Add BackendV2 mocked backend (Qiskit/qiskit#7643)

HuangJunye · mtreinish · rathishcholarajan · web-flow · commit dc286d298973 · 2022-03-31T00:46:23.000Z
* Add backend converter script from Matthew Co-Authored-By: Matthew Treinish <mtreinish@kortar.org> * FakeBackendV2, FakeQasmBeckendV2, FakeJakartaV2 in progress * Temporary fix for circular import * First try of implementing FakeJakartaV2 based on FakeQasmBackendV2/FakeBackendV2 * Implement FakeQasmBackend methods into FakeBackendV2 * Implement FakePulseBackend methods into FakeBackendV2 * Import missing PulseDefaults and adjust _get_conf_from_json method position * Adjust _get_config_from_dict method position * Fix target property Need to take closer look at _convert_to_target method * Fix _default_options method * Add FakeProviderV2 for V2 fake backends * Remove FakeQasmBackendV2 class * Copy run method from FakeBackendV1 * change configuration to self._configuration * Update backend_converter.py Based on the latest version on Qiskit/qiskit-ibm-runtime#102 Co-Authored-By: Rathish Cholarajan <rathishc24@gmail.com> * @rathishcholarajan Use BackendConfiguration, BackendProperties and PulseDefaults classes for convert_to_target * Add dtm * Add qubit properties * Add drive, measure and acquire channels. * Fix test_fake_backends * Fix ConfigurableFakeBackend circular import problem * Fix configurable_backend circular import problem * FakeAlmadenV2 * FakeArmonkV2 * FakeAthensV2 * FakeBelemV2 * FakeBoeblingenV2 * Add fake backends (except rueschlikon, tenerife and tokyo) * import fake v2 backends in __init__.py * add fake backends to mock.backend.__init__ and fake provider * Fix typos * Add defs files to manila, poughkeepsie, rome and santiago * Fix FakeCambridgeV2 * Add Hanoi and Kolkata to FakeProviderV2 * Handle no pulse backends in V2 * Fix getting qubit properties from properties bug * Fix _parse_inst_map for BackendV2 with no pulse support * Revert "Update backend_converter.py" This reverts commit 2438935d218bf3e1059bef185d77c426cc0978d3. * Revert " @rathishcholarajan Use BackendConfiguration, BackendProperties and PulseDefaults classes for convert_to_target" This reverts commit eec4a49f590399c15a90c4579844009cc9d0dc20. * Use dicts instead of conf, props, defs objects * remove channels * add type hints * Use dict.get instead of brackets * clean up backend_converter.py * construct target using defs files if it exist * Fix typo in target.acquire_alignment * Handle BackendV2 in transpiler._parse_inst_map * Comment out backends in fake provider and Aer run method for testing * undo typo fix for target.acquire_alignment * Revert "Comment out backends in fake provider and Aer run method for testing" This reverts commit 2127b345b63e9dea1bbdbd44b397f1d14089213b. * Copy NoiseModel.from_backend() method from Aer * modify NoiseModel.from_backend method to support V2 backend * Build V2 backend noise model from self._props_dict * black reformatting * Move V2 backend code to above V1 and Legacy * Clean up FakeBackendV2 for testing * Order FakeBackendV2 to match BackendV2 * Uncomment out fake backends from fake provider v1 and fake legacy provider * Remove unused imports * Remove FakeTokyoV2 import * Remove warnings for missing conf, props and defs files * Remove lazy loading of target * Remove lazy loading of qubit properties * Remove deprecation warning for standard_gates option in noise model * linting for fake_backend.py * linting for backend_converter.py * fix `Redefining name 'warnings' from outer scope` error * lint: rename qubit_props_dict_from_props_dict * Raise error for pulse simulation * remove warnings flag * Move V2 to in front of V1 * revert changes in transpiler._parse_inst_map The changes are now in a separate PR: Qiskit/qiskit#7765 * remove warnings flag * fix 'no-else-raise' error * Add docstring to FakeBackendV2 * rename `kwargs` to `options` in .run method following BackendV2 * Update qiskit/test/mock/fake_backend.py Co-authored-by: Matthew Treinish <mtreinish@kortar.org> * Update qiskit/test/mock/fake_backend.py Co-authored-by: Matthew Treinish <mtreinish@kortar.org> * Update qiskit/test/mock/fake_backend.py Co-authored-by: Matthew Treinish <mtreinish@kortar.org> * rearrange raising error for pulse job * Add a TODO comment for removing PulseDefaults * fix typo * black reformat * Add release note. * Fix no else raise error * Add blank new line in release note * black formatting * fix release note missing black tick * Rename FakeProviderV2 to FakeProviderForBackendV2 * Re-export FakeProviderForBackendV2 to qiskit.providers.fake_provider * black reformatting Co-authored-by: Matthew Treinish <mtreinish@kortar.org> Co-authored-by: Rathish Cholarajan <rathishc24@gmail.com> Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>
diff --git a/test/integration/test_fake_backends.py b/test/integration/test_fake_backends.py
@@ -24,10 +24,10 @@
 from qiskit.exceptions import QiskitError
 from qiskit.execute_function import execute
 from qiskit.test.base import QiskitTestCase
-from qiskit.test.mock import FakeProvider, FakeLegacyProvider
+from qiskit.test.mock import FakeProviderForBackendV2, FakeProvider, FakeLegacyProvider
 from qiskit.utils import optionals
 
-
+FAKE_PROVIDER_FOR_BACKEND_V2 = FakeProviderForBackendV2()
 FAKE_PROVIDER = FakeProvider()
 FAKE_LEGACY_PROVIDER = FakeLegacyProvider()
 
@@ -46,6 +46,25 @@ def setUpClass(cls):
         cls.circuit.x(1)
         cls.circuit.measure_all()
 
+    @combine(
+        backend=[be for be in FAKE_PROVIDER_FOR_BACKEND_V2.backends() if be.num_qubits > 1],
+        optimization_level=[0, 1, 2, 3],
+    )
+    def test_circuit_on_fake_backend_v2(self, backend, optimization_level):
+        if not optionals.HAS_AER and backend.num_qubits > 20:
+            self.skipTest("Unable to run fake_backend %s without qiskit-aer" % backend.backend_name)
+        job = execute(
+            self.circuit,
+            backend,
+            optimization_level=optimization_level,
+            seed_simulator=42,
+            seed_transpiler=42,
+        )
+        result = job.result()
+        counts = result.get_counts()
+        max_count = max(counts.items(), key=operator.itemgetter(1))[0]
+        self.assertEqual(max_count, "11")
+
     @combine(
         backend=[be for be in FAKE_PROVIDER.backends() if be.configuration().num_qubits > 1],
         optimization_level=[0, 1, 2, 3],
