Initial source commit to grit-i18n project.

grit/format/policy_templates/writers/writer_unittest_common.py

+# Copyright (c) 2011 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+'''Common tools for unit-testing writers.'''
+
+
+import os
+import sys
+if __name__ == '__main__':
+  sys.path.append(os.path.join(os.path.dirname(sys.argv[0]), '../../../..'))
+
+import tempfile
+import unittest
+import StringIO
+
+from grit import grd_reader
+from grit import util
+from grit.tool import build
+
+
+class DummyOutput(object):
+  def __init__(self, type, language, file = 'hello.gif'):
+    self.type = type
+    self.language = language
+    self.file = file
+  def GetType(self):
+    return self.type
+  def GetLanguage(self):
+    return self.language
+  def GetOutputFilename(self):
+    return self.file
+
+
+class WriterUnittestCommon(unittest.TestCase):
+  '''Common class for unittesting writers.'''
+
+  def PrepareTest(self, policy_json):
+    '''Prepares and parses a grit tree along with a data structure of policies.
+
+    Args:
+      policy_json: The policy data structure in JSON format.
+    '''
+    # First create a temporary file that contains the JSON policy list.
+    tmp_file_name = 'test.json'
+    tmp_dir_name = tempfile.gettempdir()
+    json_file_path = tmp_dir_name + '/' + tmp_file_name
+    f = open(json_file_path, 'w')
+    f.write(policy_json.strip())
+    f.close()
+    # Then assemble the grit tree.
+    grd_text = '''
+    <grit base_dir="." latest_public_release="0" current_release="1" source_lang_id="en">
+      <release seq="1">
+        <structures>
+          <structure name="IDD_POLICY_SOURCE_FILE" file="%s" type="policy_template_metafile" />
+        </structures>
+      </release>
+    </grit>''' % json_file_path
+    grd_string_io = StringIO.StringIO(grd_text)
+    # Parse the grit tree and load the policies' JSON with a gatherer.
+    grd = grd_reader.Parse(grd_string_io, dir=tmp_dir_name)
+    grd.RunGatherers(recursive=True)
+    # Remove the policies' JSON.
+    os.unlink(json_file_path)
+    return grd
+
+  def GetOutput(self, grd, env_lang, env_defs, out_type, out_lang):
+    '''Generates an output of a writer.
+
+    Args:
+      grd: The root of the grit tree.
+      env_lang: The environment language.
+      env_defs: Environment definitions.
+      out_type: Type of the output node for which output will be generated.
+        This selects the writer.
+      out_lang: Language of the output node for which output will be generated.
+
+    Returns:
+      The string of the tamplete created by the writer.
+    '''
+    grd.SetOutputContext(env_lang, env_defs)
+    buf = StringIO.StringIO()
+    build.RcBuilder.ProcessNode(grd, DummyOutput(out_type, out_lang), buf)
+    return buf.getvalue()