Commit 6ee0a8a3 authored by Nguyen, Thien Minh's avatar Nguyen, Thien Minh
Browse files

Attempts to fix sporadic segfault on exit 



- Split the python JIT test into multiple files per category (simple, nested, or decompose) so that we can debug easily.

- Explicitly clear the QJIT python cache on exit.

Signed-off-by: default avatarThien Nguyen <nguyentm@ornl.gov>
parent e839afbb

python/qcor.in.py

+4 −1
Original line number Diff line number Diff line 
import sys

import sys,  atexit



if '@QCOR_APPEND_PLUGIN_PATH@':

    sys.argv += ['__internal__add__plugin__path', '@QCOR_APPEND_PLUGIN_PATH@']
@@ -24,6 +24,9 @@ MethodType = types.MethodType 
# i.e. multiple kernels all declared in global scope don't have this issue.

# Hence, to be safe, we cache all the QJIT objects ever created until QCOR module is unloaded.

QJIT_OBJ_CACHE = []

@atexit.register

def clear_qjit_cache():

    QJIT_OBJ_CACHE = []



PauliOperator = xacc.quantum.PauliOperator

FermionOperator = xacc.quantum.FermionOperator

python/tests/CMakeLists.txt

+17 −3
Original line number Diff line number Diff line
@@ -5,11 +5,25 @@ add_test (NAME qcor_quasimo_python_bindings 
set_tests_properties(qcor_quasimo_python_bindings

    PROPERTIES ENVIRONMENT "PYTHONPATH=${CMAKE_INSTALL_PREFIX}:$ENV{PYTHONPATH}")



add_test (NAME qcor_simple_kernel_jit_python

 COMMAND ${Python_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/test_kernel_jit.py 

add_test (NAME qcor_python_jit_simple

 COMMAND ${Python_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/test_jit_simple.py 

 WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}

)

set_tests_properties(qcor_simple_kernel_jit_python

set_tests_properties(qcor_python_jit_simple

   PROPERTIES ENVIRONMENT "PYTHONPATH=${CMAKE_INSTALL_PREFIX}:$ENV{PYTHONPATH}")



add_test (NAME qcor_python_jit_nested_kernels

 COMMAND ${Python_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/test_jit_nested.py 

 WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}

)

set_tests_properties(qcor_python_jit_nested_kernels

   PROPERTIES ENVIRONMENT "PYTHONPATH=${CMAKE_INSTALL_PREFIX}:$ENV{PYTHONPATH}")



add_test (NAME qcor_python_jit_decompose

 COMMAND ${Python_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/test_jit_decompose.py 

 WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}

)

set_tests_properties(qcor_python_jit_decompose

   PROPERTIES ENVIRONMENT "PYTHONPATH=${CMAKE_INSTALL_PREFIX}:$ENV{PYTHONPATH}")



add_test (NAME qcor_test_qcor_spec_api

python/tests/test_jit_decompose.py

0 → 100644
+170 −0
Original line number Diff line number Diff line 
import unittest

from qcor import *

# Import Python math with alias

import math as myMathMod



# Some global variables for testing

MY_PI = 3.1416

class TestKernelJIT(unittest.TestCase):

    def test_as_unitary(self):

        try:

           import numpy as np

        except:

            print('No numpy, cant run test_as_unitary')

            return

        

        @qjit

        def dansatz(q : qreg, x : float):

            X(q[0])

            Ry(q[1], x)

            CX(q[1], q[0])

        

        u_mat = dansatz.as_unitary_matrix(qalloc(2), .59)



        H = -2.1433 * X(0) * X(1) - 2.1433 * \

            Y(0) * Y(1) + .21829 * Z(0) - 6.125 * Z(1) + 5.907

        Hmat = H.to_numpy()



        # Compute |psi> = U |0>

        zero_state = np.array([1., 0., 0., 0.])

        final_state = np.dot(u_mat, np.transpose(zero_state))

        # Compute E = <psi| H |psi>

        energy = np.dot(final_state, np.dot(Hmat,final_state))

        print(energy)

        self.assertAlmostEqual(energy, -1.74, places=1)



    def test_rewrite_decompose(self):

        try:

           import numpy as np

        except:

            print('No numpy, cant run test_rewrite_decompose')

            return



        set_qpu('qpp', {'shots':1024})

        @qjit

        def foo(q : qreg):

            for i in range(q.size()):

                X(q[i])

            

            with decompose(q) as ccnot:

                ccnot = np.eye(8)

                ccnot[6,6] = 0.0

                ccnot[7,7] = 0.0

                ccnot[6,7] = 1.0

                ccnot[7,6] = 1.0

            

            for i in range(q.size()):

                Measure(q[i])



        print(foo.src)

        q = qalloc(3)

        foo(q)

        counts = q.counts()

        self.assertTrue('110' in counts)

        self.assertTrue(counts['110'] == 1024)



        @qjit

        def all_x(q : qreg):

            with decompose(q) as x_kron:

                sx = np.array([[0, 1],[1, 0]])

                x_kron = np.kron(np.kron(sx,sx),sx)

            

            for i in range(q.size()):

                Measure(q[i])



        print(all_x.src)

        q = qalloc(3)

        all_x(q)

        counts = q.counts()

        print(counts)

        self.assertTrue('111' in counts)

        self.assertTrue(counts['111'] == 1024)



        @qjit

        def try_two_decompose(q : qreg):

            for i in range(q.size()):

                X(q[i])

            

            with decompose(q) as ccnot:

                ccnot = numpy.eye(8)

                ccnot[6,6] = 0.0

                ccnot[7,7] = 0.0

                ccnot[6,7] = 1.0

                ccnot[7,6] = 1.0



            # should have 110

            with decompose(q) as x_kron:

                sx = np.array([[0, 1],[1, 0]])

                x_kron = np.kron(np.kron(sx,sx),sx)

            

            # Should have flipped the bits

            for i in range(q.size()):

                Measure(q[i])



        print(try_two_decompose.src)

        q = qalloc(3)

        try_two_decompose(q)

        counts = q.counts()

        print(counts)

        self.assertTrue('001' in counts)

        self.assertTrue(counts['001'] == 1024)

    

    def test_more_decompose(self):

        try:

           import numpy as np

        except:

            print('No numpy, cant run test_more_decompose')

            return



        set_qpu('qpp', {'shots':1024})

       

        @qjit

        def random_2qbit(q : qreg):

            with decompose(q, kak) as random_unitary:

                a = np.random.rand(4,4)

                qm, r = np.linalg.qr(a, mode='complete')

                random_unitary = qm

            

            for i in range(q.size()):

                Measure(q[i])

        

        print(random_2qbit.src)

        q = qalloc(2)

        print(random_2qbit.extract_composite(q).toString())

        

        @qjit

        def random_1qbit(q : qreg):

            with decompose(q, z_y_z) as random_unitary:

                random_unitary, _ = np.linalg.qr(np.random.rand(2,2), mode='complete')

            

            for i in range(q.size()):

                Measure(q[i])

        

        print(random_1qbit.get_internal_src())

        q = qalloc(2)

        print(random_1qbit.get_syntax_handler_src())

        print(random_1qbit.extract_composite(q).toString())



    # def test_decompose_param(self):

    #     set_qpu('qpp')

    #     @qjit

    #     def ansatz(q : qreg, x : List[float]):

    #         X(q[0])

    #         with decompose(q, kak) as u:

    #             from scipy.sparse.linalg import expm

    #             from openfermion.ops import QubitOperator

    #             from openfermion.transforms import get_sparse_operator

    #             qop = QubitOperator('X0 Y1') - QubitOperator('Y0 X1')

    #             qubit_sparse = get_sparse_operator(qop)

    #             u = expm(0.5j * x[0] * qubit_sparse).todense()



    #     H = -2.1433 * X(0) * X(1) - 2.1433 * \

    #         Y(0) * Y(1) + .21829 * Z(0) - 6.125 * Z(1) + 5.907

    #     o = createObjectiveFunction(ansatz, H, 1, {'gradient-strategy':'central', 'step':1e-1})

    #     opt = createOptimizer('nlopt', {'initial-parameters':[.5], 'maxeval':10, 'algorithm':'l-bfgs'})

    #     results = opt.optimize(o)

    #     print("WE ARE DONE")

    #     self.assertAlmostEqual(results[0], -1.74, places=1)



if __name__ == '__main__':

  unittest.main()
 
 No newline at end of file

python/tests/test_kernel_jit.py→python/tests/test_jit_nested.py

+206 −0
Original line number Diff line number Diff line
@@ -6,303 +6,6 @@ import math as myMathMod 
# Some global variables for testing

MY_PI = 3.1416

class TestKernelJIT(unittest.TestCase):

    def test_as_unitary(self):

        try:

           import numpy as np

        except:

            print('No numpy, cant run test_as_unitary')

            return

        

        @qjit

        def dansatz(q : qreg, x : float):

            X(q[0])

            Ry(q[1], x)

            CX(q[1], q[0])

        

        u_mat = dansatz.as_unitary_matrix(qalloc(2), .59)



        H = -2.1433 * X(0) * X(1) - 2.1433 * \

            Y(0) * Y(1) + .21829 * Z(0) - 6.125 * Z(1) + 5.907

        Hmat = H.to_numpy()



        # Compute |psi> = U |0>

        zero_state = np.array([1., 0., 0., 0.])

        final_state = np.dot(u_mat, np.transpose(zero_state))

        # Compute E = <psi| H |psi>

        energy = np.dot(final_state, np.dot(Hmat,final_state))

        print(energy)

        self.assertAlmostEqual(energy, -1.74, places=1)



    def test_rewrite_decompose(self):

        try:

           import numpy as np

        except:

            print('No numpy, cant run test_rewrite_decompose')

            return



        set_qpu('qpp', {'shots':1024})

        @qjit

        def foo(q : qreg):

            for i in range(q.size()):

                X(q[i])

            

            with decompose(q) as ccnot:

                ccnot = np.eye(8)

                ccnot[6,6] = 0.0

                ccnot[7,7] = 0.0

                ccnot[6,7] = 1.0

                ccnot[7,6] = 1.0

            

            for i in range(q.size()):

                Measure(q[i])



        print(foo.src)

        q = qalloc(3)

        foo(q)

        counts = q.counts()

        self.assertTrue('110' in counts)

        self.assertTrue(counts['110'] == 1024)



        @qjit

        def all_x(q : qreg):

            with decompose(q) as x_kron:

                sx = np.array([[0, 1],[1, 0]])

                x_kron = np.kron(np.kron(sx,sx),sx)

            

            for i in range(q.size()):

                Measure(q[i])



        print(all_x.src)

        q = qalloc(3)

        all_x(q)

        counts = q.counts()

        print(counts)

        self.assertTrue('111' in counts)

        self.assertTrue(counts['111'] == 1024)



        @qjit

        def try_two_decompose(q : qreg):

            for i in range(q.size()):

                X(q[i])

            

            with decompose(q) as ccnot:

                ccnot = numpy.eye(8)

                ccnot[6,6] = 0.0

                ccnot[7,7] = 0.0

                ccnot[6,7] = 1.0

                ccnot[7,6] = 1.0



            # should have 110

            with decompose(q) as x_kron:

                sx = np.array([[0, 1],[1, 0]])

                x_kron = np.kron(np.kron(sx,sx),sx)

            

            # Should have flipped the bits

            for i in range(q.size()):

                Measure(q[i])



        print(try_two_decompose.src)

        q = qalloc(3)

        try_two_decompose(q)

        counts = q.counts()

        print(counts)

        self.assertTrue('001' in counts)

        self.assertTrue(counts['001'] == 1024)

    

    def test_more_decompose(self):

        try:

           import numpy as np

        except:

            print('No numpy, cant run test_more_decompose')

            return



        set_qpu('qpp', {'shots':1024})

       

        @qjit

        def random_2qbit(q : qreg):

            with decompose(q, kak) as random_unitary:

                a = np.random.rand(4,4)

                qm, r = np.linalg.qr(a, mode='complete')

                random_unitary = qm

            

            for i in range(q.size()):

                Measure(q[i])

        

        print(random_2qbit.src)

        q = qalloc(2)

        print(random_2qbit.extract_composite(q).toString())

        

        @qjit

        def random_1qbit(q : qreg):

            with decompose(q, z_y_z) as random_unitary:

                random_unitary, _ = np.linalg.qr(np.random.rand(2,2), mode='complete')

            

            for i in range(q.size()):

                Measure(q[i])

        

        print(random_1qbit.get_internal_src())

        q = qalloc(2)

        print(random_1qbit.get_syntax_handler_src())

        print(random_1qbit.extract_composite(q).toString())



    # def test_decompose_param(self):

    #     set_qpu('qpp')

    #     @qjit

    #     def ansatz(q : qreg, x : List[float]):

    #         X(q[0])

    #         with decompose(q, kak) as u:

    #             from scipy.sparse.linalg import expm

    #             from openfermion.ops import QubitOperator

    #             from openfermion.transforms import get_sparse_operator

    #             qop = QubitOperator('X0 Y1') - QubitOperator('Y0 X1')

    #             qubit_sparse = get_sparse_operator(qop)

    #             u = expm(0.5j * x[0] * qubit_sparse).todense()



    #     H = -2.1433 * X(0) * X(1) - 2.1433 * \

    #         Y(0) * Y(1) + .21829 * Z(0) - 6.125 * Z(1) + 5.907

    #     o = createObjectiveFunction(ansatz, H, 1, {'gradient-strategy':'central', 'step':1e-1})

    #     opt = createOptimizer('nlopt', {'initial-parameters':[.5], 'maxeval':10, 'algorithm':'l-bfgs'})

    #     results = opt.optimize(o)

    #     print("WE ARE DONE")

    #     self.assertAlmostEqual(results[0], -1.74, places=1)



    def test_simple_bell(self):



        set_qpu('qpp', {'shots':1024})



        @qjit

        def bell(q : qreg):

            H(q[0])

            CX(q[0], q[1])

            for i in range(q.size()):

                Measure(q[i])



        # Allocate 2 qubits

        q = qalloc(2)



        # Run the bell experiment

        bell(q)



        # Print the results

        q.print()

        self.assertAlmostEqual(q.exp_val_z(), 1.0, places=1)

        counts = q.counts()

        self.assertEqual(len(counts), 2)

        self.assertTrue('00' in counts)

        self.assertTrue('11' in counts)



    def test_assignment(self):



        set_qpu('qpp', {'shots':1024})



        @qjit

        def varAssignKernel(q : qreg):

            # Simple value assignment

            angle = 3.14/4.0

            Rx(q[0], angle)

            CX(q[0], q[1])

            for i in range(q.size()):

                Measure(q[i])



        # Allocate 2 qubits

        q = qalloc(2)



        # Run the bell experiment

        varAssignKernel(q)



        # Print the results

        q.print()

        counts = q.counts()

        self.assertEqual(len(counts), 2)

        self.assertTrue('00' in counts)

        self.assertTrue('11' in counts)

        # Angle less than Pi/2 => 00 more than 11

        self.assertTrue(counts['00'] > counts['11'])

    

    def test_globalVar(self):



        set_qpu('qpp', {'shots':1024})



        @qjit

        def kernelUseGlobals(q : qreg):

            Rx(q[0], MY_PI)

            CX(q[0], q[1])

            for i in range(q.size()):

                Measure(q[i])



        # Allocate 2 qubits

        q = qalloc(2)



        # Run the bell experiment

        kernelUseGlobals(q)



        # Print the results

        q.print()

        counts = q.counts()

        # Pi pulse -> X gate

        self.assertTrue(counts['11'] > 1000)

    

    def test_ModuleConstants(self):



        set_qpu('qpp', {'shots':1024})



        @qjit

        def kernelUseConstants(q : qreg):

            # Use math.pi constant

            Rx(q[0], myMathMod.pi/2)

            CX(q[0], q[1])

            for i in range(q.size()):

                Measure(q[i])



        # Allocate 2 qubits

        q = qalloc(2)



        # Run the bell experiment

        kernelUseConstants(q)



        # Print the results

        q.print()

        counts = q.counts()

        self.assertEqual(len(counts), 2)

        self.assertTrue('00' in counts)

        self.assertTrue('11' in counts)

    

    def test_exp_i_theta(self):

        @qjit

        def kernelExpVar(q : qreg, theta: float):

            exponent_op = X(0) * Y(1) - Y(0) * X(1)

            exp_i_theta(q, theta, exponent_op)

        

        # Allocate 2 qubits

        q = qalloc(2)

        theta = 1.234

        # Validate exp_i_theta expansion

        comp = kernelExpVar.extract_composite(q, theta)

        self.assertEqual(comp.nInstructions(), 14)



    # Test of edge case where the first statement is a for loop

    def test_for_loop(self):

        @qjit

        def testFor(q : qreg):

            for i in range(q.size()):

                H(q[i])

        

        q = qalloc(5)

        comp = testFor.extract_composite(q)

        self.assertEqual(comp.nInstructions(), 5)   



    def test_for_loop_enumerate(self):

        set_qpu('qpp')

        @qjit

        def ansatz(q: qreg, x: List[float], exp_args: List[FermionOperator]):

            X(q[0])

            for i, exp_arg in enumerate(exp_args):

                exp_i_theta(q, x[i], exp_args[i])



        exp_args = [adag(0) * a(1) - adag(1)*a(0), adag(0)*a(2) - adag(2)*a(0)]

        H = createOperator('5.907 - 2.1433 X0X1 - 2.1433 Y0Y1 + .21829 Z0 - 6.125 Z1 + 9.625 - 9.625 Z2 - 3.91 X1 X2 - 3.91 Y1 Y2')

        energy = ansatz.observe(H, qalloc(3), [0.7118083109334505, 0.27387413138588135], exp_args)

        self.assertAlmostEqual(energy, -2.044, places=1)



    def test_multiple_kernels(self):

        @qjit
@@ -499,37 +202,5 @@ class TestKernelJIT(unittest.TestCase): 
        self.assertAlmostEqual((float)(comp.getInstruction(2).getParameter(0)), -1.234)

        self.assertEqual(comp.getInstruction(3).name(), "CNOT")  



    # Test conditional if..elif..else rewrite

    def test_if_clause(self):

        @qjit

        def test_if_stmt(q : qreg, flag: int):

            H(q[0])

            if flag == 0:

                X(q[0])

            elif flag == 1:

                Y(q[0])

            elif flag == 2:

                Z(q[0])

            else:

                T(q[0])

        

        q = qalloc(2)



        # Examine the circuit QASM with various values of flag

        comp0 = test_if_stmt.extract_composite(q, 0)

        comp1 = test_if_stmt.extract_composite(q, 1)

        comp2 = test_if_stmt.extract_composite(q, 2)

        comp3 = test_if_stmt.extract_composite(q, 3)



        self.assertEqual(comp0.nInstructions(), 2)   

        self.assertEqual(comp1.nInstructions(), 2)   

        self.assertEqual(comp2.nInstructions(), 2)   

        self.assertEqual(comp3.nInstructions(), 2)   



        self.assertEqual(comp0.getInstruction(1).name(), "X") 

        self.assertEqual(comp1.getInstruction(1).name(), "Y") 

        self.assertEqual(comp2.getInstruction(1).name(), "Z") 

        self.assertEqual(comp3.getInstruction(1).name(), "T") 



if __name__ == '__main__':

  unittest.main()
 
 No newline at end of file

python/tests/test_jit_simple.py

0 → 100644
+180 −0
Original line number Diff line number Diff line 
import unittest

from qcor import *

# Import Python math with alias

import math as myMathMod



# Some global variables for testing

MY_PI = 3.1416

class TestKernelJIT(unittest.TestCase):

    def test_simple_bell(self):



        set_qpu('qpp', {'shots':1024})



        @qjit

        def bell(q : qreg):

            H(q[0])

            CX(q[0], q[1])

            for i in range(q.size()):

                Measure(q[i])



        # Allocate 2 qubits

        q = qalloc(2)



        # Run the bell experiment

        bell(q)



        # Print the results

        q.print()

        self.assertAlmostEqual(q.exp_val_z(), 1.0, places=1)

        counts = q.counts()

        self.assertEqual(len(counts), 2)

        self.assertTrue('00' in counts)

        self.assertTrue('11' in counts)



    def test_assignment(self):



        set_qpu('qpp', {'shots':1024})



        @qjit

        def varAssignKernel(q : qreg):

            # Simple value assignment

            angle = 3.14/4.0

            Rx(q[0], angle)

            CX(q[0], q[1])

            for i in range(q.size()):

                Measure(q[i])



        # Allocate 2 qubits

        q = qalloc(2)



        # Run the bell experiment

        varAssignKernel(q)



        # Print the results

        q.print()

        counts = q.counts()

        self.assertEqual(len(counts), 2)

        self.assertTrue('00' in counts)

        self.assertTrue('11' in counts)

        # Angle less than Pi/2 => 00 more than 11

        self.assertTrue(counts['00'] > counts['11'])

    

    def test_globalVar(self):



        set_qpu('qpp', {'shots':1024})



        @qjit

        def kernelUseGlobals(q : qreg):

            Rx(q[0], MY_PI)

            CX(q[0], q[1])

            for i in range(q.size()):

                Measure(q[i])



        # Allocate 2 qubits

        q = qalloc(2)



        # Run the bell experiment

        kernelUseGlobals(q)



        # Print the results

        q.print()

        counts = q.counts()

        # Pi pulse -> X gate

        self.assertTrue(counts['11'] > 1000)

    

    def test_ModuleConstants(self):



        set_qpu('qpp', {'shots':1024})



        @qjit

        def kernelUseConstants(q : qreg):

            # Use math.pi constant

            Rx(q[0], myMathMod.pi/2)

            CX(q[0], q[1])

            for i in range(q.size()):

                Measure(q[i])



        # Allocate 2 qubits

        q = qalloc(2)



        # Run the bell experiment

        kernelUseConstants(q)



        # Print the results

        q.print()

        counts = q.counts()

        self.assertEqual(len(counts), 2)

        self.assertTrue('00' in counts)

        self.assertTrue('11' in counts)

    

    def test_exp_i_theta(self):

        @qjit

        def kernelExpVar(q : qreg, theta: float):

            exponent_op = X(0) * Y(1) - Y(0) * X(1)

            exp_i_theta(q, theta, exponent_op)

        

        # Allocate 2 qubits

        q = qalloc(2)

        theta = 1.234

        # Validate exp_i_theta expansion

        comp = kernelExpVar.extract_composite(q, theta)

        self.assertEqual(comp.nInstructions(), 14)



    # Test of edge case where the first statement is a for loop

    def test_for_loop(self):

        @qjit

        def testFor(q : qreg):

            for i in range(q.size()):

                H(q[i])

        

        q = qalloc(5)

        comp = testFor.extract_composite(q)

        self.assertEqual(comp.nInstructions(), 5)   



    def test_for_loop_enumerate(self):

        set_qpu('qpp')

        @qjit

        def ansatz(q: qreg, x: List[float], exp_args: List[FermionOperator]):

            X(q[0])

            for i, exp_arg in enumerate(exp_args):

                exp_i_theta(q, x[i], exp_args[i])



        exp_args = [adag(0) * a(1) - adag(1)*a(0), adag(0)*a(2) - adag(2)*a(0)]

        H = createOperator('5.907 - 2.1433 X0X1 - 2.1433 Y0Y1 + .21829 Z0 - 6.125 Z1 + 9.625 - 9.625 Z2 - 3.91 X1 X2 - 3.91 Y1 Y2')

        energy = ansatz.observe(H, qalloc(3), [0.7118083109334505, 0.27387413138588135], exp_args)

        self.assertAlmostEqual(energy, -2.044, places=1)



    # Test conditional if..elif..else rewrite

    def test_if_clause(self):

        @qjit

        def test_if_stmt(q : qreg, flag: int):

            H(q[0])

            if flag == 0:

                X(q[0])

            elif flag == 1:

                Y(q[0])

            elif flag == 2:

                Z(q[0])

            else:

                T(q[0])

        

        q = qalloc(2)



        # Examine the circuit QASM with various values of flag

        comp0 = test_if_stmt.extract_composite(q, 0)

        comp1 = test_if_stmt.extract_composite(q, 1)

        comp2 = test_if_stmt.extract_composite(q, 2)

        comp3 = test_if_stmt.extract_composite(q, 3)



        self.assertEqual(comp0.nInstructions(), 2)   

        self.assertEqual(comp1.nInstructions(), 2)   

        self.assertEqual(comp2.nInstructions(), 2)   

        self.assertEqual(comp3.nInstructions(), 2)   



        self.assertEqual(comp0.getInstruction(1).name(), "X") 

        self.assertEqual(comp1.getInstruction(1).name(), "Y") 

        self.assertEqual(comp2.getInstruction(1).name(), "Z") 

        self.assertEqual(comp3.getInstruction(1).name(), "T") 



if __name__ == '__main__':

  unittest.main()
 
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