validate whitespace characters such as spaces, tabs, or newlines

validate.rb

def invalid_name?(pname)
	( pname.is_a?(Array) && pname.any? { |name| name.index(/\s|\\t|\\n/) } ) || ( pname.is_a?(String) && pname.to_s.index(/\s|\\t|\\n/) )
end

puts "Test-case-1"

tab = "foo	bar"
tab1= "foo\tbar"
s = "foo bar"
st = "foo \t bar"
n = "foo
bar"
n2 = "foo\nbar"
valid = "foobar"

puts "Invalid name tab: #{tab}" if invalid_name?(tab)
puts "Invalid name tab1: #{tab1}" if invalid_name?(tab1)
puts "Invalid name s: #{s}" if invalid_name?(s)
puts "Invalid name st: #{st}" if invalid_name?(st)
puts "Invalid name n: #{n}" if invalid_name?(n)
puts "Invalid name n2: #{n2}" if invalid_name?(n2)
puts "Valid name vallid: #{valid}" unless invalid_name?(valid)

puts "\n\n"

puts "Test-case-2"

tab = 'foo	bar'
tab1= 'foo\tbar'
s = 'foo bar'
st = 'foo \t bar'
n = 'foo
bar'
n2 = 'foo\nbar'
valid = 'foobar'

puts "Invalid name tab: #{tab}" if invalid_name?(tab)
puts "Invalid name tab1: #{tab1}" if invalid_name?(tab1)
puts "Invalid name s: #{s}" if invalid_name?(s)
puts "Invalid name st: #{st}" if invalid_name?(st)
puts "Invalid name n: #{n}" if invalid_name?(n)
puts "Invalid name n2: #{n2}" if invalid_name?(n2)
puts "Valid name vallid: #{valid}" unless invalid_name?(valid)

# output for both are same

# Test-case
# Invalid name tab: foo	bar
# Invalid name tab1: foo	bar
# Invalid name s: foo bar
# Invalid name st: foo 	 bar
# Invalid name n: foo
# bar
# Invalid name n2: foo
# bar
# Valid name vallid: foobar