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# Copyright 2020 The Chromium Authors
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
import json
import os
import os.path
import shutil
import tempfile
import unittest
import mojom_parser
from mojom.generate import module
class MojomParserTestCase(unittest.TestCase):
"""Tests covering the behavior defined by the main mojom_parser.py script.
This includes behavior around input and output path manipulation, dependency
resolution, and module serialization and deserialization."""
def __init__(self, method_name):
super().__init__(method_name)
self._temp_dir = None
def setUp(self):
self._temp_dir = tempfile.mkdtemp()
def tearDown(self):
shutil.rmtree(self._temp_dir)
self._temp_dir = None
def GetPath(self, path):
assert not os.path.isabs(path)
return os.path.join(self._temp_dir, path)
def GetModulePath(self, path):
assert not os.path.isabs(path)
return os.path.join(self.GetPath('out'), path) + '-module'
def WriteFile(self, path, contents):
full_path = self.GetPath(path)
dirname = os.path.dirname(full_path)
if not os.path.exists(dirname):
os.makedirs(dirname)
with open(full_path, 'w') as f:
f.write(contents)
def LoadModule(self, mojom_path):
with open(self.GetModulePath(mojom_path), 'rb') as f:
return module.Module.Load(f)
def ParseMojoms(self, mojoms, metadata=None):
"""Parse all input mojoms relative the temp dir."""
out_dir = self.GetPath('out')
args = [
'--input-root', self._temp_dir, '--input-root', out_dir,
'--output-root', out_dir, '--mojoms'
] + list(map(lambda mojom: os.path.join(self._temp_dir, mojom), mojoms))
if metadata:
args.extend(['--check-imports', self.GetPath(metadata)])
mojom_parser.Run(args)
def ExtractTypes(self, mojom):
filename = 'test.mojom'
self.WriteFile(filename, mojom)
self.ParseMojoms([filename])
m = self.LoadModule(filename)
definitions = {}
for kinds in (m.enums, m.structs, m.unions, m.interfaces, m.features):
for kind in kinds:
definitions[kind.mojom_name] = kind
return definitions
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