Add Page. TransferToPageSet

tools/telemetry/telemetry/page/page_unittest.py

Index: tools/telemetry/telemetry/page/page_unittest.py
diff --git a/tools/telemetry/telemetry/page/page_unittest.py b/tools/telemetry/telemetry/page/page_unittest.py
index c60c59df5fb742be0d1fe8751b66d4c15951b04e..b392e55b457d90a402787dc4cfa3ef992fe6af59 100644
--- a/tools/telemetry/telemetry/page/page_unittest.py
+++ b/tools/telemetry/telemetry/page/page_unittest.py
@@ -137,3 +137,19 @@ class TestPage(unittest.TestCase):
           'url': 'http://example.com/',
           'name': 'Example'
         }, named_dict)
+
+  def testTransferToPageSet(self):
+    page_set_a = page_set.PageSet()
+    page_set_b = page_set.PageSet()
+    page_foo = page.Page('http://foo.com', page_set_a)
+    page_bar = page.Page('http://bar.com', page_set_a)
+    page_baz = page.Page('http://baz.com', page_set_a)
+
+    page_set_a.AddPage(page_foo)
+    page_set_a.AddPage(page_bar)
+    page_set_a.AddPage(page_baz)
+
+    page_bar.TransferToPageSet(page_set_b)
+    self.assertEqual([page_foo, page_baz], page_set_a.pages)
+    self.assertEqual([page_bar], page_set_b.pages)
+    self.assertIs(page_set_b, page_bar.page_set)