Authenticate IBM Quantum account with GH actions to run unit tests

.github/workflows/functional_tests.yaml

@@ -34,6 +34,8 @@ jobs:
         # exit-zero treats all errors as warnings. The GitHub editor is 127 chars wide
         flake8 . --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics
     - name: Test with pytest
+      env:
+        IBM_API_TOKEN: ${{ secrets.IBM_API_TOKEN }}
       run: |
         python -m pytest -m "not skip"
     - name: Install TorchQuantum

test/plugin/test_qiskit_plugins.py

@@ -23,7 +23,6 @@
 """
 
 import random
-
 import numpy as np
 import pytest
 from qiskit.quantum_info import Pauli, Statevector
@@ -40,7 +39,7 @@
 }
 
 
-@pytest.mark.skip
+# @pytest.mark.skip
 def test_expval_observable():
     # seed = 0
     # random.seed(seed)

torchquantum/plugin/qiskit/qiskit_processor.py

@@ -22,13 +22,15 @@
 SOFTWARE.
 """
 
+import os
 import datetime
 import itertools
 
 import numpy as np
 import pathos.multiprocessing as multiprocessing
 import torch
 from qiskit import QuantumCircuit, transpile
+
 from qiskit.exceptions import QiskitError
 from qiskit.transpiler import PassManager
 from qiskit_aer import AerSimulator
@@ -64,7 +66,7 @@ def run_job_worker(data):
             break
         except Exception as e:
             if "Job was cancelled" in str(e):
-                logger.warning(f"Job is cancelled manually.")
+                logger.warning("Job is cancelled manually.")
                 return None
             else:
                 logger.warning(f"Job failed because {e}, rerun now.")
@@ -183,7 +185,10 @@ def qiskit_init(self):
 
         if self.backend is None:
             # initialize now
+            # Retrieve token from environment.
+            token = os.getenv("IBM_API_TOKEN")
             self.provider = get_provider_hub_group_project(
+                token=token,
                 hub=self.hub,
                 group=self.group,
                 project=self.project,