janet/test/suite3.janet

# Copyright (c) 2019 Calvin Rose
#
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(import test/helper :prefix "" :exit true)
(start-suite 3)

(assert (= (length (range 10)) 10) "(range 10)")
(assert (= (length (range 1 10)) 9) "(range 1 10)")
(assert (deep= @{:a 1 :b 2 :c 3} (zipcoll '[:a :b :c] '[1 2 3])) "zipcoll")

(def- a 100)
(assert (= a 100) "def-")

(assert (= :first
          (match @[1 3 5]
                 @[x y z] :first
                 :second)) "match 1")

(def val1 :avalue)
(assert (= :second
          (match val1
                 @[x y z] :first
                 :avalue :second
                 :third)) "match 2")

(assert (= 100
           (match @[50 40]
                  @[x x] (* x 3)
                  @[x y] (+ x y 10)
                  0)) "match 3")

# Edge case should cause old compilers to fail due to
# if statement optimization
(var var-a 1)
(var var-b (if false 2 (string "hello")))

(assert (= var-b "hello") "regression 1")

# Some macros

(assert (= 2 (if-not 1 3 2)) "if-not 1")
(assert (= 3 (if-not false 3)) "if-not 2")
(assert (= 3 (if-not nil 3 2)) "if-not 3")
(assert (= nil (if-not true 3)) "if-not 4")

(assert (= 4 (unless false (+ 1 2 3) 4)) "unless")

(def res @{})
(loop [[k v] :pairs @{1 2 3 4 5 6}]
  (put res k v))
(assert (and
          (= (get res 1) 2)
          (= (get res 3) 4)
          (= (get res 5) 6)) "loop :pairs")

# Another regression test - no segfaults
(defn afn [x] x)
(assert (= 1 (try (afn) ([err] 1))) "bad arity 1")
(assert (= 4 (try ((fn [x y] (+ x y)) 1) ([_] 4))) "bad arity 2")
(assert (= 1 (try (identity) ([err] 1))) "bad arity 3")
(assert (= 1 (try (map) ([err] 1))) "bad arity 4")
(assert (= 1 (try (not) ([err] 1))) "bad arity 5")

# Assembly test
# Fibonacci sequence, implemented with naive recursion.
(def fibasm (asm '{
  arity 1
  bytecode [
    (ltim 1 0 0x2)      # $1 = $0 < 2
    (jmpif 1 :done)     # if ($1) goto :done
    (lds 1)             # $1 = self
    (addim 0 0 -0x1)    # $0 = $0 - 1
    (push 0)            # push($0), push argument for next function call
    (call 2 1)          # $2 = call($1)
    (addim 0 0 -0x1)    # $0 = $0 - 1
    (push 0)            # push($0)
    (call 0 1)          # $0 = call($1)
    (add 0 0 2)        # $0 = $0 + $2 (integers)
    :done
    (ret 0)             # return $0
  ]
}))

(assert (= 0 (fibasm 0)) "fibasm 1")
(assert (= 1 (fibasm 1)) "fibasm 2")
(assert (= 55 (fibasm 10)) "fibasm 3")
(assert (= 6765 (fibasm 20)) "fibasm 4")

# Calling non functions

(assert (= 1 ({:ok 1} :ok)) "calling struct")
(assert (= 2 (@{:ok 2} :ok)) "calling table")
(assert (= :bad (try (@{:ok 2} :ok :no) ([err] :bad))) "calling table too many arguments")
(assert (= :bad (try (:ok @{:ok 2} :no) ([err] :bad))) "calling keyword too many arguments")
(assert (= :oops (try (1 1) ([err] :oops))) "calling number fails")

# Method test

(def Dog @{:bark (fn bark [self what] (string (self :name) " says " what "!"))})
(defn make-dog
  [name]
  (table/setproto @{:name name} Dog))

(assert (= "fido" ((make-dog "fido") :name)) "oo 1")
(def spot (make-dog "spot"))
(assert (= "spot says hi!" (:bark spot "hi")) "oo 2")

# Negative tests

(assert-error "+ check types" (+ 1 ()))
(assert-error "- check types" (- 1 ()))
(assert-error "* check types" (* 1 ()))
(assert-error "/ check types" (/ 1 ()))
(assert-error "band check types" (band 1 ()))
(assert-error "bor check types" (bor 1 ()))
(assert-error "bxor check types" (bxor 1 ()))
(assert-error "bnot check types" (bnot ()))

# Buffer blitting

(def b (buffer/new-filled 100))
(buffer/bit-set b 100)
(buffer/bit-clear b 100)
(assert (zero? (sum b)) "buffer bit set and clear")
(buffer/bit-toggle b 101)
(assert (= 32 (sum b)) "buffer bit set and clear")

(def b2 @"hello world")

(buffer/blit b2 "joyto ")
(assert (= (string b2) "joyto world") "buffer/blit 1")

(buffer/blit b2 "joyto" 6)
(assert (= (string b2) "joyto joyto") "buffer/blit 2")

(buffer/blit b2 "abcdefg" 5 6)
(assert (= (string b2) "joytogjoyto") "buffer/blit 3")

# Peg

(def ip-address
  '{:d (range "09")
    :0-4 (range "04")
    :0-5 (range "05")
    :block (+ (* "25" :0-5) (* "2" :0-4 :d) (* "1" :d :d) (* :d (at-most 1 :d)))
    :main (* :block (between 3 3 (* "." :block)))})

(assert (peg/match ip-address "0.0.0.0") "peg/match 1")
(assert (peg/match ip-address "1.2.3.4") "peg/match 2")
(assert (not (peg/match ip-address "256.2.3.4")) "peg/match 3")

(end-suite)