import {Latus} from '@latus/core';
import {expect} from 'chai';

import {
  buildCondition,
  buildInvoke,
  buildExpression,
  buildValue,
} from '../src/builders';
import Context from '../src/context';
import compile from '../src/compilers/compile';

const {name} = require('../package.json');

describe(name, () => {
  let latus;
  let context;
  beforeEach(async () => {
    latus = Latus.mock([
      ['@avocado/behavior', `${__dirname}/../src`],
    ]);
    await Promise.all(latus.invokeFlat('@latus/core/starting'));
    context = new Context({}, latus);
  });
  describe('builders', () => {
    it('can build conditions', async () => {
      const condition = compile(buildCondition('is', [
        buildValue(69),
        buildValue(69),
      ]), latus);
      expect(condition(context)).to.be.true;
    });
    it('can build expressions', async () => {
      const test = {foo: 69};
      context.add('test', test);
      const expression = compile(buildExpression(['test', 'foo']), latus);
      expect(expression(context)).to.equal(test.foo);
      const expression2 = compile(buildExpression(['test', 'foo'], 420), latus);
      expression2(context);
      expect(test.foo).to.equal(420);
    });
    it('can build invocations', async () => {
      const test = {foo: () => 69};
      context.add('test', test);
      const expression = compile(buildInvoke(['test', 'foo']), latus);
      expect(expression(context)).to.equal(69);
    });
    it('can build values', async () => {
      const passthroughs = [
        buildCondition('is', []),
        buildExpression([]),
        buildValue(69),
      ];
      for (let i = 0; i < passthroughs.length; i++) {
        const passthrough = passthroughs[i];
        expect(passthrough).to.equal(buildValue(passthrough));
      }
      expect(buildValue(420)).to.deep.equal({type: 'literal', value: 420});
    });
  });
});