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test/parallel/test-async-wrap-constructor.js

@@ -0,0 +1,21 @@
+'use strict';
+
+// This tests that using falsy values in createHook throws an error.
+
+require('../common');
+const assert = require('assert');
+const async_hooks = require('async_hooks');
+
+const falsyValues = [0, 1, false, true, null, 'hello'];
+for (const badArg of falsyValues) {
+  const hookNames = ['init', 'before', 'after', 'destroy', 'promiseResolve'];
+  for (const hookName of hookNames) {
+    assert.throws(() => {
+      async_hooks.createHook({ [hookName]: badArg });
+    }, {
+      code: 'ERR_ASYNC_CALLBACK',
+      name: 'TypeError',
+      message: `hook.${hookName} must be a function`
+    });
+  }
+}