Add new 'typ' python testing framework to third_party/.

third_party/typ/typ/tests/printer_test.py

Index: third_party/typ/typ/tests/printer_test.py
diff --git a/third_party/typ/typ/tests/printer_test.py b/third_party/typ/typ/tests/printer_test.py
new file mode 100644
index 0000000000000000000000000000000000000000..b2310bc05e4e5c8e92c3986aa8617ac19b45a58b
--- /dev/null
+++ b/third_party/typ/typ/tests/printer_test.py
@@ -0,0 +1,61 @@
+# Copyright 2014 Dirk Pranke. All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import unittest
+
+from typ.printer import Printer
+
+
+class TestPrinter(unittest.TestCase):
+
+    def setUp(self):
+        # 'Invalid name' pylint: disable=C0103
+        self.out = []
+
+    def print_(self, msg, end='\n'):
+        self.out.append(msg + end)
+
+    def test_basic(self):
+        pr = Printer(self.print_, False, 80)
+        pr.update('foo')
+        pr.flush()
+        self.assertEqual(self.out, ['foo', '\n'])
+
+    def test_elide(self):
+        pr = Printer(self.print_, False, 8)
+        pr.update('hello world')
+        pr.flush()
+        self.assertEqual(self.out, ['h...d', '\n'])
+
+    def test_overwrite(self):
+        pr = Printer(self.print_, True, 80)
+        pr.update('hello world')
+        pr.update('goodbye world')
+        pr.flush()
+        self.assertEqual(self.out,
+                         ['hello world',
+                          '\r           \r',
+                          'goodbye world',
+                          '\n'])
+
+    def test_last_line_flushed_when_not_overwriting(self):
+        pr = Printer(self.print_, False, 80)
+        pr.update('foo\nbar')
+        pr.update('baz')
+        pr.flush()
+        self.assertEqual(self.out,
+                         ['foo\nbar',
+                          '\n',
+                          'baz',
+                          '\n'])