kemal/spec/route_handler_spec.cr

require "./spec_helper"

describe "Kemal::RouteHandler" do
  it "routes" do
    get "/" do
      "hello"
    end
    request = HTTP::Request.new("GET", "/")
    client_response = call_request_on_app(request)
    client_response.body.should eq("hello")
  end

  it "routes request with query string" do
    get "/" do |env|
      "hello #{env.params.query["message"]}"
    end
    request = HTTP::Request.new("GET", "/?message=world")
    client_response = call_request_on_app(request)
    client_response.body.should eq("hello world")
  end

  it "routes request with multiple query strings" do
    get "/" do |env|
      "hello #{env.params.query["message"]} time #{env.params.query["time"]}"
    end
    request = HTTP::Request.new("GET", "/?message=world&time=now")
    client_response = call_request_on_app(request)
    client_response.body.should eq("hello world time now")
  end

  it "route parameter has more precedence than query string arguments" do
    get "/:message" do |env|
      "hello #{env.params.url["message"]}"
    end
    request = HTTP::Request.new("GET", "/world?message=coco")
    client_response = call_request_on_app(request)
    client_response.body.should eq("hello world")
  end

  it "parses simple JSON body" do
    post "/" do |env|
      name = env.params.json["name"]
      age = env.params.json["age"]
      "Hello #{name} Age #{age}"
    end

    json_payload = {"name": "Serdar", "age": 26}
    request = HTTP::Request.new(
      "POST",
      "/",
      body: json_payload.to_json,
      headers: HTTP::Headers{"Content-Type" => "application/json"},
    )
    client_response = call_request_on_app(request)
    client_response.body.should eq("Hello Serdar Age 26")
  end

  it "parses JSON with string array" do
    post "/" do |env|
      skills = env.params.json["skills"].as(Array)
      "Skills #{skills.each.join(',')}"
    end

    json_payload = {"skills": ["ruby", "crystal"]}
    request = HTTP::Request.new(
      "POST",
      "/",
      body: json_payload.to_json,
      headers: HTTP::Headers{"Content-Type" => "application/json"},
    )
    client_response = call_request_on_app(request)
    client_response.body.should eq("Skills ruby,crystal")
  end

  it "parses JSON with json object array" do
    post "/" do |env|
      skills = env.params.json["skills"].as(Array)
      skills_from_languages = skills.map do |skill|
        skill = skill.as(Hash)
        skill["language"]
      end
      "Skills #{skills_from_languages.each.join(',')}"
    end

    json_payload = {"skills": [{"language": "ruby"}, {"language": "crystal"}]}
    request = HTTP::Request.new(
      "POST",
      "/",
      body: json_payload.to_json,
      headers: HTTP::Headers{"Content-Type" => "application/json"},
    )

    client_response = call_request_on_app(request)
    client_response.body.should eq("Skills ruby,crystal")
  end

  it "checks for _method param in POST request to simulate PUT" do
    put "/" do |env|
      "Hello World from PUT"
    end
    request = HTTP::Request.new(
      "POST",
      "/",
      body: "_method=PUT",
      headers: HTTP::Headers{"Content-Type" => "application/x-www-form-urlencoded"}
    )
    client_response = call_request_on_app(request)
    client_response.body.should eq("Hello World from PUT")
  end

  it "checks for _method param in POST request to simulate PATCH" do
    patch "/" do |env|
      "Hello World from PATCH"
    end
    request = HTTP::Request.new(
      "POST",
      "/",
      body: "_method=PATCH",
      headers: HTTP::Headers{"Content-Type" => "application/x-www-form-urlencoded; charset=UTF-8"}
    )
    client_response = call_request_on_app(request)
    client_response.body.should eq("Hello World from PATCH")
  end

  it "checks for _method param in POST request to simulate DELETE" do
    delete "/" do |env|
      "Hello World from DELETE"
    end
    json_payload = {"_method": "DELETE"}
    request = HTTP::Request.new(
      "POST",
      "/",
      body: "_method=DELETE",
      headers: HTTP::Headers{"Content-Type" => "application/x-www-form-urlencoded; charset=UTF-8"}
    )
    client_response = call_request_on_app(request)
    client_response.body.should eq("Hello World from DELETE")
  end

  it "can process HTTP HEAD requests for defined GET routes" do
    get "/" do |env|
      "Hello World from GET"
    end
    request = HTTP::Request.new("HEAD", "/")
    client_response = call_request_on_app(request)
    client_response.status_code.should eq(200)
  end

  it "redirects user to provided url" do
    get "/" do |env|
      env.redirect "/login"
    end
    request = HTTP::Request.new("GET", "/")
    client_response = call_request_on_app(request)
    client_response.status_code.should eq(302)
    client_response.headers.has_key?("Location").should eq(true)
  end

  it "sets default Content-Type to context html" do
    get "/" do |env|
      "Hello World from GET"
    end
    request = HTTP::Request.new("GET", "/")
    client_response = call_request_on_app(request)
    client_response.content_type.should eq("text/html")
  end

  it "sets X-Powered-By to Kemal" do
    get "/" {}
    request = HTTP::Request.new("GET", "/")
    client_response = call_request_on_app(request)
    client_response.headers["X-Powered-By"].should eq("Kemal")
  end
end