Fixed tests and added a bunch of things (that were tested but did not…

… exist)

deap/base.py

@@ -268,3 +268,91 @@ def __repr__(self):
         """Return the Python code to build a copy of the object."""
         return "%s.%s(%r)" % (self.__module__, self.__class__.__name__,
                               self.values if self.valid else tuple())
+
+
+def _violates_constraint(fitness):
+    return not fitness.valid \
+        and fitness.constraint_violation is not None \
+        and sum(fitness.constraint_violation) > 0
+
+
+class ConstrainedFitness(Fitness):
+    def __init__(self, values=(), constraint_violation=None):
+        super(ConstrainedFitness, self).__init__(values)
+        self.constraint_violation = constraint_violation
+
+    @Fitness.values.deleter
+    def values(self):
+        self.wvalues = ()
+        self.constraint_violation = None
+
+    def __gt__(self, other):
+        return not self.__le__(other)
+
+    def __ge__(self, other):
+        return not self.__lt__(other)
+
+    def __le__(self, other):
+        self_violates_constraints = _violates_constraint(self)
+        other_violates_constraints = _violates_constraint(other)
+
+        if self_violates_constraints and other_violates_constraints:
+            return True
+        elif self_violates_constraints:
+            return True
+        elif other_violates_constraints:
+            return False
+
+        return self.wvalues <= other.wvalues
+
+    def __lt__(self, other):
+        self_violates_constraints = _violates_constraint(self)
+        other_violates_constraints = _violates_constraint(other)
+
+        if self_violates_constraints and other_violates_constraints:
+            return False
+        elif self_violates_constraints:
+            return True
+        elif other_violates_constraints:
+            return False
+
+        return self.wvalues < other.wvalues
+
+    def __eq__(self, other):
+        self_violates_constraints = _violates_constraint(self)
+        other_violates_constraints = _violates_constraint(other)
+
+        if self_violates_constraints and other_violates_constraints:
+            return True
+        elif self_violates_constraints:
+            return False
+        elif other_violates_constraints:
+            return False
+
+        return self.wvalues == other.wvalues
+
+    def __ne__(self, other):
+        return not self.__eq__(other)
+
+    def dominates(self, other):
+        self_violates_constraints = _violates_constraint(self)
+        other_violates_constraints = _violates_constraint(other)
+
+        if self_violates_constraints and other_violates_constraints:
+            return False
+        elif self_violates_constraints:
+            return False
+        elif other_violates_constraints:
+            return True
+
+        return super(ConstrainedFitness, self).dominates(other)
+
+    def __str__(self):
+        """Return the values of the Fitness object."""
+        return str((self.values if self.valid else tuple(), self.constraint_violation))
+
+    def __repr__(self):
+        """Return the Python code to build a copy of the object."""
+        return "%s.%s(%r, %r)" % (self.__module__, self.__class__.__name__,
+                                  self.values if self.valid else tuple(),
+                                  self.constraint_violation)