Add recursion=n syntax to DEPS files.

tests/gclient_test.py

Index: tests/gclient_test.py
diff --git a/tests/gclient_test.py b/tests/gclient_test.py
index 235ca54f574f6a67fb9c4560f33e5ffb1c1a9a3f..b2d04e8797cf3263f601d637c619e34579a55111 100755
--- a/tests/gclient_test.py
+++ b/tests/gclient_test.py
@@ -306,7 +306,50 @@ class GclientTest(trial_dir.TestCase):
 
     obj = gclient.GClient.LoadCurrentConfig(options)
     self.assertEqual(['baz', 'unix'], sorted(obj.enforced_os))
-    
+
+  def testRecursionOverride(self):
+    """Verifies that recursion variable allows gclient to pull additional deps.
+
+    We only test the case of recursion override for top-level deps, as that is
+    all we support.
+    """
+    write(
+        '.gclient',
+        'solutions = [\n'
+        '  { "name": "foo", "url": "svn://example.com/foo" },\n'
+          ']')
+    write(
+        os.path.join('foo', 'DEPS'),
+        'deps = {\n'
+        '  "bar": "/bar",\n'
+        '}\n'
+        'recursion = 2')
+    write(
+        os.path.join('bar', 'DEPS'),
+        'deps = {\n'
+        '  "baz": "/baz",\n'
+        '}')
+    write(
+        os.path.join('baz', 'DEPS'),
+        'deps = {\n'
+        '  "fizz": "/fizz",\n'
+        '}')
+    write(
+        os.path.join('fizz', 'DEPS'),
+        'deps = {\n'
+        '}')
+
+    options, _ = gclient.Parser().parse_args([])
+    obj = gclient.GClient.LoadCurrentConfig(options)
+    obj.RunOnDeps('None', [])
+    self.assertEquals(
+        [
+          'svn://example.com/foo',
+          'svn://example.com/foo/bar',
+          'svn://example.com/foo/bar/baz',
+        ],
+        self._get_processed())
+
 
 if __name__ == '__main__':
   sys.stdout = gclient_utils.MakeFileAutoFlush(sys.stdout)