From e689aec00aa828a5d8dacd4d9931755419c09ea7 Mon Sep 17 00:00:00 2001
From: Melf <cqc@melf.de>
Date: Mon, 4 Mar 2024 10:21:09 +0000
Subject: [PATCH] remove testcases, solve some issues

---
 tests/conftest.py            |  9 +++++++++
 tests/qiskit_backend_test.py | 31 ++++++++++++++++++++++++++++---
 2 files changed, 37 insertions(+), 3 deletions(-)

diff --git a/tests/conftest.py b/tests/conftest.py
index af296a10..0e8bd6d0 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -73,6 +73,15 @@ def brisbane_emulator_backend() -> IBMQEmulatorBackend:
     )
 
 
+@pytest.fixture(scope="module")
+def ibmq_qasm_emulator_backend() -> IBMQEmulatorBackend:
+    return IBMQEmulatorBackend(
+        "ibmq_qasm_simulator",
+        instance="ibm-q/open/main",
+        token=os.getenv("PYTKET_REMOTE_QISKIT_TOKEN"),
+    )
+
+
 @pytest.fixture(scope="module")
 def nairobi_emulator_backend() -> IBMQEmulatorBackend:
     return IBMQEmulatorBackend(
diff --git a/tests/qiskit_backend_test.py b/tests/qiskit_backend_test.py
index 26574934..978e1876 100644
--- a/tests/qiskit_backend_test.py
+++ b/tests/qiskit_backend_test.py
@@ -23,7 +23,8 @@
 from qiskit.providers import JobStatus  # type: ignore
 from qiskit_algorithms import Grover, AmplificationProblem, AlgorithmError  # type: ignore
 from qiskit_aer import Aer  # type: ignore
-
+from qiskit import QuantumCircuit  # type: ignore
+from qiskit_ibm_runtime import QiskitRuntimeService, Session, Sampler  # type: ignore
 from qiskit_ibm_provider import IBMProvider  # type: ignore
 
 from pytket.extensions.qiskit import (
@@ -112,15 +113,17 @@ def test_cancel() -> None:
     assert job.status() in [JobStatus.CANCELLED, JobStatus.DONE]
 
 
+# https://github.com/CQCL/pytket-qiskit/issues/272
+@pytest.mark.xfail(reason="Qiskit sampler not working")
 @pytest.mark.skipif(skip_remote_tests, reason=REASON)
-def test_qiskit_counts(nairobi_emulator_backend: IBMQEmulatorBackend) -> None:
+def test_qiskit_counts(ibmq_qasm_emulator_backend: IBMQEmulatorBackend) -> None:
     num_qubits = 2
     qc = QuantumCircuit(num_qubits)
     qc.h(0)
     qc.cx(0, 1)
     qc.measure_all()
 
-    s = BackendSampler(TketBackend(nairobi_emulator_backend))
+    s = BackendSampler(TketBackend(ibmq_qasm_emulator_backend))
 
     job = s.run([qc], shots=10)
     res = job.result()
@@ -129,6 +132,28 @@ def test_qiskit_counts(nairobi_emulator_backend: IBMQEmulatorBackend) -> None:
     assert all(n in range(4) for n in res.quasi_dists[0].keys())
 
 
+# https://github.com/CQCL/pytket-qiskit/issues/272
+@pytest.mark.xfail(reason="Qiskit sampler not working")
+@pytest.mark.skipif(skip_remote_tests, reason=REASON)
+def test_qiskit_counts_0() -> None:
+    num_qubits = 32
+    qc = QuantumCircuit(num_qubits)
+    qc.h(0)
+    qc.cx(0, 1)
+    qc.measure_all()
+
+    _service = QiskitRuntimeService(
+        channel="ibm_quantum",
+        instance="ibm-q/open/main",
+        token=os.getenv("PYTKET_REMOTE_QISKIT_TOKEN"),
+    )
+    _session = Session(service=_service, backend="ibmq_qasm_simulator")
+
+    sampler = Sampler(session=_session)
+    job = sampler.run(circuits=qc)
+    job.result()
+
+
 def test_architectures() -> None:
     # https://github.com/CQCL/pytket-qiskit/issues/14
     arch_list = [None, Architecture([(0, 1), (1, 2)]), FullyConnected(3)]