coffeescript/test/test_string_interpolation.coffee

Unfancy JavaScript

hello = 'Hello'
world = 'World'
ok '#hello #world!' is '#hello #world!'
ok '#{hello} #{world}!' is '#{hello} #{world}!'
ok "#hello #world!" is 'Hello World!'
ok "#{hello} #{world}!" is 'Hello World!'
ok "[#hello#world]" is '[HelloWorld]'
ok "[#{hello}#{world}]" is '[HelloWorld]'
ok "#hello##world" is 'Hello#World'
ok "#{hello}##{world}" is 'Hello#World'
ok "Hello #{ 1 + 2 } World" is 'Hello 3 World'
ok "#hello #{ 1 + 2 } #world" is "Hello 3 World"


[s, t, r, i, n, g] = ['s', 't', 'r', 'i', 'n', 'g']
ok "#s#t#r#i#n#g" is 'string'
ok "#{s}#{t}#{r}#{i}#{n}#{g}" is 'string'
ok "\#s\#t\#r\#i\#n\#g" is '#s#t#r#i#n#g'
ok "\\#s\\#t\\#r\\#i\\#n\\#g" is '\\s\\t\\r\\i\\n\\g'
ok "\#{s}\#{t}\#{r}\#{i}\#{n}\#{g}" is '#{s}#{t}#{r}#{i}#{n}#{g}'
ok "\#string" is '#string'
ok "\#{string}" is '#{string}'


ok "\#Escaping first" is '#Escaping first'
ok "\#{Escaping} first" is '#{Escaping} first'
ok "Escaping \#in middle" is 'Escaping #in middle'
ok "Escaping \#{in} middle" is 'Escaping #{in} middle'
ok "Escaping \#last" is 'Escaping #last'
ok "Escaping \#{last}" is 'Escaping #{last}'


ok "##" is '##'
ok "#{}" is ''
ok "#{}A#{} #{} #{}B#{}" is 'A  B'
ok "\\\\\##" is '\\\\\##'
ok "\\\#{}" is '\\#{}'


ok "I won #20 last night." is 'I won #20 last night.'
ok "I won ##{20} last night." is 'I won #20 last night.'
ok "I won ##20 last night." is 'I won ##20 last night.'
ok "I won ##{'#20'} last night." is 'I won ##20 last night.'


ok "#{hello + world}" is 'HelloWorld'
ok "#{hello + ' ' + world + '!'}" is 'Hello World!'


list = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
ok "values: #{list.join(', ')}, length: #{list.length}." is 'values: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, length: 10.'
ok "values: #{list.join ' '}" is 'values: 0 1 2 3 4 5 6 7 8 9'


obj = {
  name: 'Joe'
  hi: -> "Hello #@name."
  cya: -> "Hello #@name.".replace('Hello','Goodbye')
}
ok obj.hi() is "Hello Joe."
ok obj.cya() is "Goodbye Joe."


ok "With #{"quotes"}" is 'With quotes'
ok 'With #{"quotes"}' is 'With #{"quotes"}'

ok "Where is #{obj["name"] + '?'}" is 'Where is Joe?'
ok "Where is #obj.name?" is 'Where is Joe?'

ok "Where is #{"the nested #{obj["name"]}"}?" is 'Where is the nested Joe?'
ok "Hello #{world ? "#hello"}" is 'Hello World'

ok "Hello #{"#{"#{obj["name"]}" + '!'}"}" is 'Hello Joe!'


a = """
    Hello #{ "Joe" }
    """
ok a is "Hello Joe"


a = 1
b = 2
c = 3
ok "#a#b#c" is '123'


result = null
stash = (str) -> result = str
stash "a #{ ('aa').replace /a/g, 'b' } c"
ok result is 'a bb c'


foo = "hello"
ok "#{foo.replace("\"", "")}" is 'hello'