Move repr from JSONDict to _SyncedDict. (#183)

* Move repr from JSONDict to _SyncedDict.

* Add test for repr.

* Update changelog.

changelog.txt

@@ -23,6 +23,7 @@ next
  - Fix: Searches for whole numbers will match all numerically matching integers regardless of whether they are stored as decimals or whole numbers (#169).
  - Fix: Passing an instance of dict to `H5Store.setdefault()` will return an instance of `H5Group` instead of a dict (#180).
  - Improve the representation (return value of `repr()`) of instances of `H5Group`.
+ - Improve the representation (return value of `repr()`) of instances of `SyncedAttrDict`.
 
 
 [1.0.0] -- 2019-02-28

signac/core/jsondict.py

@@ -297,9 +297,6 @@ def _save(self, data=None):
                 with open(self._filename, 'wb') as file:
                     file.write(blob)
 
-    def __repr__(self):
-        return repr(self())
-
     @contextmanager
     def buffered(self):
         buffered_dict = BufferedSyncedAttrDict(self, parent=self)

signac/core/synceddict.py

@@ -257,6 +257,9 @@ def items(self):
         self._synced_load()
         return self._convert_to_dict(self._data).items()
 
+    def __repr__(self):
+        return repr(self())
+
     def __str__(self):
         return str(self())
 

tests/test_synced_attrdict.py

@@ -90,7 +90,11 @@ def test_str(self):
 
     def test_repr(self):
         sad = self.get_sad()
-        repr(sad)
+        self.assertEqual(repr(sad), repr(dict(sad())))
+        sad['a'] = 0
+        self.assertEqual(repr(sad), repr(dict(sad())))
+        sad['a'] = {'b': 0}
+        self.assertEqual(repr(sad), repr(dict(sad())))
 
     def test_call(self):
         sad = self.get_sad()