estCharLit1 = testLex "rune literal for backslash"
  "'\\\\'"
  [ GoTokChar (Just "'\\\\'") '\\'
  , GoTokSemicolon]

testCharLit1 = testLex "rune literal for backslash"
  "'\\\\'"
  [ GoTokChar (Just "'\\\\'") '\\'
  , GoTokSemicolon]
testCharLit1 = testLex "rune literal for backslash"
  "'\\\\'"
  [ GoTokChar (Just "'\\\\'") '\\'
  , GoTokSemicolon]