Practice Selenium Json protocol

Author: Ankush Kalkote

element.json

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+{
+	"using": "name",
+	"value": "q"
+}

selenium-wire.rb

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+require "json"
+require "base64"
+
+selenium_server = "http://127.0.0.1:4444/wd/hub"
+
+def parseRespAndCheckStatus(resp, operation)
+  parsed_resp = JSON.parse(resp)
+  status = parsed_resp["status"]
+  raise StandardError "#{operation} failed with error-code #{status}" unless status==0
+  return parsed_resp
+end
+
+# Create a session
+url = selenium_server + "/session"
+resp = `curl -X POST -d @browser-caps.json #{url}`
+parsed_resp = parseRespAndCheckStatus(resp, "Creating session")
+session_id = parsed_resp["sessionId"]
+puts "Session id is #{parsed_resp["sessionId"]}"
+
+# Open a url in the browser
+url = selenium_server + "/session/#{session_id}/url"
+resp = `curl -X POST -d @url.json #{url}`
+parseRespAndCheckStatus(resp, "Opening url")
+
+# Find the search box element
+url = selenium_server + "/session/#{session_id}/element"
+resp = `curl -X POST -d @element.json #{url}`
+parsed_resp = parseRespAndCheckStatus(resp, "Searching element")
+webelement = parsed_resp["value"]["ELEMENT"]
+puts "webelement json is #{webelement}"
+
+# Send keystrokes to the element
+url = selenium_server + "/session/#{session_id}/element/#{webelement}/value"
+resp = `curl -X POST -d "{"value":["Browserstack"]}" #{url}`
+parseRespAndCheckStatus(resp, "Sending keystrokes")
+
+# wait for loading
+sleep 3
+
+# Get the title of current page
+url = selenium_server + "/session/#{session_id}/title"
+resp = `curl #{url}`
+parsed_resp = parseRespAndCheckStatus(resp, "Getting title")
+puts "The title of the window is #{parsed_resp["value"]}"
+
+# Take a screenshot
+url = selenium_server + "/session/#{session_id}/screenshot"
+resp = `curl #{url}`
+parsed_resp = parseRespAndCheckStatus(resp, "Taking screenshot")
+image = Base64.decode64(parsed_resp["value"])
+File.open('screenshot.png', 'wb') { |f| f.write(image) }
+
+# Delete the session
+url = selenium_server + "/session/#{session_id}"
+resp = `curl -X DELETE #{url}`
+parseRespAndCheckStatus(resp, "Closing the session")

url.json

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+{
+	"url":"http://www.google.com"
+}