OperatorTensor::forwarDType no longer require in tensor to be defined.

src/operator/OperatorTensor.cpp

@@ -173,7 +173,7 @@ bool Aidge::OperatorTensor::forwardDType(){
     Log::debug("Running default forwardDtype for operator {}",
                     type());
 
-    if (inputsAssociated()) {
+    if (inputsAssociated(false)) {
         const auto expectedDType =  getInput(0)->dataType();
         for (std::size_t i = 1; i < nbInputs(); ++i) {
             if (inputCategory(i) == InputCategory::OptionalParam
@@ -182,7 +182,7 @@ bool Aidge::OperatorTensor::forwardDType(){
                 continue;
             }
             if (expectedDType != getInput(i)->dataType()) {
-                Log::notice("{} operator's inputs should have the same datatype: expected {} (input #0), given {} (input #{})",
+                Log::info("{} operator's inputs should have the same datatype: expected {} (input #0), given {} (input #{})",
                     type(), expectedDType, getInput(i)->dataType(), i);
                 return false;
             }
@@ -194,6 +194,8 @@ bool Aidge::OperatorTensor::forwardDType(){
             mOutputs[o]->setDataType(expectedDType);
         }
         return true;
+    }else{
+        Log::info("Inputs are not associated, fail to forward data types.");
     }
 
     return false;