Avoid double apostrophes

If the value is Single it's already quoted with apostrophes.
Avoid double apostrophes it that case by using double-quotes instead.

For example, if the value is 'value' the output is "'value'" instead of
''value''.

1 files changed, 6 insertions, 0 deletions

diff --git a/tests/test_tokenize.py b/tests/test_tokenize.py
index 6cc0dfa..93645d8 100644
--- a/tests/test_tokenize.py
+++ b/tests/test_tokenize.py
@@ -95,6 +95,12 @@ def test_tokenlist_repr():
     assert repr(p.tokens[0])[:len(tst)] == tst
 
 
+def test_single_quotes():
+    p = sqlparse.parse("'test'")[0]
+    tst = "<Single \"'test'\" at 0x"
+    assert repr(p.tokens[0])[:len(tst)] == tst
+
+
 def test_tokenlist_first():
     p = sqlparse.parse(' select foo')[0]
     first = p.token_first()