update toolchain/test/cases

Author: Hyeoksu Lee

toolchain/mfc/test/cases.py

@@ -176,15 +176,13 @@ def alter_riemann_solvers(num_fluids):
     def alter_low_Mach_correction():
         stack.push('', {'fluid_pp(1)%gamma' : 0.16, 'fluid_pp(1)%pi_inf': 3515.0, 'dt': 1e-7})
 
-        for low_Mach in [1, 2]:
-            stack.push(f"low_Mach={low_Mach}", {'low_Mach': low_Mach})
-            stack.push(f"riemann_solver=1",{'riemann_solver': 1})
-            cases.append(define_case_d(stack, '', {}))
-            stack.pop()
-            stack.push(f"riemann_solver=2",{'riemann_solver': 2})
-            cases.append(define_case_d(stack, '', {}))
-            stack.pop()
-            stack.pop()
+        stack.push(f"riemann_solver=1",{'riemann_solver': 1})
+        cases.append(define_case_d(stack, 'low_Mach=1', {'low_Mach': 1}))
+        stack.pop()
+        stack.push(f"riemann_solver=2",{'riemann_solver': 2})
+        cases.append(define_case_d(stack, 'low_Mach=1', {'low_Mach': 1}))
+        cases.append(define_case_d(stack, 'low_Mach=2', {'low_Mach': 2}))
+        stack.pop()
 
         stack.pop()