update the namespaced exprs tests

Co-authored-by: "Yingbo Ma" <[email protected]>

Author: shashi

test/direct.jl

@@ -12,11 +12,10 @@ eqs = [σ*(y-x),
        x*(ρ-z)-y,
        x*y - β*z]
 
-simpexpr = [
-   :(σ * (y - x))
-   :(x * (ρ - z) - y)
-   :(x * y - β * z)
-   ]
+
+simpexpr = Expr[:($(*)(σ, $(-)(y, x))),
+                :($(-)($(*)(x, $(-)(ρ, z)), y)),
+                :($(-)($(*)(x, y), $(*)(β, z)))]
 
 for i in 1:3
    @test ModelingToolkit.toexpr.(eqs)[i] == simpexpr[i]

test/simplify.jl

@@ -19,9 +19,9 @@ simplify(minus_op)
 
 @variables x
 
-@test toexpr(expand_derivatives(Differential(x)((x-2)^2))) == :(2 * (-2 + x))
-@test toexpr(expand_derivatives(Differential(x)((x-2)^3))) == :(3 * (-2 + x)^2)
-@test toexpr(simplify(x+2+3)) == :(5 + x)
+@test toexpr(expand_derivatives(Differential(x)((x-2)^2))) == :($(*)(2, $(+)(-2, x)))
+@test toexpr(expand_derivatives(Differential(x)((x-2)^3))) == :($(*)(3, $(^)($(+)(-2, x), 2)))
+@test toexpr(simplify(x+2+3)) == :($(+)(5, x))
 
 d1 = Differential(x)((-2 + x)^2)
 d2 = Differential(x)(d1)