Add csv formatter test

Change-Id: Ief2a6514c417f7de18e736599e8090075ebf8fc8

cliff/tests/test_formatters_csv.py

@@ -0,0 +1,40 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+import mock
+
+import six
+
+from cliff.formatters import commaseparated
+
+
+def test_commaseparated_list_formatter():
+    sf = commaseparated.CSVLister()
+    c = ('a', 'b', 'c')
+    d1 = ('A', 'B', 'C')
+    d2 = ('D', 'E', 'F')
+    data = [d1, d2]
+    expected = 'a,b,c\nA,B,C\nD,E,F\n'
+    output = six.StringIO()
+    parsed_args = mock.Mock()
+    parsed_args.quote_mode = 'none'
+    sf.emit_list(c, data, output, parsed_args)
+    actual = output.getvalue()
+    assert expected == actual
+
+
+def test_commaseparated_list_formatter_unicode():
+    sf = commaseparated.CSVLister()
+    c = (u'a', u'b', u'c')
+    d1 = (u'A', u'B', u'C')
+    happy = u'高兴'
+    d2 = (u'D', u'E', happy)
+    data = [d1, d2]
+    expected = u'a,b,c\nA,B,C\nD,E,%s\n' % happy
+    output = six.StringIO()
+    parsed_args = mock.Mock()
+    parsed_args.quote_mode = 'none'
+    sf.emit_list(c, data, output, parsed_args)
+    actual = output.getvalue()
+    if six.PY2:
+        actual = actual.decode('utf-8')
+    assert expected == actual