[dt] Added a test for Richards flow with adaptive time stepping

ProcessLib/RichardsFlow/Tests.cmake

@@ -31,3 +31,29 @@ AddTest(
         ref_t_20000.000000.vtu richards_pcs_0_ts_18200_t_20000.000000.vtu pressure pressure
     REQUIREMENTS NOT OGS_USE_MPI
 )
+
+AddTest(
+    NAME 2D_RichardsFlow_h_us_quad_small_Adpative_dt
+    PATH Parabolic/Richards
+    EXECUTABLE ogs
+    EXECUTABLE_ARGS RichardsFlow_2d_small_adaptive_dt.prj
+    TESTER vtkdiff
+    ABSTOL 1e-8 RELTOL 1e-3
+    DIFF_DATA
+    ref_t_1600.000000.vtu richards_pcs_0_ts_805_t_1600.000000.vtu pressure pressure
+    REQUIREMENTS NOT OGS_USE_MPI
+)
+
+#PETSc/MPI
+AddTest(
+    NAME 2D_RichardsFlow_h_us_quad_small_Adpative_dt
+    PATH Parabolic/Richards
+    EXECUTABLE_ARGS RichardsFlow_2d_small_adaptive_dt.prj
+    WRAPPER mpirun
+    WRAPPER_ARGS -np 1
+    TESTER vtkdiff
+    REQUIREMENTS OGS_USE_MPI
+    ABSTOL 1e-8 RELTOL 1e-3
+    DIFF_DATA
+    ref_t_1600.000000.vtu richards_pcs_0_ts_805_t_1600_000000_0.vtu pressure pressure
+)

Data @ e9754efa

-Subproject commit 7d37fea54339d33afa1670b23dca07b7798c3e79
+Subproject commit e9754efad6c6a2467a66f6d0138c94e999c3972e