixtures from '../common/fixtures.js';
+
+spawnSyncAndAssert(
+  process.execPath,
+  ['--no-warnings', fixtures.path('es-modules/test-wasm-reject-wasm-js-export-names.mjs')],
+  { status: 1, stderr: /Invalid Wasm export/ }
+);