"Integration | Component | sl date time: Date values applied correctly" test failing in CI

[notmessenger]

not ok 103 PhantomJS 1.9 - Integration | Component | sl date time: Date values applied correctly
    ---
        actual: >
            2015-11-26
        expected: >
            2015-11-27
        message: >
            Default date string matches default date pattern
        Log: |
    ...

I re-ran the build on CI several times and it kept failing. When I ran it again the next day (27 Feb 2016) it was passing again. Perhaps our logic approach is flawed?

This is when the content of the test case was:

test( 'Date values applied correctly', function( assert ) {

    const pastDateISO = window.moment().subtract( 3, 'months' ).toISOString();

    this.set( 'value', pastDateISO );

    this.render( hbs`
        {{sl-date-time
            format="date"
            timezone="America/Chicago"
            value=value
        }}
    ` );

    const pastRendered = this.$( '>:first-child' ).text().trim();
    const pastDate = window.moment().subtract( 3, 'months' );

    assert.strictEqual(
        pastRendered,
        pastDate.format( 'YYYY-MM-DD' ),
        'Default date string matches default date pattern'
    );

    const datetimeAttr = this.$( '>:first-child' ).attr( 'datetime' );
    const dataOriginalTitleAttr = this.$( '>:first-child' ).attr( 'data-original-title' );

    assert.strictEqual(
        datetimeAttr,
        dataOriginalTitleAttr,
        'Attributes datetime and data-original-title match'
    );

    assert.strictEqual(
        /^\d{4}[-]\d{2}[-]\d{2}\s\d{1,2}[:]\d{2}\s[A-Z]+$/.test( this.$( '>:first-child' ).attr( 'datetime' ) ),
        true,
        'Attribute datetime matches ISO datetime format plus timezone code'
    );
});