test-vm-new-script-new-context.js

// Copyright Joyent, Inc. and other Node contributors.
//
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// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
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// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
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// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
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'use strict';
require('../common');

const assert = require('assert');

const Script = require('vm').Script;

{
  const script = new Script('\'passed\';');
  const result1 = script.runInNewContext();
  const result2 = script.runInNewContext();
  assert.strictEqual(result1, 'passed');
  assert.strictEqual(result2, 'passed');
}

{
  const script = new Script('throw new Error(\'test\');');
  assert.throws(() => {
    script.runInNewContext();
  }, /^Error: test$/);
}

{
  const script = new Script('foo.bar = 5;');
  assert.throws(() => {
    script.runInNewContext();
  }, /^ReferenceError: foo is not defined$/);
}

{
  global.hello = 5;
  const script = new Script('hello = 2');
  script.runInNewContext();
  assert.strictEqual(global.hello, 5);

  // Cleanup
  delete global.hello;
}

{
  global.code = 'foo = 1;' +
                'bar = 2;' +
                'if (baz !== 3) throw new Error(\'test fail\');';
  global.foo = 2;
  global.obj = { foo: 0, baz: 3 };
  const script = new Script(global.code);
  /* eslint-disable no-unused-vars */
  const baz = script.runInNewContext(global.obj);
  /* eslint-enable no-unused-vars */
  assert.strictEqual(global.obj.foo, 1);
  assert.strictEqual(global.obj.bar, 2);
  assert.strictEqual(global.foo, 2);

  // cleanup
  delete global.code;
  delete global.foo;
  delete global.obj;
}

{
  const script = new Script('f()');
  function changeFoo() { global.foo = 100; }
  script.runInNewContext({ f: changeFoo });
  assert.strictEqual(global.foo, 100);

  // cleanup
  delete global.foo;
}

{
  const script = new Script('f.a = 2');
  const f = { a: 1 };
  script.runInNewContext({ f });
  assert.strictEqual(f.a, 2);

  assert.throws(() => {
    script.runInNewContext();
  }, /^ReferenceError: f is not defined$/);
}

{
  const script = new Script('');
  assert.throws(() => {
    script.runInNewContext.call('\'hello\';');
  }, /^TypeError: this\.runInContext is not a function$/);
}