Getting "http///" in address bar - watir

Question

"URL.txt" file contains "www.google.com". the puts shows the value in the console. But after launching IE, in address bar it shows "[http:///]" and program tarminates.
Here is my Watir code.
require 'rubygems'
require 'watir'
File.open("URL.txt", "r").each_line do |line|
puts line
end
a = Watir::Browser.new
a.goto '#{line}'
am I doing anything wrong?

Answer 1

You are asking IE to go the url #{line}. If you do this manually, IE automatically goes to http:///.
You have 2 issues:
When you do '#{line}', the single quotes mean that there is no string interpolation - ie you get what you see. To have the string interpolation, you need double quotes - "#{line}". However, in this case, you could simply do line (ie line is already a string).
Assuming you fixed issue 1, the next problem is that line is undefined in a.goto "#{line}". You have only defined it within the File.open block. It is no longer available when you get to the a.goto.
Assuming that the script is meant to visit each url in the file, you probably meant to do:
require 'rubygems'
require 'watir'
File.open("URL.txt", "r").each_line do |line|
puts line
a = Watir::Browser.new
a.goto line
end
Or, if you were to visit each page using the same browser:
require 'rubygems'
require 'watir'
a = Watir::Browser.new
File.open("URL.txt", "r").each_line do |line|
puts line
a.goto line
end