get this right.

$ brew install cmake ninja npm

$ brew install cmake ninja npm rust

$ git clone --recursive https://github.com/unicode-org/text-rendering-tests.git

$cd text-rendering-tests

$forenginein CoreText FreeStack TehreerStack fontkit OpenType.js;do python check.py --engine=$engine --output=reports/$engine.html;done

$forenginein CoreText FreeStack TehreerStack fontkit OpenType.jsAllsorts;do python check.py --engine=$engine --output=reports/$engine.html;done

* With`--engine=OpenType.js`, the tests are run using[OpenType.js](https://github.com/nodebox/opentype.js), another JavaScript font engine.

—[Test report for OpenType.js](https://rawgit.com/unicode-org/text-rendering-tests/master/reports/OpenType.js.html).

* With`--engine=Allsorts`, the tests are run using[Allsorts](https://github.com/yeslogic/allsorts),

a parsing and shaping engine implemented in[Rust](https://www.rust-lang.org/).

—[Test report for Allsorts](https://rawgit.com/unicode-org/text-rendering-tests/master/reports/Allsorts.html).

It’s trivial to test other implementations; simply write a small

wrapper tool. For the[Go font

library](https://godoc.org/golang.org/x/image/font/sfnt), see

self.command='node_modules/opentype.js/bin/test-render'

elifself.engine=='fontkit':

self.command='src/third_party/fontkit/render'

elifself.engine=='Allsorts':

self.command='src/third_party/allsorts/allsorts-tools/target/release/allsorts'

else:

self.command='build/fonttest/fonttest'

self.datestr=self.make_datestr()

self.observed= {}# testcase --> SVG ElementTree

defget_version(self):

ifself.enginein {'CoreText','FreeStack','TehreerStack'}:

ifself.enginein {'CoreText','FreeStack','TehreerStack','Allsorts'}:

returnsubprocess.check_output([self.command,'--version',

'--engine='+self.engine])

ifself.enginein ('OpenType.js','fontkit'):

defbuild(engine):

ifengine=='OpenType.js'orengine=='fontkit':

subprocess.check_call(['npm','install'])

elifengine=='Allsorts':

subprocess.check_call(['cargo','build','--release','--manifest-path','src/third_party/allsorts/allsorts-tools/Cargo.toml'])

else:

ifnotos.path.exists('build'):os.mkdir('build')

subprocess.check_call(['cmake','-GNinja','../src'],cwd='build')

etree.register_namespace('xlink','http://www.w3.org/1999/xlink')

parser=argparse.ArgumentParser()

parser.add_argument('--engine',

choices=['FreeStack','TehreerStack','CoreText','DirectWrite','OpenType.js','fontkit'],

choices=['FreeStack','TehreerStack','CoreText','DirectWrite','OpenType.js','fontkit','Allsorts'],

default='FreeStack')

parser.add_argument('--output',help='path to report file being written')

args=parser.parse_args()