Function createRealms

test/fixtures/wpt/encoding/streams/realms.window.js:36–62

()

}

async function createRealms() {
  // All realms are visible on the global object so they can access each other.

  // The realm that the constructor function comes from.
  window.constructorRealm = await createRealm();

  // The realm in which the constructor object is called.
  window.constructedRealm = await createRealm();

  // The realm in which reading happens.
  window.readRealm = await createRealm();

  // The realm in which writing happens.
  window.writeRealm = await createRealm();

  // The realm that provides the definitions of Readable and Writable methods.
  window.methodRealm = await createRealm();

  await evalInRealmAndWait(methodRealm, `
  window.ReadableStreamDefaultReader =
      new ReadableStream().getReader().constructor;
  window.WritableStreamDefaultWriter =
      new WritableStream().getWriter().constructor;
`);
  window.readMethod = methodRealm.ReadableStreamDefaultReader.prototype.read;
  window.writeMethod = methodRealm.WritableStreamDefaultWriter.prototype.write;
}

// In order for values to be visible between realms, they need to be
// global. To prevent interference between tests, variable names are generated