Added tests

julia/test/laguerre-conway.jl

@@ -0,0 +1,15 @@
+@testset "Laguerre-Conway" begin
+  for T in rand(3600*1.5:3600*4, (5))
+    start = oe_to_xyz([ (μs["Earth"]*(T/(2π))^2)^(1/3), 0.1, 0.1, 0., 0., 1. ], μs["Earth"])
+    orbit = start
+    for _ in 1:5
+      i = 0.
+      while i < T
+        orbit = laguerre_conway(orbit, μs["Earth"], 1.)
+        i += 1
+      end
+      @test i ≈ T
+      @test orbit ≈ start
+    end
+  end
+end