Activate unactivated tests

Author: hersle

test/guess_propagation.jl

@@ -90,21 +90,21 @@ prob = ODEProblem(sys, [], (0.0, 1.0), [x0 => 1.0])
 @variables y(t) = x0
 @mtkbuild sys = ODESystem([x ~ x0, D(y) ~ x], t)
 prob = ODEProblem(sys, [], (0.0, 1.0), [x0 => 1.0])
-prob[x] == 1.0
-prob[y] == 1.0
+@test prob[x] == 1.0
+@test prob[y] == 1.0
 
 @parameters x0
 @variables x(t)
 @variables y(t) = x0
 @mtkbuild sys = ODESystem([x ~ y, D(y) ~ x], t)
 prob = ODEProblem(sys, [], (0.0, 1.0), [x0 => 1.0])
-prob[x] == 1.0
-prob[y] == 1.0
+@test prob[x] == 1.0
+@test prob[y] == 1.0
 
 @parameters x0
 @variables x(t) = x0
 @variables y(t) = x
 @mtkbuild sys = ODESystem([x ~ y, D(y) ~ x], t)
 prob = ODEProblem(sys, [], (0.0, 1.0), [x0 => 1.0])
-prob[x] == 1.0
-prob[y] == 1.0
+@test prob[x] == 1.0
+@test prob[y] == 1.0