Path too long error (#29)

* 🐛 if a qasm str is inserted it is checked for being a file path and led to an error because the str was too long for a path

* test

* 🐛 fixed a conversion from Path to str for the length check

Author: nquetschlich

src/mqt/predictor/driver.py

@@ -297,7 +297,7 @@ def generate_training_sample(
         if num_not_empty_entries == 0:
             return False
 
-        feature_vec = utils.create_feature_dict(Path(source_path) / file)
+        feature_vec = utils.create_feature_dict(str(Path(source_path) / file))
         training_sample = (list(feature_vec.values()), np.argmax(scores))
         circuit_name = file.split(".")[0]
 

src/mqt/predictor/utils.py

@@ -302,7 +302,7 @@ def init_all_config_files():
 
 def create_feature_dict(qasm_str_or_path: str):
 
-    if Path(qasm_str_or_path).exists():
+    if len(qasm_str_or_path) < 260 and Path(qasm_str_or_path).exists():
         qc = QuantumCircuit.from_qasm_file(qasm_str_or_path)
     elif "OPENQASM" in qasm_str_or_path:
         qc = QuantumCircuit.from_qasm_str(qasm_str_or_path)

tests/test_driver.py

@@ -20,10 +20,13 @@ def test_predict(mock_show):
     path = resources.files("mqt.predictor") / "trained_clf.joblib"
     assert path.is_file()
     filename = "test_qasm.qasm"
-    benchmark_generator.get_one_benchmark("dj", 1, 8).qasm(filename=filename)
+    qc = benchmark_generator.get_one_benchmark("dj", 1, 8)
+    qc.qasm(filename=filename)
     predictor = Predictor()
     prediction = predictor.predict(filename)
     assert prediction >= 0 and prediction < len(utils.get_index_to_comppath_LUT())
+    prediction = predictor.predict(qc.qasm())
+    assert prediction >= 0 and prediction < len(utils.get_index_to_comppath_LUT())
     prediction = predictor.predict("fail test")
     assert not prediction