add tests

Author: SimonDanisch

test/REQUIRE

@@ -4,3 +4,5 @@ JSExpr
 IJulia
 NBInclude 2.0.0
 NodeJS
+HTTP
+WebSockets

test/http-tests.jl

@@ -0,0 +1,12 @@
+using WebIO
+using HTTP, WebSockets
+using JSExpr
+using Test
+
+@testset "HTTP provider" begin
+    output = sprint(io-> show(io, MIME"application/webio"(), node(:div, "hi")))
+    @test occursin("<script> var websocket_url = \"127.0.0.1:8081/webio_websocket/\" </script>", output)
+    @test occursin("""{"props":{},"nodeType":"DOM","type":"node","instanceArgs":{"namespace":"html","tag":"div"},"children":["hi"]}""", output)
+    @test WebIO.webio_server_config[] == (url = "127.0.0.1", http_port = 8081, ws_url = "127.0.0.1:8081/webio_websocket/")
+    @test isassigned(WebIO.singleton_instance)
+end

test/runtests.jl

@@ -73,6 +73,7 @@ end
 
 include("communication.jl")
 include("node.jl")
+include("http-tests.jl")
 include("mux-tests.jl")
 include("blink-tests.jl")
 include("util-tests.jl")