tests with variable dt: turn on var dt switch

Author: pdziekan

tests/python/physics/coalescence_golovin.py

@@ -117,6 +117,14 @@ def calc_golovin(res,t,n0,v0,b):
       opts_init.sd_conc = 0
       opts_init.sd_const_multi = 1000
       opts_init.n_sd_max = int(float(n_zero) / opts_init.sd_const_multi + 10)
+
+    opts.dt = opts_dt
+    if opts_dt < 0:
+      n_step = simulation_time / opts_init.dt
+    else:
+      assert(simulation_time % opts_dt == 0)
+      opts_init.variable_dt_switch=True
+      n_step = simulation_time / opts_dt
 
     try:
       prtcls = lgrngn.factory(lgrngn.backend_t.OpenMP, opts_init)
@@ -125,13 +133,6 @@ def calc_golovin(res,t,n0,v0,b):
 
     prtcls.init(th, rv, rhod)
     init_number_of_particles = partno()
-
-    opts.dt = opts_dt
-    if opts_dt < 0:
-      n_step = simulation_time / opts_init.dt
-    else:
-      assert(simulation_time % opts_dt == 0)
-      n_step = simulation_time / opts_dt
 
     #simulation loop
     for step in range(int(n_step)):

tests/python/physics/lgrngn_cond.py

@@ -80,6 +80,8 @@ def test(RH_formula, _step_count, substep_count, exact_substep, constp, opts_dt)
     opts_init.sstp_cond=substep_count
     opts_init.exact_sstp_cond=exact_substep
     opts_init.RH_formula = RH_formula
+    if opts_dt > 0:
+      opts_init.variable_dt_switch=True
     opts.dt = opts_dt
 
     # adjust number of steps if opts_dt overrides opts_init.dt