parser-combinator/src/test/stream/stream_test.js

Parser combinators

import stream from '../../lib/stream/index';

/*
  ======== A Handy Little Nodeunit Reference ========
  https://github.com/caolan/nodeunit

  Test methods:
    test.expect(numAssertions)
    test.done()
  Test assertions:
    test.ok(value, [message])
    test.equal(actual, expected, [message])
    test.notEqual(actual, expected, [message])
    test.deepEqual(actual, expected, [message])
    test.notDeepEqual(actual, expected, [message])
    test.strictEqual(actual, expected, [message])
    test.notStrictEqual(actual, expected, [message])
    test.throws(block, [error], [message])
    test.doesNotThrow(block, [error], [message])
    test.ifError(value)
*/

export default {
    setUp: function(done) {
        done();
    },

    'endOfStream for empty stream': function(test) {
        test.expect(1);
        // tests here
        test.ok(stream.ofString('').endOfStream(0), 'should be endOfStream.');
        test.done();
    },

    'endOfStream for non empty stream': function(test) {
        test.expect(1);
        // tests here
        test.ok(stream.ofString('1').endOfStream(1), 'should be endOfStream.');
        test.done();
    },

    'no endOfStream for non empty stream': function(test) {
        test.expect(1);
        // tests here
        test.equal(
            stream.ofString('1').endOfStream(0),
            false,
            'should be endOfStream.'
        );
        test.done();
    },

    'get from stream': function(test) {
        test.expect(1);
        // tests here
        test.equal(
            stream.ofString('1').get(0).isSuccess(),
            true,
            'should be a success.'
        );
        test.done();
    },

    'do not get from empty stream': function(test) {
        test.expect(1);
        // tests here
        test.equal(
            stream.ofString('1').get(1).isSuccess(),
            false,
            'should be a failure.'
        );
        test.done();
    },

    'do not get from erroneous stream': function(test) {
        test.expect(1);
        // tests here
        test.equal(
            stream
                .ofString({
                    length: 1,
                    charAt: function() {
                        throw new Error();
                    },
                })
                .get(0)
                .isSuccess(),
            false,
            'should be a failure.'
        );
        test.done();
    },
};