const test = require('node:test');
const assert = require('node:assert/strict');

const { Reactor_PFR } = require('../../src/specificClass');
const { makeReactorConfig } = require('../helpers/factories');

test('oxygen measurement at exact reactor length is clamped to the last PFR grid index', () => {
  const reactor = new Reactor_PFR(
    makeReactorConfig({ reactor_type: 'PFR', length: 10, resolution_L: 5, n_inlets: 1 }),
  );

  assert.doesNotThrow(() => {
    reactor._updateMeasurement('quantity (oxygen)', 2.5, 10, {});
  });
  assert.equal(reactor.state[reactor.n_x - 1][0], 2.5);
});