Score on criteria count, not sample count

test/grow_test.go

@@ -12,22 +12,17 @@ global_memory_size: 1
 function_memory_size: 1
 instruction_limit: 2
 samples:
-- global_memory_inputs:
-    0: 0
-  global_memory_outputs:
-    0: 0
-- global_memory_inputs:
-    0: 1
-  global_memory_outputs:
-    0: 5
-- global_memory_inputs:
-    0: 2
-  global_memory_outputs:
-    0: 10
-- global_memory_inputs:
-    0: 100
-  global_memory_outputs:
-    0: 500
+- in:  [0]
+  out: [0]
+
+- in:  [1]
+  out: [5]
+
+- in:  [2]
+  out: [10]
+
+- in:  [100]
+  out: [500]
 `))
 
 	def, err := grow.NewDefinition(r)
@@ -35,7 +30,7 @@ samples:
 		t.Fatal(err)
 	}
 
-	prog, err := def.Grow()
+	prog, err := def.Grow(nil)
 	if err != nil {
 		t.Fatal(err)
 	}