Merge pull request #391 from AayushSabharwal/as/fix-tests

test: fix tests of analytically solved systems

Author: ChrisRackauckas

test/Mechanical/rotational.jl

@@ -289,10 +289,7 @@ end
         end
     end
     @mtkbuild sys = TestPosition()
-    prob = ODEProblem(sys, [
-            sys.inertia.phi => 0,
-            sys.inertia.w => 0
-        ], (0, 10.0))
+    prob = ODEProblem(sys, [], (0, 10.0))
     sol = solve(prob, Tsit5())
     @test SciMLBase.successful_retcode(sol)
     tv = 0:0.01:10

test/Thermal/thermal.jl

@@ -144,10 +144,7 @@ end
             collector, th_resistor, mass])
     sys = structural_simplify(coll)
 
-    u0 = [
-        mass.T => 0.0
-    ]
-    prob = ODEProblem(sys, u0, (0, 3.0))
+    prob = ODEProblem(sys, [], (0, 3.0))
     sol = solve(prob, Rodas4())
 
     @test SciMLBase.successful_retcode(sol)