diff --git a/examples/columbia_plume/test_bathy_smoothing.py b/examples/columbia_plume/bath_smoothing_test.py
similarity index 97%
rename from examples/columbia_plume/test_bathy_smoothing.py
rename to examples/columbia_plume/bath_smoothing_test.py
index 0032e954a..954ad4bf7 100644
--- a/examples/columbia_plume/test_bathy_smoothing.py
+++ b/examples/columbia_plume/bath_smoothing_test.py
@@ -3,6 +3,7 @@
 ===============================
 """
 from thetis import *
+from firedrake.output.vtk_output import VTKFile
 from bathymetry import get_bathymetry, smooth_bathymetry, smooth_bathymetry_at_bnd
 comm = COMM_WORLD
 
diff --git a/test/examples/test_examples.py b/test/examples/test_examples.py
index c74c4100d..1a53238e0 100644
--- a/test/examples/test_examples.py
+++ b/test/examples/test_examples.py
@@ -24,7 +24,7 @@
     'columbia_plume/plot_elevation_ts.py',
     'columbia_plume/plot_salt_profile.py',
     'columbia_plume/roms_forcing.py',
-    'columbia_plume/test_bathy_smoothing.py',
+    'columbia_plume/bath_smoothing_test.py',
     'columbia_plume/tidal_forcing.py',
     'columbia_plume/timeseries_forcing.py',
     'dome/diagnostics.py',
@@ -62,8 +62,7 @@
 all_examples = [f for f in all_examples if f not in exclude_files]
 
 
-@pytest.fixture(params=all_examples,
-                ids=lambda x: os.path.basename(x))
+@pytest.fixture(params=all_examples)
 def example_file(request):
     return os.path.abspath(request.param)
 
diff --git a/test/sediment/test_sed_slide.py b/test/sediment/test_sed_slide.py
index 947be0958..667a36729 100644
--- a/test/sediment/test_sed_slide.py
+++ b/test/sediment/test_sed_slide.py
@@ -1,88 +1,88 @@
-"""
-Unphysical Slope Test case
-=======================
-
-Tests the sediment slide mechanism in the Exner equation, by starting with an
-unphysical slope and reducing the slope angle over time
-
-"""
-
 from thetis import *
 
-# define mesh
-mesh2d = RectangleMesh(20, 10, 4, 2)
-x, y = SpatialCoordinate(mesh2d)
-
-vectorP1_2d = VectorFunctionSpace(mesh2d, 'DG', 1)
-V = FunctionSpace(mesh2d, 'CG', 1)
-
-# define initial bathymetry
-bathymetry_2d = Function(V, name='Bathymetry')
-z_init = conditional(x < 2, 0, conditional(x <= 4, 0.5*x-1, 0))
-bathymetry_2d.interpolate(z_init)
-
-# define initial conditions
-uv_init = Function(vectorP1_2d).interpolate(as_vector((Constant(0.46), Constant(0.0))))
-elev_init = Constant(4)
-
-# set up solver
-solver_obj = solver2d.FlowSolver2d(mesh2d, bathymetry_2d)
-options = solver_obj.options
-options.simulation_export_time = 1
-options.simulation_end_time = 20
-options.no_exports = True
-
-options.horizontal_viscosity = Constant(1e-6)
-
-# for the test, only using bedload with sediment slide mechanism
-options.sediment_model_options.solve_suspended_sediment = False
-options.sediment_model_options.use_bedload = True
-options.sediment_model_options.use_slope_mag_correction = False
-options.sediment_model_options.use_angle_correction = False
-options.sediment_model_options.use_sediment_slide = True
-options.sediment_model_options.solve_exner = True
-options.sediment_model_options.average_sediment_size = Constant(2.6e-4)
-options.sediment_model_options.bed_reference_height = Constant(0.0002)
-# average meshgrid stepsize
-options.sediment_model_options.sed_slide_length_scale = Constant(0.2)
-# maximum angle of repose which the slope should have (this is the target angle)
-options.sediment_model_options.max_angle = Constant(22)
-options.sediment_model_options.morphological_acceleration_factor = Constant(20)
-options.sediment_model_options.use_advective_velocity_correction = False
-# using nikuradse friction
-options.nikuradse_bed_roughness = Constant(3*options.sediment_model_options.average_sediment_size)
-
-# crank-nicolson used to integrate in time system of ODEs resulting from application of galerkin FEM
-options.set_timestepper_type('CrankNicolson', implicitness_theta=1.0)
-options.timestep = 0.1
-
-# set boundary conditions
-left_bnd_id = 1
-right_bnd_id = 2
-
-swe_bnd = {}
-uv_vector = as_vector((0.46, 0.0))
-swe_bnd[left_bnd_id] = {'uv': uv_vector}
-swe_bnd[right_bnd_id] = {'elev': Constant(4)}
-solver_obj.bnd_functions['shallow_water'] = swe_bnd
-
-# set initial conditions
-solver_obj.assign_initial_conditions(uv=uv_init, elev=elev_init)
-
-beta = Function(V)
-max_beta_list = []
-
-
-def update_forcing(t_new):
-    # record maximum slope angle and check it is decreasing
-    beta.interpolate(solver_obj.sediment_model.betaangle)
-    max_beta_list.append(max(beta.dat.data[:])*180/pi)
-
-    if len(max_beta_list) > 30:
-        assert max_beta_list[-1] < max_beta_list[-10], 'Sediment slide mechanism is not causing\
-                                                         the angle to decrease'
-
-
-solver_obj.iterate(update_forcings=update_forcing)
-
-assert numpy.round(max_beta_list[-1], 1) == 24.6, 'Sediment slide mechanism has changed'
+
+def test_sediment_slide():
+    """
+    Unphysical Slope Test case
+    =======================
+
+    Tests the sediment slide mechanism in the Exner equation, by starting with an
+    unphysical slope and reducing the slope angle over time
+
+    """
+
+    # define mesh
+    mesh2d = RectangleMesh(20, 10, 4, 2)
+    x, y = SpatialCoordinate(mesh2d)
+
+    vectorP1_2d = VectorFunctionSpace(mesh2d, 'DG', 1)
+    V = FunctionSpace(mesh2d, 'CG', 1)
+
+    # define initial bathymetry
+    bathymetry_2d = Function(V, name='Bathymetry')
+    z_init = conditional(x < 2, 0, conditional(x <= 4, 0.5*x-1, 0))
+    bathymetry_2d.interpolate(z_init)
+
+    # define initial conditions
+    uv_init = Function(vectorP1_2d).interpolate(as_vector((Constant(0.46), Constant(0.0))))
+    elev_init = Constant(4)
+
+    # set up solver
+    solver_obj = solver2d.FlowSolver2d(mesh2d, bathymetry_2d)
+    options = solver_obj.options
+    options.simulation_export_time = 1
+    options.simulation_end_time = 20
+    options.no_exports = True
+
+    options.horizontal_viscosity = Constant(1e-6)
+
+    # for the test, only using bedload with sediment slide mechanism
+    options.sediment_model_options.solve_suspended_sediment = False
+    options.sediment_model_options.use_bedload = True
+    options.sediment_model_options.use_slope_mag_correction = False
+    options.sediment_model_options.use_angle_correction = False
+    options.sediment_model_options.use_sediment_slide = True
+    options.sediment_model_options.solve_exner = True
+    options.sediment_model_options.average_sediment_size = Constant(2.6e-4)
+    options.sediment_model_options.bed_reference_height = Constant(0.0002)
+    # average meshgrid stepsize
+    options.sediment_model_options.sed_slide_length_scale = Constant(0.2)
+    # maximum angle of repose which the slope should have (this is the target angle)
+    options.sediment_model_options.max_angle = Constant(22)
+    options.sediment_model_options.morphological_acceleration_factor = Constant(20)
+    options.sediment_model_options.use_advective_velocity_correction = False
+    # using nikuradse friction
+    options.nikuradse_bed_roughness = Constant(3*options.sediment_model_options.average_sediment_size)
+
+    # crank-nicolson used to integrate in time system of ODEs resulting from application of galerkin FEM
+    options.set_timestepper_type('CrankNicolson', implicitness_theta=1.0)
+    options.timestep = 0.1
+
+    # set boundary conditions
+    left_bnd_id = 1
+    right_bnd_id = 2
+
+    swe_bnd = {}
+    uv_vector = as_vector((0.46, 0.0))
+    swe_bnd[left_bnd_id] = {'uv': uv_vector}
+    swe_bnd[right_bnd_id] = {'elev': Constant(4)}
+    solver_obj.bnd_functions['shallow_water'] = swe_bnd
+
+    # set initial conditions
+    solver_obj.assign_initial_conditions(uv=uv_init, elev=elev_init)
+
+    beta = Function(V)
+    max_beta_list = []
+
+    def update_forcing(t_new):
+        # record maximum slope angle and check it is decreasing
+        beta.interpolate(solver_obj.sediment_model.betaangle)
+        max_beta_list.append(max(beta.dat.data[:])*180/pi)
+
+        if len(max_beta_list) > 30:
+            assert max_beta_list[-1] < max_beta_list[-10], 'Sediment slide mechanism is not causing\
+                                                             the angle to decrease'
+
+    solver_obj.iterate(update_forcings=update_forcing)
+
+    assert numpy.round(max_beta_list[-1], 1) == 24.6, 'Sediment slide mechanism has changed'