fix tests

test/runtests.jl

@@ -1,7 +1,7 @@
 using DataFlow, DataFlow.Fuzz
 using MacroTools, Lazy, Base.Test
 
-import DataFlow: graphm, syntax, cse, dvertex, constant, prewalk
+import DataFlow: graphm, syntax, dvertex, constant, prewalk
 
 @testset "DataFlow" begin
 
@@ -32,29 +32,21 @@ end
   σ( Wxy*x + Why*hidden + by )
 end
 
-@test @capture syntax(recurrent.output) begin
-  h_Symbol = σ( Wxh*xs + Whh*h_Symbol + bh )
+@test @capture syntax(recurrent) begin
+  h_Symbol = σ( Wxh*xs_ + Whh*h_Symbol + bh )
   σ( Wxy*x + Why*h_Symbol + by )
 end
 
 @flow function var(xs)
-  mean = sum(xs)/length(xs)
-  meansqr = sumabs2(xs)/length(xs)
+  mean = sum(xs_)/length(xs_)
+  meansqr = sumabs2(xs_)/length(xs_)
   meansqr - mean^2
 end
 
-@test @capture syntax(var.output) begin
-  sumabs2(xs)/length(xs) - (sum(xs) / length(xs)) ^ 2
+@test @capture syntax(var) begin
+  sumabs2(xs_)/length(xs_) - (sum(xs_) / length(xs_)) ^ 2
 end
 
-@test contains(sprint(show, var),
-               string(:(sumabs2(xs)/length(xs) - (sum(xs) / length(xs)) ^ 2)))
-
-@test cse(var.output) == convert(IVertex, @flow begin
-  n = length(xs)
-  sumabs2(xs)/n - (sum(xs) / n) ^ 2
-end)
-
 let x = :(2+2)
   @test @flow(foo($x)) == dvertex(:foo, constant(x))
 end