Add transpiler tests (#1323)

* Add transpiler tests

* remove qiskittestcase

test/unit/transpiler/__init__.py

@@ -0,0 +1,11 @@
+# This code is part of Qiskit.
+#
+# (C) Copyright IBM 2024.
+#
+# This code is licensed under the Apache License, Version 2.0. You may
+# obtain a copy of this license in the LICENSE.txt file in the root directory
+# of this source tree or at http://www.apache.org/licenses/LICENSE-2.0.
+#
+# Any modifications or derivative works of this code must retain this
+# copyright notice, and modified files need to carry a notice indicating
+# that they have been altered from the originals.

test/unit/transpiler/passes/__init__.py

@@ -0,0 +1,11 @@
+# This code is part of Qiskit.
+#
+# (C) Copyright IBM 2024.
+#
+# This code is licensed under the Apache License, Version 2.0. You may
+# obtain a copy of this license in the LICENSE.txt file in the root directory
+# of this source tree or at http://www.apache.org/licenses/LICENSE-2.0.
+#
+# Any modifications or derivative works of this code must retain this
+# copyright notice, and modified files need to carry a notice indicating
+# that they have been altered from the originals.

test/unit/transpiler/passes/basis/__init__.py

@@ -0,0 +1,11 @@
+# This code is part of Qiskit.
+#
+# (C) Copyright IBM 2024.
+#
+# This code is licensed under the Apache License, Version 2.0. You may
+# obtain a copy of this license in the LICENSE.txt file in the root directory
+# of this source tree or at http://www.apache.org/licenses/LICENSE-2.0.
+#
+# Any modifications or derivative works of this code must retain this
+# copyright notice, and modified files need to carry a notice indicating
+# that they have been altered from the originals.

test/unit/transpiler/passes/basis/test_convert_id_to_delay.py

@@ -0,0 +1,99 @@
+# This code is part of Qiskit.
+#
+# (C) Copyright IBM 2024.
+#
+# This code is licensed under the Apache License, Version 2.0. You may
+# obtain a copy of this license in the LICENSE.txt file in the root directory
+# of this source tree or at http://www.apache.org/licenses/LICENSE-2.0.
+#
+# Any modifications or derivative works of this code must retain this
+# copyright notice, and modified files need to carry a notice indicating
+# that they have been altered from the originals.
+
+"""Test the conversion of Id gate operations to a delay."""
+
+from qiskit.circuit import QuantumCircuit
+from qiskit.transpiler.passmanager import PassManager
+
+from qiskit_ibm_runtime.transpiler.passes.basis.convert_id_to_delay import (
+    ConvertIdToDelay,
+)
+
+from qiskit_ibm_runtime.transpiler.passes.scheduling.utils import (
+    DynamicCircuitInstructionDurations,
+)
+
+from .....ibm_test_case import IBMTestCase
+
+# pylint: disable=invalid-name
+
+
+class TestConvertIdToDelay(IBMTestCase):
+    """Tests the ConvertIdToDelay pass"""
+
+    def setUp(self):
+        """Setup."""
+        super().setUp()
+
+        self.durations = DynamicCircuitInstructionDurations([("sx", None, 160), ("x", None, 200)])
+
+    def test_id_gate(self):
+        """Test if Id gate is converted a delay."""
+        qc = QuantumCircuit(1, 0)
+        qc.id(0)
+
+        pm = PassManager([ConvertIdToDelay(self.durations)])
+        transformed = pm.run(qc)
+
+        expected = QuantumCircuit(1, 0)
+        expected.delay(160, 0)
+
+        self.assertEqual(expected, transformed)
+
+    def test_id_gate_unit(self):
+        """Test if Id gate is converted a delay with correct units."""
+        qc = QuantumCircuit(1, 0)
+        qc.id(0)
+
+        pm = PassManager([ConvertIdToDelay(self.durations, "x")])
+        transformed = pm.run(qc)
+
+        expected = QuantumCircuit(1, 0)
+        expected.delay(200, 0)
+
+        self.assertEqual(expected, transformed)
+
+    def test_c_if_id_gate(self):
+        """Test if c_if Id gate is converted a c_if delay."""
+        qc = QuantumCircuit(1, 1)
+
+        with qc.if_test((0, 1)):  # pylint: disable=not-context-manager
+            qc.id(0)
+
+        pm = PassManager([ConvertIdToDelay(self.durations)])
+        transformed = pm.run(qc)
+
+        expected = QuantumCircuit(1, 1)
+        with expected.if_test((0, 1)):  # pylint: disable=not-context-manager
+            expected.delay(160, 0)
+
+        self.assertEqual(expected, transformed)
+
+    def test_if_test_id_gate(self):
+        """Test if if_test Id gate is converted a if_test delay."""
+        qc = QuantumCircuit(1, 1)
+        with qc.if_test((0, 1)) as else_:  # pylint: disable=not-context-manager
+            qc.id(0)
+        with else_:  # pylint: disable=not-context-manager
+            qc.id(0)
+
+        pm = PassManager([ConvertIdToDelay(self.durations)])
+        transformed = pm.run(qc)
+
+        expected = QuantumCircuit(1, 1)
+        with expected.if_test((0, 1)) as else_:  # pylint: disable=not-context-manager
+            expected.delay(160, 0)
+        with else_:
+            expected.delay(160, 0)
+
+        self.assertEqual(expected, transformed)

test/unit/transpiler/passes/scheduling/__init__.py

@@ -0,0 +1,11 @@
+# This code is part of Qiskit.
+#
+# (C) Copyright IBM 2024.
+#
+# This code is licensed under the Apache License, Version 2.0. You may
+# obtain a copy of this license in the LICENSE.txt file in the root directory
+# of this source tree or at http://www.apache.org/licenses/LICENSE-2.0.
+#
+# Any modifications or derivative works of this code must retain this
+# copyright notice, and modified files need to carry a notice indicating
+# that they have been altered from the originals.

test/unit/transpiler/passes/scheduling/control_flow_test_case.py

@@ -0,0 +1,36 @@
+# This code is part of Qiskit.
+#
+# (C) Copyright IBM 2022, 2023.
+#
+# This code is licensed under the Apache License, Version 2.0. You may
+# obtain a copy of this license in the LICENSE.txt file in the root directory
+# of this source tree or at http://www.apache.org/licenses/LICENSE-2.0.
+#
+# Any modifications or derivative works of this code must retain this
+# copyright notice, and modified files need to carry a notice indicating
+# that they have been altered from the originals.
+
+"""Enhanced test case for control flow circuits."""
+
+from typing import Any, Optional
+
+from qiskit import QuantumCircuit
+from qiskit.test._canonical import canonicalize_control_flow
+
+from .....ibm_test_case import IBMTestCase
+
+
+class ControlFlowTestCase(IBMTestCase):
+    """Test case that enforces control flow canonicalization of quantum circuits."""
+
+    def assertEqual(  # pylint: disable=arguments-differ
+        self, first: Any, second: Any, msg: Optional[str] = None
+    ) -> None:
+        """Modify assertEqual to canonicalize the quantum circuit."""
+        if isinstance(first, QuantumCircuit):
+            first = canonicalize_control_flow(first)
+
+        if isinstance(second, QuantumCircuit):
+            second = canonicalize_control_flow(second)
+
+        super().assertEqual(first, second, msg=msg)  # pylint: disable=no-value-for-parameter