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# frozen_string_literal: true
require 'spec_helper'
describe TTFunk::File do
describe '.open' do
it 'opens file paths' do
font = described_class.open(test_font('DejaVuSans'))
expect(font.contents.read(4)).to eq("\x00\x00\x00\x01")
end
it 'opens IO Objects' do
File.open(test_font('DejaVuSans')) do |io|
font = described_class.open(io)
expect(font.contents.read(4)).to eq("\x00\x00\x00\x01")
end
end
end
describe '.from_ttc' do
it 'returns font at requested index in TTC file' do
font = described_class.from_ttc(test_font('DejaVuSans', :ttc), 1)
expect(font.name.font_name.first).to eq 'DejaVu Sans Bold'
end
end
describe '#ascent' do
context 'with DejaVuSans' do
let!(:file) { described_class.open(test_font('DejaVuSans')) }
it 'extracts the correct value' do
expect(file.ascent).to eq(1556)
end
end
end
describe '#descent' do
context 'with DejaVuSans' do
let!(:file) { described_class.open(test_font('DejaVuSans')) }
it 'extracts the correct value' do
expect(file.descent).to eq(-492)
end
end
end
describe '#line_gap' do
context 'with DejaVuSans' do
let!(:file) { described_class.open(test_font('DejaVuSans')) }
it 'extracts the correct value' do
expect(file.line_gap).to eq(410)
end
end
end
describe '#bbox' do
context 'with DejaVuSans' do
let!(:file) { described_class.open(test_font('DejaVuSans')) }
it 'extracts the correct value' do
expect(file.bbox).to eq([-2090, -850, 3442, 2389])
end
end
end
describe 'preferred_family_name' do
context 'with DejaVuSans' do
let!(:file) { described_class.open(test_font('DejaVuSans')) }
it 'extracts the correct value' do
expect(file.name.preferred_family.first).to eq('DejaVu Sans')
end
end
end
describe '#cmap' do
context 'with DejaVuSans' do
let!(:file) { described_class.open(test_font('DejaVuSans')) }
it 'extracts cmap tables in descending order of format' do
cmaps = file.cmap.unicode
expect(cmaps.size).to eq(4)
expect(cmaps.map(&:format)).to eq([12, 12, 4, 4])
end
it 'lookups code in cmap format 12 table' do
cmap_format12 = file.cmap.unicode.first
expect(cmap_format12.format).to eq(12)
expect(cmap_format12[32]).to eq(3)
end
end
# M+ 1p is a CJK font that includes a cmap format 14 table we use a trimmed
# down version of the font generated with fontforge for testing purposes
context 'with M+ 1p' do
let!(:file) { described_class.open(test_font('Mplus1p')) }
# this test verifies that the cmap format 14 table is ignored
it 'extracts cmap tables in descending order of format' do
cmaps = file.cmap.unicode
expect(cmaps.size).to eq(2)
expect(cmaps.map(&:format)).to eq([4, 4])
end
it 'lookups code in cmap format 4 table' do
cmap_format4 = file.cmap.unicode.first
expect(cmap_format4.format).to eq(4)
expect(cmap_format4[32]).to eq(4)
end
end
end
describe '#directory_info' do
context 'with DejaVuSans' do
let(:file) { described_class.open(test_font('DejaVuSans')) }
it 'extracts the head entry correctly' do
head = file.directory_info('head')
expect(head).to eq(
tag: 'head',
checksum: 0xF95F2039,
offset: 581_036,
length: 54,
)
end
it 'extracts the hmtx entry correctly' do
hmtx = file.directory_info('hmtx')
expect(hmtx).to eq(
tag: 'hmtx',
checksum: 0xF7E35CB8,
offset: 581_128,
length: 23_712,
)
end
it 'extracts the glyf entry correctly' do
glyf = file.directory_info('glyf')
expect(glyf).to eq(
tag: 'glyf',
checksum: 0x77CAC4E8,
offset: 51_644,
length: 529_392,
)
end
end
context 'with NotoSans' do
let(:file) { described_class.open(test_font('NotoSansCJKsc-Thin', :otf)) }
it 'extracts the CFF entry correctly' do
cff = file.directory_info('CFF ')
expect(cff).to eq(
tag: 'CFF ',
checksum: 0xE3109AB9,
offset: 260_480,
length: 14_170_569,
)
end
end
end
describe '#sbix' do
context 'with ColorTestSbix' do
# Thank you http://typophile.com/node/103268 for ColorTestSbix.ttf
let!(:file) { described_class.open(test_font('ColorTestSbix')) }
it 'shoulds extract headers' do
expect(file.sbix.version).to eq(1)
expect(file.sbix.flags).to eq(1)
expect(file.sbix.num_strikes).to eq(1)
end
it 'extracts bitmap data given a glyph id and strike index' do
bitmap = file.sbix.bitmap_data_for(4, 0)
expect(bitmap.x).to eq(0)
expect(bitmap.y).to eq(0)
expect(bitmap.type).to eq('png')
expect(bitmap.data.read).to match(/IHDR.*ImageReady.*IEND/m)
expect(bitmap.ppem).to eq(150)
expect(bitmap.resolution).to eq(72)
end
it 'extracts an array of all bitmap data given a glyph id' do
all_bitmaps = file.sbix.all_bitmap_data_for(4)
expect(all_bitmaps.size).to eq(1)
expect(all_bitmaps[0].ppem).to eq(150)
end
end
end
end
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