[Entanglement] Throw errors if validation is skipped

...per feedback from nasa/openmctweb#98

platform/entanglement/src/services/CopyService.js

@@ -64,6 +64,12 @@ define(
                 return self.perform(domainObject, parent);
             }
 
+            if (!this.validate(domainObject, parent)) {
+                throw new Error(
+                    "Tried to copy objects without validating first."
+                );
+            }
+
             if (domainObject.hasCapability('composition')) {
                 model.composition = [];
             }

platform/entanglement/src/services/LinkService.js

@@ -53,15 +53,18 @@ define(
         };
 
         LinkService.prototype.perform = function (object, parentObject) {
-            // It is assumed here that validate has been called, and therefore
+            if (!this.validate(object, parentObject)) {
-            // that parentObject.hasCapability('composition').
+                throw new Error(
-            var composition = parentObject.getCapability('composition');
+                    "Tried to link objects without validating first."
+                );
+            }
 
-            return composition.add(object).then(function (objectInNewContext) {
+            return parentObject.getCapability('composition').add(object)
-                return parentObject.getCapability('persistence')
+                .then(function (objectInNewContext) {
-                    .persist()
+                    return parentObject.getCapability('persistence')
-                    .then(function () { return objectInNewContext; });
+                        .persist()
-            });
+                        .then(function () { return objectInNewContext; });
+                });
         };
 
         return LinkService;

platform/entanglement/src/services/MoveService.js

@@ -82,6 +82,12 @@ define(
                 }
             }
 
+            if (!this.validate(object, parentObject)) {
+                throw new Error(
+                    "Tried to move objects without validating first."
+                );
+            }
+
             return this.linkService
                 .perform(object, parentObject)
                 .then(relocate)