Merge "Add more emoji-related tests" into nyc-dev

def check_emoji_defaults():

    default_emoji_chars = _emoji_properties['Emoji_Presentation']

    missing_text_chars = _emoji_properties['Emoji'] - default_emoji_chars

    emoji_font_seen = False

    for name, scripts, variant, weight, style, font in _fallback_chain:

        if 'Zsye' in scripts:

        if emoji_font_seen and not scripts:

            continue

        if font[1] is None:

            emoji_to_skip = set()

        else:

            # CJK font, skip checking the following characters for now.

            # See b/26153752

            emoji_to_skip = ({

                0x26BD, # SOCCER BALL

                0x26BE, # BASEBALL

                0x1F18E, # NEGATIVE SQUARED AB

                0x1F201, # SQUARED KATAKANA KOKO

                0x1F21A, # SQUARED CJK UNIFIED IDEOGRAPH-7121

                0x1F22F, # SQUARED CJK UNIFIED IDEOGRAPH-6307

            } | set(xrange(0x1F191, 0x1F19A+1))

              | set(xrange(0x1F232, 0x1F236+1))

              | set(xrange(0x1F238, 0x1F23A+1))

              | set(xrange(0x1F250, 0x1F251+1)))

        assert_font_supports_none_of_chars(font,

            sorted(default_emoji_chars - emoji_to_skip))

        # Check default emoji-style characters

        assert_font_supports_none_of_chars(font, sorted(default_emoji_chars))

        # Mark default text-style characters appearing in fonts above the emoji

        # font as seen

        if not emoji_font_seen:

            missing_text_chars -= set(get_best_cmap(font))

    # Noto does not have monochrome symbols for Unicode 7.0 wingdings and

    # webdings

    missing_text_chars -= _chars_by_age['7.0']

    # TODO: Remove these after b/26113320 is fixed

    missing_text_chars -= {

        0x263A, # WHITE SMILING FACE

        0x270C, # VICTORY HAND

        0x2744, # SNOWFLAKE

        0x2764, # HEAVY BLACK HEART

    }

    assert missing_text_chars == set(), (

        'Text style version of some emoji characters are missing.')

def parse_ucd(ucd_path):

    global _emoji_properties

    _emoji_properties = collections.defaultdict(set)

    with open(path.join(ucd_path, 'emoji-data.txt')) as emoji_data_txt:

        for line in emoji_data_txt:

# Setting reverse to true returns a dictionary that maps the values to sets of

# characters, useful for some binary properties. Otherwise, we get a

# dictionary that maps characters to the property values, assuming there's only

# one property in the file.

def parse_unicode_datafile(file_path, reverse=False):

    if reverse:

        output_dict = collections.defaultdict(set)

    else:

        output_dict = {}

    with open(file_path) as datafile:

        for line in datafile:

            if '#' in line:

                line = line[:line.index('#')]

            line = line.strip()

                char_start = char_end = char_range

            char_start = int(char_start, 16)

            char_end = int(char_end, 16)

            _emoji_properties[prop].update(xrange(char_start, char_end+1))

            char_range = xrange(char_start, char_end+1)

            if reverse:

                output_dict[prop].update(char_range)

            else:

                for char in char_range:

                    assert char not in output_dict

                    output_dict[char] = prop

    return output_dict

def parse_ucd(ucd_path):

    global _emoji_properties, _chars_by_age

    _emoji_properties = parse_unicode_datafile(

        path.join(ucd_path, 'emoji-data.txt'), reverse=True)

    _chars_by_age = parse_unicode_datafile(

        path.join(ucd_path, 'DerivedAge.txt'), reverse=True)

def main():