Bump types test coverage

Author: waveform80

tests/test_types.py

@@ -666,17 +666,19 @@ def test_num_repr():
     ))), pattern=(Int, 1, 0))
     assert str(pattern) == 'int seconds since 1970-01-01 of datetime range=1970-01-01 00:00:00..1970-01-02 00:00:00'
     assert xml(pattern).tag == 'intof'
-    pattern = NumRepr(DateTime(Counter((
+    ctr = Counter((
         dt.datetime.utcfromtimestamp(0.0),
         dt.datetime.utcfromtimestamp(1.0),
         dt.datetime.utcfromtimestamp(86400.0),
-    ))), pattern=(Float, 1, 0))
+    ))
+    pattern = NumRepr(DateTime(ctr), pattern=(Float, 1, 0))
     assert str(pattern) == 'float seconds since 1970-01-01 of datetime range=1970-01-01 00:00:00..1970-01-02 00:00:00'
     assert xml(pattern).tag == 'floatof'
     assert pattern == pattern + pattern
     assert pattern + pattern == pattern
     assert pattern != Int(Counter((1, 2, 3)))
-
+    with pytest.raises(AssertionError):
+        str(NumRepr(DateTime(ctr), pattern=(Str, 1, 0)))
 
 def test_int():
     data = {1, 2, 3, 1000}
@@ -809,6 +811,7 @@ def test_datetime_numrepr():
     numbers = Int(Counter(d.timestamp() for d in data))
     pattern = DateTime.from_numbers(numbers)
     assert pattern == NumRepr(DateTime(Counter(data)), pattern=(Int, 1, 0))
+    assert pattern != NumRepr(DateTime(Counter(data)), pattern=(Int, 2, 1))
     pattern.validate(1000)
     with pytest.raises(TypeError):
         pattern.validate('1000')
@@ -833,6 +836,8 @@ def test_datetime_numrepr_epoch():
     pattern = DateTime.from_numbers(numbers, offset, scale)
     assert pattern == NumRepr(DateTime(Counter(data)),
                               pattern=(Int, scale, offset))
+    assert pattern != NumRepr(DateTime(Counter(data)),
+                              pattern=(Int, 1, 0))
     pattern.validate(20000)
     with pytest.raises(TypeError):
         pattern.validate('20000')