String1 = testLex "string with backslash"
  "\"\\\\\""
  [ GoTokStr (Just "\"\\\\\"") "\\"
  , GoTokSemicolon]

te
testString1 = testLex "string with backslash"
  "\"\\\\\""
  [ GoTokStr (Just "\"\\\\\"") "\\"
  , GoTokSemicolon]
testString1 = testLex "string with backslash"
  "\"\\\\\""
  [ GoTokStr (Just "\"\\\\\"") "\\"
  , GoTokSemicolon]