Add pytest-based tests and remove nose tests.

examples/acoustics_1d_homogeneous/acoustics_1d.py

@@ -24,7 +24,8 @@
 
 def setup(use_petsc=False, kernel_language='Fortran', solver_type='classic',
           outdir='./_output', ptwise=False, weno_order=5,
-          time_integrator='SSP104', disable_output=False, output_style=1):
+          time_integrator='SSP104', disable_output=False, output_style=1,
+          num_cells=100):
 
     if use_petsc:
         import clawpack.petclaw as pyclaw
@@ -54,7 +55,7 @@ def setup(use_petsc=False, kernel_language='Fortran', solver_type='classic',
 
     solver.kernel_language = kernel_language
 
-    x = pyclaw.Dimension(0.0, 1.0, 100, name='x')
+    x = pyclaw.Dimension(0.0, 1.0, num_cells, name='x')
     domain = pyclaw.Domain(x)
     num_eqn = 2
     state = pyclaw.State(domain, num_eqn)
@@ -71,9 +72,9 @@ def setup(use_petsc=False, kernel_language='Fortran', solver_type='classic',
     state.problem_data['cc'] = sqrt(bulk/rho)   # Sound speed
 
     xc = domain.grid.x.centers
-    beta = 100
+    beta = 200
     gamma = 0
-    x0 = 0.75
+    x0 = 0.5
     state.q[0, :] = exp(-beta * (xc-x0)**2) * cos(gamma * (xc - x0))
     state.q[1, :] = 0.0
 

examples/acoustics_1d_homogeneous/test_acoustics.py

@@ -1,70 +1,48 @@
-
-def test_1d_acoustics():
-    """test_1d_acoustics
-
-    tests against known classic, sharpclaw, and high-order weno results """
-
-    from . import acoustics_1d
-
-    def verify_expected(expected):
-        """ binds the expected value to the acoustics_verify methods """
-        def acoustics_verify(claw):
-            from clawpack.pyclaw.util import check_diff
-            import numpy as np
-
-            # tests are done across the entire domain of q normally
-            q0 = claw.frames[0].state.get_q_global()
-            qfinal = claw.frames[claw.num_output_times].state.get_q_global()
-
-            # and q_global is only returned on process 0
-            if q0 is not None and qfinal is not None:
-                q0 = q0.reshape([-1])
-                qfinal = qfinal.reshape([-1])
-                dx = claw.solution.domain.grid.delta[0]
-                test = dx*np.sum(np.abs(qfinal-q0))
-                return check_diff(expected, test, abstol=1e-4)
-            else:
-                return
-        return acoustics_verify
-
-    from clawpack.pyclaw.util import gen_variants
-
-    classic_tests = gen_variants(acoustics_1d.setup, verify_expected(0.001049),
-                                 kernel_languages=('Python', 'Fortran'),
-                                 solver_type='classic', disable_output=True)
-
-    time_step_test = gen_variants(acoustics_1d.setup, verify_expected(0.002020),
-                                  kernel_languages=('Python',),
-                                  solver_type='classic', disable_output=True,
-                                  output_style=(3))
-
-    ptwise_tests = gen_variants(acoustics_1d.setup, verify_expected(0.001049),
-                                kernel_languages=('Fortran',), ptwise=True,
-                                solver_type='classic', disable_output=True)
-
-    sharp_tests_rk = gen_variants(acoustics_1d.setup, verify_expected(0.000299),
-                                  kernel_languages=('Python', 'Fortran'),
-                                  solver_type='sharpclaw',
-                                  time_integrator='SSP104', disable_output=True)
-
-    sharp_tests_lmm = gen_variants(acoustics_1d.setup,
-                                   verify_expected(0.000231),
-                                   kernel_languages=('Python', 'Fortran'),
-                                   solver_type='sharpclaw',
-                                   time_integrator='SSPLMMk3',
-                                   disable_output=True)
-
-    weno_tests = gen_variants(acoustics_1d.setup, verify_expected(0.000153),
-                              kernel_languages=('Fortran',),
-                              solver_type='sharpclaw', time_integrator='SSP104',
-                              weno_order=17, disable_output=True)
-
-    from itertools import chain
-    for test in chain(classic_tests, time_step_test, ptwise_tests,
-                      sharp_tests_rk, sharp_tests_lmm, weno_tests):
-        yield test
-
-
-if __name__ == "__main__":
-    import nose
-    nose.main()
+from . import acoustics_1d
+from clawpack.pyclaw.util import check_diff
+import numpy as np
+
+def error(**kwargs):
+    """
+    Compute difference between initial and final solutions.
+    This should vanish due to the periodic boundary conditions
+    """
+
+    claw = acoustics_1d.setup(disable_output=True,**kwargs)
+    claw.run()
+
+    # tests are done across the entire domain of q normally
+    q0 = claw.frames[0].state.get_q_global()
+    qfinal = claw.frames[claw.num_output_times].state.get_q_global()
+
+    q0 = q0.reshape([-1])
+    qfinal = qfinal.reshape([-1])
+    dx = claw.solution.domain.grid.delta[0]
+    diff = dx*np.sum(np.abs(qfinal-q0))
+    return diff
+
+class TestRegression:
+    def test_python_classic(self):
+        assert abs(error(kernel_language='Python',solver_type='classic')-0.001981)<1e-5
+
+    def test_fortran_classic(self):
+        assert abs(error(kernel_language='Fortran',solver_type='classic')-0.001981)<1e-5
+
+    def test_sharpclaw(self):
+        assert abs(error(kernel_language='Fortran',solver_type='sharpclaw')-0.001540)<1e-5
+        assert abs(error(kernel_language='Fortran',solver_type='sharpclaw',weno_order=11)-0.000521)<1e-5
+        assert abs(error(kernel_language='Fortran',solver_type='sharpclaw',time_integrator='SSPLMMk3')-0.001545)<1e-5
+
+class TestAccuracy:
+
+    def test_python_classic(self):
+        assert abs(error(num_cells=2000,kernel_language='Python',solver_type='classic'))<1e-5
+
+    def test_fortran_classic(self):
+        assert abs(error(num_cells=2000,kernel_language='Fortran',solver_type='classic'))<1e-5
+        assert abs(error(num_cells=4000,kernel_language='Fortran',solver_type='classic'))<2e-6
+
+    def test_sharpclaw(self):
+        assert abs(error(num_cells=2000,kernel_language='Fortran',solver_type='sharpclaw'))<1e-8
+        assert abs(error(num_cells=2000,kernel_language='Fortran',solver_type='sharpclaw',weno_order=11))<1e-8
+        assert abs(error(num_cells=2000,kernel_language='Fortran',solver_type='sharpclaw',time_integrator='SSPLMMk3'))<2e-8

examples/acoustics_2d_homogeneous/test_2d_acoustics.py

@@ -1,49 +1,30 @@
-def test_2d_acoustics():
-    """test_2d_acoustics"""
+from . import acoustics_2d
+import numpy as np
+from clawpack.pyclaw.util import check_diff
+import os
 
-    def verify_data(data_filename):
-        def verify(claw):
-            """ verifies 2d homogeneous acoustics from a previously verified run """
-            import os
-            import numpy as np
-            from clawpack.pyclaw.util import check_diff
+def check_error(data_filename,**kwargs):
 
+    claw = acoustics_2d.setup(disable_output=True,**kwargs)
+    claw.run()
 
-            #grabs parallel results to process 0, None to other processes
-            test_q=claw.solution.state.get_q_global()
+    test_pressure = claw.frames[-1].q[0,:,:]
+    thisdir = os.path.dirname(__file__)
+    expected_pressure = np.loadtxt(os.path.join(thisdir,data_filename))
+    return check_diff(expected_pressure, test_pressure, reltol=1e-3,
+                        delta=claw.solution.grid.delta)
 
-            if test_q is not None:
-                test_pressure = test_q[0,:,:]
-                thisdir = os.path.dirname(__file__)
-                expected_pressure = np.loadtxt(os.path.join(thisdir,data_filename))
-                return check_diff(expected_pressure, test_pressure, reltol=1e-3,
-                                    delta=claw.solution.grid.delta)
-            else:
-                return
-        return verify
 
-    from clawpack.pyclaw.util import gen_variants
-    from . import acoustics_2d
+class TestAcoustics2D:
+    def test_classic(self):
+        assert check_error('verify_classic.txt',solver_type='classic')==None
 
-    classic_tests = gen_variants(acoustics_2d.setup, verify_data('verify_classic.txt'),
-                                 kernel_languages=('Fortran',), solver_type='classic', disable_output=True)
+    def test_classic_ptwise(self):
+        assert check_error('verify_classic.txt',solver_type='classic',ptwise=True)==None
 
-    ptwise_tests = gen_variants(acoustics_2d.setup, verify_data('verify_classic.txt'),
-                                 kernel_languages=('Fortran',), ptwise=True, solver_type='classic', disable_output=True)
+    def test_sharpclaw(self):
+        assert check_error('verify_sharpclaw.txt',solver_type='sharpclaw')==None
 
-    sharp_tests_rk   = gen_variants(acoustics_2d.setup, verify_data('verify_sharpclaw.txt'),
-                                 kernel_languages=('Fortran',), solver_type='sharpclaw', 
-                                 time_integrator='SSP104', disable_output=True)
-
-    sharp_tests_lmm   = gen_variants(acoustics_2d.setup, verify_data('verify_sharpclaw_lmm.txt'),
-                                 kernel_languages=('Fortran',), solver_type='sharpclaw', 
-                                 time_integrator='SSPLMMk2', disable_output=True)
-
-    from itertools import chain
-    for test in chain(classic_tests, ptwise_tests, sharp_tests_rk, sharp_tests_lmm):
-        yield test
-
-
-if __name__=="__main__":
-    import nose
-    nose.main()
+    def test_sharpclaw_multistep(self):
+        assert check_error('verify_sharpclaw_lmm.txt',solver_type='sharpclaw',
+                           time_integrator='SSPLMMk2')==None

examples/acoustics_2d_mapped/test_acoustics_2d_mapped.py

@@ -1,40 +1,21 @@
-def test_acoustics_2d_variable():
-    """Test variable-coefficient 2D acoustics on mapped grids"""
+from . import acoustics_2d_inclusions
+import numpy as np
+from clawpack.pyclaw.util import check_diff
+import os
 
-    import acoustics_2d_inclusions
+def check_error(data_filename,**kwargs):
 
-    def verify_acoustics_inclusions(controller, solver_type='classic'):
-        """ Regression test against data from a previous run."""
-        import os
-        from clawpack.pyclaw.util import check_diff
-        import numpy as np
+    claw = acoustics_2d_inclusions.setup(disable_output=True,**kwargs)
+    claw.run()
+    test_pressure = claw.frames[-1].q[0,:,:]
 
-        state = controller.frames[controller.num_output_times].state
-        dx, dy = controller.solution.domain.grid.delta
-        test_q = state.get_q_global()
+    thisdir = os.path.dirname(__file__)
+    expected_pressure = np.load(os.path.join(thisdir, 'pressure.npz'))['arr_0']
+    test_err = np.max(np.abs(expected_pressure[:].reshape(-1) - 
+                             test_pressure[:].reshape(-1)))
+    return check_diff(0, test_err, abstol=1e-7)
 
-        if test_q is not None:
-            thisdir = os.path.dirname(__file__)
-            expected_pressure = np.load(os.path.join(thisdir,
-                                        'pressure.npz'))['arr_0']
-            test_pressure = test_q[0,:,:]
-            test_err = np.max(np.abs(expected_pressure[:].reshape(-1) - 
-                                     test_pressure[:].reshape(-1)))
-            return check_diff(0, test_err, abstol=1e-7)
 
-
-    from clawpack.pyclaw.util import gen_variants
-
-    verify_func = lambda controller: verify_acoustics_inclusions(controller, solver_type='classic')
-    classic_tests = gen_variants(acoustics_2d_inclusions.setup, verify_func,
-                                 solver_type='classic', disable_output=True, 
-                                 num_cells=100,num_output_times=1)
-
-    from itertools import chain
-    for test in chain(classic_tests):
-        yield test
-
-
-if __name__=="__main__":
-    import nose
-    nose.main()
+def test_classic():
+    assert check_error('verify_classic.txt',solver_type='classic',
+                       num_cells=100,num_output_times=1)==None

examples/acoustics_2d_variable/test_acoustics_2d_variable.py

@@ -1,55 +1,30 @@
-def test_acoustics_2d_variable():
-    """Test variable-coefficient 2D acoustics"""
+from . import acoustics_2d_interface
+import numpy as np
+from clawpack.pyclaw.util import check_diff
+import os
 
-    from . import acoustics_2d_interface
+def check_error(**kwargs):
 
-    def verify_acoustics(controller, solver_type='classic'):
-        """ Verifies 2d variable-coefficient acoustics from a previously verified classic run """
-        import os
-        from clawpack.pyclaw.util import check_diff
-        import numpy as np
+    solver_type = kwargs['solver_type']
+    claw = acoustics_2d_interface.setup(disable_output=True,**kwargs)
+    claw.run()
+    test_pressure = claw.frames[-1].q[0,:,:]
 
-        state = controller.frames[controller.num_output_times].state
-        dx, dy = controller.solution.domain.grid.delta
-        test_q = state.get_q_global()
+    thisdir = os.path.dirname(__file__)
+    expected_pressure = np.loadtxt(os.path.join(thisdir, 'pressure_%s.txt' % solver_type))
+    test_err = np.max(np.abs(expected_pressure[:].reshape(-1) - 
+                             test_pressure[:].reshape(-1)))
+    print(test_err)
+    return check_diff(0, test_err, abstol=1e-1)
 
-        if test_q is not None:
-            thisdir = os.path.dirname(__file__)
-            expected_pressure = np.loadtxt(os.path.join(thisdir,
-                                               'pressure_%s.txt' % solver_type))
-            test_pressure = test_q[0,:,:]
-            #test_err = dx*dy*np.linalg.norm(expected_pressure-test_pressure)
-            test_err = np.max(np.abs(expected_pressure[:].reshape(-1) - 
-                                     test_pressure[:].reshape(-1)))
-            return check_diff(0, test_err, abstol=1e-1)
 
+class TestAcoustics2D:
+    def test_classic(self):
+        assert check_error(solver_type='classic',num_cells=(50,50))==None
 
-    from clawpack.pyclaw.util import gen_variants
+    def test_sharpclaw(self):
+        assert check_error(solver_type='sharpclaw',num_cells=(50,50))==None
 
-    verify_func = lambda controller: verify_acoustics(controller, solver_type='classic')
-    classic_tests = gen_variants(acoustics_2d_interface.setup, verify_func,
-                                 solver_type='classic', disable_output=True, 
-                                 num_cells=(50, 50))
-
-    verify_func = lambda controller: verify_acoustics(controller, solver_type='sharpclaw')
-    sharp_tests_rk   = gen_variants(acoustics_2d_interface.setup, 
-                                    verify_func,
-                                    solver_type='sharpclaw', 
-                                    time_integrator='SSP104', 
-                                    disable_output=True, num_cells=(50, 50))
-
-    sharp_tests_lmm   = gen_variants(acoustics_2d_interface.setup, 
-                                     verify_func, lim_type=1,
-                                     solver_type='sharpclaw', 
-                                     time_integrator='SSPLMMk2', 
-                                     disable_output=True,
-                                     num_cells=(50, 50))
-
-    from itertools import chain
-    for test in chain(classic_tests, sharp_tests_rk, sharp_tests_lmm):
-        yield test
-
-
-if __name__=="__main__":
-    import nose
-    nose.main()
+    def test_sharpclaw_multistep(self):
+        assert check_error(solver_type='sharpclaw',num_cells=(50,50),
+                           time_integrator='SSPLMMk2')==None