Example of refactoring using rope library.

tools/telemetry/third_party/rope/ropetest/refactor/multiprojecttest.py

+import unittest
+
+from rope.refactor import multiproject, rename, move
+from ropetest import testutils
+
+
+class MultiProjectRefactoringTest(unittest.TestCase):
+
+    def setUp(self):
+        super(MultiProjectRefactoringTest, self).setUp()
+        self.project1 = testutils.sample_project(foldername='testproject1')
+        self.project2 = testutils.sample_project(foldername='testproject2')
+        self.mod1 = self.project1.root.create_file('mod1.py')
+        self.other = self.project1.root.create_file('other.py')
+        self.mod2 = self.project2.root.create_file('mod2.py')
+
+    def tearDown(self):
+        testutils.remove_project(self.project1)
+        testutils.remove_project(self.project2)
+        super(MultiProjectRefactoringTest, self).tearDown()
+
+    def test_trivial_rename(self):
+        self.mod1.write('var = 1\n')
+        refactoring = multiproject.MultiProjectRefactoring(
+            rename.Rename, [])
+        renamer = refactoring(self.project1, self.mod1, 1)
+        multiproject.perform(renamer.get_all_changes('newvar'))
+        self.assertEquals('newvar = 1\n', self.mod1.read())
+
+    def test_rename(self):
+        self.mod1.write('var = 1\n')
+        self.mod2.write('import mod1\nmyvar = mod1.var\n')
+        refactoring = multiproject.MultiProjectRefactoring(
+            rename.Rename, [self.project2])
+        renamer = refactoring(self.project1, self.mod1, 1)
+        multiproject.perform(renamer.get_all_changes('newvar'))
+        self.assertEquals('newvar = 1\n', self.mod1.read())
+        self.assertEquals('import mod1\nmyvar = mod1.newvar\n',
+                          self.mod2.read())
+
+    def test_move(self):
+        self.mod1.write('def a_func():\n    pass\n')
+        self.mod2.write('import mod1\nmyvar = mod1.a_func()\n')
+        refactoring = multiproject.MultiProjectRefactoring(
+            move.create_move, [self.project2])
+        renamer = refactoring(self.project1, self.mod1,
+                              self.mod1.read().index('_func'))
+        multiproject.perform(renamer.get_all_changes(self.other))
+        self.assertEquals('', self.mod1.read())
+        self.assertEquals('def a_func():\n    pass\n', self.other.read())
+        self.assertEquals(
+            'import mod1\nimport other\nmyvar = other.a_func()\n',
+            self.mod2.read())
+
+    def test_rename_from_the_project_not_containing_the_change(self):
+        self.project2.get_prefs().add('python_path', self.project1.address)
+        self.mod1.write('var = 1\n')
+        self.mod2.write('import mod1\nmyvar = mod1.var\n')
+        refactoring = multiproject.MultiProjectRefactoring(
+            rename.Rename, [self.project1])
+        renamer = refactoring(self.project2, self.mod2,
+                              self.mod2.read().rindex('var'))
+        multiproject.perform(renamer.get_all_changes('newvar'))
+        self.assertEquals('newvar = 1\n', self.mod1.read())
+        self.assertEquals('import mod1\nmyvar = mod1.newvar\n',
+                          self.mod2.read())
+
+
+if __name__ == '__main__':
+    unittest.main()