Merge pull request #197 from emarx/master

Fix Exact Sequence to Match Lengths

voluptuous/tests/tests.py

@@ -5,11 +5,22 @@
     Schema, Required, Extra, Invalid, In, Remove, Literal,
     Url, MultipleInvalid, LiteralInvalid, NotIn, Match, Email,
     Replace, Range, Coerce, All, Any, Length, FqdnUrl, ALLOW_EXTRA, PREVENT_EXTRA,
-    validate_schema,
+    validate_schema, ExactSequence
 )
 from voluptuous.humanize import humanize_error
 
 
+def test_exact_sequence():
+    schema = Schema(ExactSequence([int, int]))
+    try:
+        schema([1, 2, 3])
+    except Invalid:
+        assert True
+    else:
+        assert False, "Did not raise Invalid"
+    assert_equal(schema([1, 2]), [1, 2])
+
+
 def test_required():
     """Verify that Required works."""
     schema = Schema({Required('q'): 1})

voluptuous/validators.py

@@ -634,7 +634,7 @@ def __init__(self, validators, **kwargs):
         self._schemas = [Schema(val, **kwargs) for val in validators]
 
     def __call__(self, v):
-        if not isinstance(v, (list, tuple)):
+        if not isinstance(v, (list, tuple)) or len(v) != len(self._schemas):
             raise ExactSequenceInvalid(self.msg)
         try:
             v = type(v)(schema(x) for x, schema in zip(v, self._schemas))