Add script to update relevant changes to Node.js.

tools/release/test_update_node.py

Index: tools/release/test_update_node.py
diff --git a/tools/release/test_update_node.py b/tools/release/test_update_node.py
new file mode 100755
index 0000000000000000000000000000000000000000..82023d8f6feff4c07c45dd2a356b4f3292b9bd5f
--- /dev/null
+++ b/tools/release/test_update_node.py
@@ -0,0 +1,91 @@
+#!/usr/bin/env python
+# Copyright 2017 the V8 project authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+import os
+import shutil
+import subprocess
+import sys
+import tempfile
+import unittest
+
+import update_node
+
+# Base paths.
+BASE_DIR = os.path.dirname(os.path.abspath(__file__))
+TEST_DATA = os.path.join(BASE_DIR, 'testdata')
+
+# Expectations.
+EXPECTED_GITIGNORE = """
+/testing/gtest/*
+!/testing/gtest/include
+/testing/gtest/include/*
+!/testing/gtest/include/gtest
+/testing/gtest/include/gtest/*
+!/testing/gtest/include/gtest/gtest_prod.h
+!/third_party/jinja2
+!/third_party/markupsafe
+/unrelated
+"""
+
+ADDED_FILES = [
+  'v8_new',
+  'new/v8_new',
+  'baz/v8_new',
+  'testing/gtest/gtest_new',
+  'testing/gtest/new/gtest_new',
+  'testing/gtest/baz/gtest_new',

[Michael Achenbach, 2017/03/14 08:37:26]

nit: The files from marupsafe and jinja2 could be added here too.

+]
+
+REMOVED_FILES = [
+  'delete_me',
+  'baz/delete_me',
+  'testing/gtest/delete_me',
+  'testing/gtest/baz/delete_me',
+]
+
+def gitify(path):
+  files = os.listdir(path)
+  subprocess.check_call(['git', 'init'], cwd=path)
+  subprocess.check_call(['git', 'add'] + files, cwd=path)
+  subprocess.check_call(['git', 'commit', '-m="Initial"'], cwd=path)
+
+
+class TestUpdateNode(unittest.TestCase):
+  def setUp(self):
+    self.workdir = tempfile.mkdtemp(prefix='tmp_test_node_')
+
+  def tearDown(self):
+    shutil.rmtree(self.workdir)
+
+  def testUpdate(self):
+    v8_cwd = os.path.join(self.workdir, 'v8')
+    gtest_cwd = os.path.join(self.workdir, 'v8', 'testing', 'gtest')
+    node_cwd = os.path.join(self.workdir, 'node')
+
+    # Set up V8 test fixture.
+    shutil.copytree(src=os.path.join(TEST_DATA, 'v8'), dst=v8_cwd)
+    gitify(v8_cwd)
+    for repository in update_node.SUB_REPOSITORIES:
+      gitify(os.path.join(v8_cwd, *repository))

[Yang, 2017/03/14 08:26:27]

They are gitified here :)

[Michael Achenbach, 2017/03/14 08:37:26]

Ah right, then this nit:
Unused variable gtest_cwd above :) - just looked at that line...

+
+    # Set up node test fixture (no git repo required).
+    shutil.copytree(src=os.path.join(TEST_DATA, 'node'), dst=node_cwd)
+
+    # Run update script.
+    update_node.Main([v8_cwd, node_cwd])
+
+    # Check expectations.
+    with open(os.path.join(node_cwd, 'deps', 'v8', '.gitignore')) as f:
+      actual_gitignore = f.read()
+    self.assertEquals(EXPECTED_GITIGNORE.strip(), actual_gitignore.strip())
+    for f in ADDED_FILES:
+      added_file = os.path.join(node_cwd, 'deps', 'v8', *f.split('/'))
+      self.assertTrue(os.path.exists(added_file))
+    for f in REMOVED_FILES:
+      removed_file = os.path.join(node_cwd, 'deps', 'v8', *f.split('/'))
+      self.assertFalse(os.path.exists(removed_file))
+
+if __name__ == "__main__":
+  unittest.main()