Test reverse sort in probPickFirst test

test/test_prob_pick_first.jl

@@ -7,23 +7,29 @@ options = Options(
     unary_operators=(cos, sin),
     probPickFirst=0.999,
 )
-members = PopMember{Float32}[]
 
-# Generate members with scores from 0 to 1:
-for i=1:n
-    tree = Node("x1") * 3.2f0
-    score = Float32(i-1)/(n-1)
-    push!(members, PopMember(tree, score))
-end
+for reverse in [false, true]
+    members = PopMember{Float32}[]
 
-pop = Population(members, n)
+    # Generate members with scores from 0 to 1:
+    for i=1:n
+        tree = Node("x1") * 3.2f0
+        score = Float32(i-1)/(n-1)
+        if reverse
+            score = 1 - score
+        end
+        push!(members, PopMember(tree, score))
+    end
 
-best_pop_member = [
-    SymbolicRegression.bestOfSample(pop, options).score
-    for j=1:100
-]
+    pop = Population(members, n)
 
-mean_value = sum(best_pop_member)/length(best_pop_member)
+    best_pop_member = [
+        SymbolicRegression.bestOfSample(pop, options).score
+        for j=1:100
+    ]
 
-# Make sure average score is small
-@test mean_value < 0.1
+    mean_value = sum(best_pop_member)/length(best_pop_member)
+
+    # Make sure average score is small
+    @test mean_value < 0.1
+end