;; -*- compile-command: "guile -L ./src ./src/unit-tests/lexer/lexer-test.scm"; -*-
(use-modules (srfi srfi-64)
             (modules lexer lexer))

(define (read-this str)
  (set-current-input-port
   (open-input-string str)))


(test-begin "lexer-harness")


(test-equal "empty string"
  '()
  (begin
    (read-this "")
    (read-tokens)))

(test-equal "("
  '(left-paren)
  (begin
    (read-this "(")
    (read-tokens)))

(test-equal "(("
  '(left-paren left-paren)
  (begin
    (read-this "((")
    (read-tokens)))

(test-equal "( )"
  '(left-paren right-paren)
  (begin
    (read-this "( )")
    (read-tokens)))

(test-equal "( {;} {((};})"
  '(left-paren open-brace semi-colon close-brace open-brace left-paren left-paren close-brace semi-colon close-brace right-paren)
  (begin
    (read-this "( {;} {((};})")
    (read-tokens)))

(test-equal "1"
  '(1)
  (begin
    (read-this "1")
    (read-tokens)))

(test-equal "0"
  '(0)
  (begin
    (read-this "0")
    (read-tokens)))

(test-equal "0011001"
  '(11001)
  (begin
    (read-this "0011001")
    (read-tokens)))

(test-equal "12 {34"
  '(12 open-brace 34)
  (begin
    (read-this "12 {34")
    (read-tokens)))

(test-equal "34;"
  '(34 semi-colon)
  (begin
    (read-this "34;")
    (read-tokens)))


(test-error "3.4"
	    (begin
	      (read-this "3.4")
	      (read-tokens)))

(test-equal "a"
  '("a")
  (begin
    (read-this "a")
    (read-tokens)))

(test-equal "a_2"
  '("a_2")
  (begin
    (read-this "a_2")
    (read-tokens)))

(test-error "1foo"
	    (begin
	      (read-this "1foo")
	      (read-tokens)))

(test-equal "int main(void) {return 2;}"
  '("int" "main" left-paren "void" right-paren open-brace "return" 2 semi-colon close-brace)
  (begin
    (read-this "int main(void) {return 2;}")
    (read-tokens)))


(test-end "lexer-harness")