/
core.clj
775 lines (683 loc) · 18.5 KB
/
core.clj
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(ns clojure.core.match.test.core
(:refer-clojure :exclude [compile])
(:use clojure.core.match.protocols
clojure.core.match
clojure.core.match.debug
clojure.core.match.regex)
(:use [clojure.test]))
(deftest pattern-match-1
(is (= (let [x true
y true
z true]
(match [x y z]
[_ false true] 1
[false true _ ] 2
[_ _ false] 3
[_ _ true] 4
:else 5))
4)))
(deftest pattern-match-recur-1
(is (= ((fn [x y z done]
(if (not done)
(match [x y z]
[_ false true] (recur x y z 1)
[false true _ ] (recur x y z 2)
[_ _ false] (recur x y z 3)
[_ _ true] (recur x y z 4)
:else 5)
done)) true true true false)
4)))
(deftest pattern-match-bind-1
(is (= (let [x 1 y 2 z 4]
(match [x y z]
[1 2 b] [:a0 b]
[a 2 4] [:a1 a]
:else []))
[:a0 4])))
(deftest seq-pattern-match-1
(is (= (let [x [1]]
(match [x]
[1] 1
[([1] :seq)] 2
:else []))
2)))
(deftest seq-pattern-match-2
(is (= (let [x [1 2 nil nil nil]]
(match [x]
[([1] :seq)] :a0
[([1 2] :seq)] :a1
[([1 2 nil nil nil] :seq)] :a2
:else []))
:a2)))
(deftest seq-pattern-match-bind-1
(is (= (let [x '(1 2 4)
y nil
z nil]
(match [x y z]
[([1 2 b] :seq) _ _] [:a0 b]
[([a 2 4] :seq) _ _] [:a1 a]
:else []))
[:a0 4])))
(deftest seq-pattern-match-wildcard-row
(is (= (let [x '(1 2 3)]
(match [x]
[([1 z 4] :seq)] z
[([_ _ _] :seq)] :a2
:else [])
:a2))))
(deftest map-pattern-match-1
(is (= (let [x {:a 1 :b 1}]
(match [x]
[{:a _ :b 2}] :a0
[{:a 1 :b 1}] :a1
[{:c 3 :d _ :e 4}] :a2
:else nil))
:a1))
(is (= (let [x {:a 1 :b 2}]
(match [x]
[{:a _ :b 2}] :a0
[{:a 1 :b 1}] :a1
[{:c 3 :d _ :e 4}] :a2
:else nil))
:a0))
(is (= (let [x {:c 3 :d 9 :e 4}]
(match [x]
[{:a _ :b 2}] :a0
[{:a 1 :b 1}] :a1
[{:c 3 :d _ :e 4}] :a2
:else nil))
:a2))
(is (= (let [x {:c 3 :e 4}]
(match [x]
[{:a _ :b 2}] :a0
[{:a 1 :b 1}] :a1
[{:c 3 :d _ :e 4}] :a2
:else nil))
nil)))
(deftest map-pattern-match-2
(is (= (let [x {:a 1 :b 1}]
(match [x]
[{:a _ :b 1}] :a0
[{:a 1 :b _}] :a1
[{:c 3 :d _ :e 4}] :a2
:else []))
:a0)))
(deftest map-pattern-match-3
(is (= (let [x {:a 1 :b 1 :c 1}]
(match [x]
[{:a _ :b 2}] :a0
[{:a 1 :b _}] :a1
[{:c 3 :d _ :e 4}] :a2
:else []))
:a1)))
(deftest map-pattern-match-4
(is (= (let [x {:a 1 :b 1}]
(match [x]
[{:a _ :b 2}] :a0
[{:a _ :b _}] :a1
[{:c 3 :d _ :e 4}] :a2
:else []))
:a1)))
(deftest map-pattern-match-5
(is (= (let [x {:a 1}]
(match [x]
[{:a 1 :b 1}] :a0
[{:a _ :b _}] :a1
[{:c 3 :d _ :e 4}] :a2
:else []))
[])))
(deftest map-pattern-match-6
(is (= (let [x {:a 1 :b 1}]
(match [x]
[{:b 1}] :a0
[{:a _ :b _}] :a1
[{:a _ :b _}] :a2
:else []))
:a0)))
(deftest map-pattern-match-7
(is (= (let [x {:a 1 :b 1}]
(match [x]
[{}] :a0
[{:a _ :b _}] :a1
[{:a 1 :b 1}] :a2
:else []))
:a0)))
(deftest map-pattern-match-8
(is (= (let [x {:a 1 :b 1}]
(match [x]
[{:x nil :y nil}] :a0
[{:a _ :b _}] :a1
[{:a 1 :b 1}] :a2
:else []))
:a1)))
(deftest map-pattern-match-only-1
(is (= (let [x {:a 1 :b 2}]
(match [x]
[({:a _ :b 2} :only [:a :b])] :a0
[{:a 1 :c _}] :a1
[{:c 3 :d _ :e 4}] :a2
:else []))
:a0))
(is (= (let [x {:a 1 :b 2 :c 3}]
(match [x]
[({:a _ :b 2} :only [:a :b])] :a0
[{:a 1 :c _}] :a1
[{:c 3 :d _ :e 4}] :a2
:else []))
:a1)))
(deftest map-pattern-match-bind-1
(is (= (let [x {:a 1 :b 2}]
(match [x]
[{:a a :b b}] [:a0 a b]
:else []))
[:a0 1 2])))
(deftest seq-pattern-match-empty-1
(is (= (let [x '()]
(match [x]
[([] :seq)] :a0
[([1 & r] :seq)] [:a1 r]
:else []))
:a0)))
(deftest seq-pattern-match-rest-1
(is (= (let [x '(1 2)]
(match [x]
[([1] :seq)] :a0
[([1 & r] :seq)] [:a1 r]
:else []))
[:a1 '(2)])))
;; FIXME: stack overflow if vector pattern - David
(deftest seq-pattern-match-rest-2
(is (= (let [x '(1 2 3 4)]
(match [x]
[([1] :seq)] :a0
[([_ 2 & ([a & b] :seq)] :seq)] [:a1 a b]
:else []))
[:a1 3 '(4)])))
(deftest or-pattern-match-1
(is (= (let [x 4 y 6 z 9]
(match [x y z]
[(:or 1 2 3) _ _] :a0
[4 (:or 5 6 7) _] :a1
:else []))
:a1)))
(deftest or-pattern-match-seq-1
(is (= (let [x '(1 2 3)
y nil
z nil]
(match [x y z]
[([1 (:or 3 4) 3] :seq) _ _] :a0
[([1 (:or 2 3) 3] :seq) _ _] :a1
:else []))
:a1)))
(deftest or-pattern-match-map-2
(is (= (let [x {:a 3}
y nil
z nil]
(match [x y z]
[{:a (:or 1 2)} _ _] :a0
[{:a (:or 3 4)} _ _] :a1
:else []))
:a1)))
(defn div3? [n]
(= (mod n 3) 0))
(defpred even?)
(defpred odd?)
(defpred div3?)
(deftest guard-pattern-match-1
(is (= (let [y '(2 3 4 5)]
(match [y]
[([_ (a :when even?) _ _] :seq)] :a0
[([_ (b :when [odd? div3?]) _ _] :seq)] :a1
:else []))
:a1)))
;; like guard-pattern-match-1 but uses 'flattened' syntax for guard
(deftest guard-pattern-match-2
(is (= (let [y '(2 3 4 5)]
(match [y]
[([_ a :when even? _ _] :seq)] :a0
[([_ b :when [odd? div3?] _ _] :seq)] :a1
:else []))
:a1)))
;; uses 'flattened' syntax for guard
(deftest guard-pattern-match-3
(is (= (let [x 2 y 3 z [4 5]]
(match [x y z]
[a :when even? _ [b c] :as d] (+ (first d) c)
[_ b :when [odd? div3?] _] :a1
:else []))
9)))
(deftest guard-pattern-match-4
(is (= (match [1 2]
[(a :guard #(odd? %)) (b :when odd?)] :a1
[(a :guard #(odd? %)) _] :a2
[_ (b :when even?)] :a3
:else :a4)
:a2)))
(deftest guard-pattern-match-5
(is (=
(let [oddp odd?]
(match [1 2]
[a :guard odd? b :when odd?] :a1
[a :guard oddp _] :a2
[_ b :when even?] :a3
:else :a4))
:a2)))
(deftest unequal-equal-tests
(is (=
(match ["foo" "bar"]
[#".*" #"baz"] :a1
[#"foo" _] :a2
[_ "bar"] :a3
:else :a4)
:a2)))
(deftest unequal-equal-tests-2
(is (=
(let [a 1 b 1]
(match [1 2]
[a 3] :a1
[1 2] :a2
[2 _] :a5
[_ 3] :a4
:else :a3))
:a2)))
;; use ':when pattern to match literal :when (as opposed to guard syntax)
(deftest literal-when-match-1
(is (= (let [x :as y :when z 1]
(match [x y z]
[a ':when 1] :success
[:as _ 2] :fail
:else :fail))
:success)))
(deftest same-symbol-using-guards
(is (= (let [e '(+ 1 (+ 2 3))
op (first e)
op? #(= % op)]
(match [e]
[([p :guard op? x ([p2 :guard op? y z] :seq)] :seq)] (list p x y z)))
'(+ 1 2 3))))
(deftest quoted-symbol
(is (= (let [e '(+ 1 (+ 2 3))]
(match [e]
[(['+ x (['+ y z] :seq)] :seq)] (list '+ x y z)))
'(+ 1 2 3))))
(deftest literal-quote
(is (= (let [e 'quote
f 10]
(match [e f]
['quote quote] quote))
10)))
(deftest literal-quote-seq
(is (= (let [e '(:a (quote 10))]
(match [e]
[([quote (['quote 10] :seq)] :seq)] quote))
:a)))
(extend-type java.util.Date
IMatchLookup
(val-at [this k not-found]
(case k
:year (.getYear this)
:month (.getMonth this)
:date (.getDate this)
:hours (.getHours this)
:minutes (.getMinutes this)
not-found)))
(deftest map-pattern-interop-1
(is (= (let [d (java.util.Date. 2010 10 1 12 30)]
(match [d]
[{:year 2009 :month a}] [:a0 a]
[{:year (:or 2010 2011) :month b}] [:a1 b]
:else []))
[:a1 10])))
(deftest map-pattern-ocr-order-1
(is (= (let [v [{:a 1} 2]]
(match [v]
[[{:a 2} 2]] :a0
[[{:a _} 2]] :a1
:else []))
:a1)))
(deftest as-pattern-match-1
(is (= (let [v [[1 2]]]
(match [v]
[([3 1] :seq)] :a0
[([(([1 a] :seq) :as b)] :seq)] [:a1 a b]
:else []))
[:a1 2 [1 2]])))
(deftest else-clause-1
(is (= (let [v [1]]
(match [v]
[2] 1
:else 21))
21)))
(deftest else-clause-seq-pattern-1
(is (= (let [v [[1 2]]]
(match [v]
[([1 3] :seq)] 1
:else 21))
21)))
(deftest else-clause-map-pattern-1
(is (= (let [v {:a 1}]
(match [v]
[{:a a}] 1
:else 21))
1)))
(deftest else-clause-guard-pattern-1
(is (= (let [v 1]
(match [v]
[(_ :when even?)] 1
:else 21))
21)))
(deftest else-clause-or-pattern-1
(is (= (let [v 3]
(match [v]
[(:or 1 2)] :a0
:else :a1))
:a1)))
(deftest match-expr-1
(is (= (->> (range 1 16)
(map (fn [x]
(match [(mod x 3) (mod x 5)]
[0 0] "FizzBuzz"
[0 _] "Fizz"
[_ 0] "Buzz"
:else (str x)))))
'("1" "2" "Fizz" "4" "Buzz" "Fizz" "7" "8" "Fizz" "Buzz" "11" "Fizz" "13" "14" "FizzBuzz"))))
(deftest match-single-1
(is (= (let [x 3]
(match x
1 :a0
2 :a1
:else :a2))
:a2)))
(deftest match-single-2
(is (= (let [x 3]
(match (mod x 2)
1 :a0
2 :a1
:else :a2))
:a0)))
;; TODO: this needs to wait for backtracking. GuardPatterns need to be grouped w/
;; whatever pattern they actually contain - David
(comment
(deftest match-single-3
(is (= (let [x [1 2]]
(match x
[2 1] :a0
(_ :when #(= (count %) 2)) :a1
:else :a2))
:a1)))
)
(deftest match-local-1
(is (= (let [x 2
y 2]
(match [x]
[0] :a0
[1] :a1
[y] :a2
:else :a3))
:a2)))
(deftest match-local-2
(is (= (let [x 2]
(match [x]
[0] :a0
[1] :a1
[2] :a2
:else :a3))
:a2)))
(deftest match-local-3
(is (= (let [a 1]
(match [1 2]
[1 3] :a0
[a 2] :a1
:else :a2))
:a1)))
(deftest basic-regex
(is (= (match ["asdf"]
[#"asdf"] 1
:else 2)
1)))
(deftest test-false-expr-works-1
(is (= (match [true false]
[true false] 1
[false true] 2
:else (throw (Exception. "Shouldn't be here")))
1)))
(deftest test-lazy-source-case-1
(is (= (let [x [1 2]]
(match [x]
[(:or [1 2] [3 4] [5 6] [7 8] [9 10])] :a0
:else (throw (Exception. "Shouldn't be here"))))
:a0)))
(deftest test-wildcard-local-1
(is (= (let [_ 1
x 2
y 3]
(match [x y]
[1 1] :a0
[_ 2] :a1
[2 3] :a2
:else :a3))
:a2)))
(deftest vector-pattern-match-1
(is (= (let [x [1 2 3]]
(match [x]
[([_ _ 2] ::clojure.core.match/vector)] :a0
[([1 1 3] ::clojure.core.match/vector)] :a1
[([1 2 3] ::clojure.core.match/vector)] :a2
:else :a3))
:a2)))
(deftest red-black-tree-pattern-1
(is (= (let [n [:black [:red [:red 1 2 3] 3 4] 5 6]]
(match [n]
[(:or [:black [:red [:red a x b] y c] z d]
[:black [:red a x [:red b y c]] z d]
[:black a x [:red [:red b y c] z d]]
[:black a x [:red b y [:red c z d]]])] :balance
:else :valid))
:balance)))
(deftest vector-pattern-rest-1
(is (= (let [v [1 2 3 4]]
(match [v]
[([1 1 3 & r] ::clojure.core.match/vector)] :a0
[([1 2 4 & r] ::clojure.core.match/vector)] :a1
[([1 2 3 & r] ::clojure.core.match/vector)] :a2
:else :a3))
:a2)))
(deftest vector-pattern-rest-2
(is (= (let [v [1 2 3 4]]
(let [v [1 2 3 4]]
(match [v]
[([1 1 3 & r] ::clojure.core.match/vector)] :a0
[([1 2 & r] ::clojure.core.match/vector)] :a1
:else :a3)))
:a1)))
(deftest vector-bind-1
(is (= (let [node 1]
(match [node]
[[1]] :a0
[a] a
:else :a1))
1)))
(deftest empty-vector-1
(is (= (let [v []]
(match [v]
[[]] 1
:else 2))
1)))
(deftest empty-vector-2
(is (= (let [v [1 2]]
(match [v]
[[]] :a0
[[x & r]] :a1
:else :a2))
:a1)))
(deftest vector-pattern-length-1
(is (= (let [v [[1 2]]]
(match [v]
[[3 1]] :a0
[[([1 a] :as b)]] [:a1 a b]
:else :a2))
[:a1 2 [1 2]])))
(deftest seq-infer-rest-1
(is (= (let [l '(1 2 3)]
(match [l]
[([a & [b & [c]]] :seq)] :a0
:else :a1))
:a0)))
(deftest vector-offset-1
(is (= (match [[:pow :x 2]]
[[:pow arg pow]] 0
[[:mult & args]] 1
:else 2)
0)))
(deftest match-expr-2
(is (= (match [false]
[false] true)
true)))
(deftest vector-rest-pattern-1
(is (= (match [[:plus 1 2 3]]
[[:pow arg pow]] 0
[[:plus & args]] 1
:else 2))
1))
(deftest map-pattern-match-only-2
(is (= (let [x {:a 1 :b 2 :c 10 :d 30}]
(match [x]
[({:a _ :b _ :c _ :d _} :only [:a :b :c :d])] :a-1
[({:a _ :b 2} :only [:a :b])] :a0
[{:a 1 :c _}] :a1
[{:c 3 :d _ :e 4}] :a2
:else []))
:a-1)))
(deftest map-pattern-match-only-3
(is (and (= (let [m {:a 1}]
(match [m]
[({:a 1} :only [:a])] :a0
:else :a1))
:a0)
(= (let [m {:a 1 :b 2}]
(match [m]
[({:a 1} :only [:a])] :a0
:else :a1))
:a1))))
(deftest map-pattern-heterogenous-keys-1
(is (= (let [m {:foo 1 "bar" 2}]
(match [m]
[{:foo 1 "bar" 2}] :a0
:else :a1))
:a0)))
(deftest exception-1
(is (= (try
(match :a :a (throw (Exception.)) :else :c)
(catch Exception e
:d))
:d)))
(deftest match-order-1
(is (= (let [x '(1 2) y 1]
(match [x y]
[([1] :seq) _] :a0
[_ 1] :a1
[([1 2] :seq) _] :a2
[_ 2] :a3
:else :a4))
:a1))
(is (= (let [x '(1 2) y 1]
(match [x y]
[([1] :seq) _] :a0
[([1 2] :seq) _] :a2
[_ 1] :a1
[_ 2] :a3
:else :a4))
:a2)))
(deftest match-order-2
(is (= (let [x '(1 2) y 3]
(match [x y]
[([1] :seq) _] :a0
[_ 1] :a1
[([1 2] :seq) _] :a2
[_ 2] :a3
:else :a4))
:a2)))
(deftest match-order-3
(is (= (let [x '(1) y 3]
(match [x y]
[([1] :seq) _] :a0
[_ 1] :a1
[([1 2] :seq) _] :a2
[_ 2] :a3
:else :a4))
:a0)))
(deftest match-order-4
(is (= (let [x '(1 2 3) y 2]
(match [x y]
[([1] :seq) _] :a0
[_ 1] :a1
[([1 2] :seq) _] :a2
[_ 2] :a3
:else :a4))
:a3)))
(deftest match-order-5
(is (= (match [["foo"]]
[["foo"]] :a0
[["foo" a]] :a1
[["baz"]] :a2
[["baz" a b]] :a3
:else :a4)
:a0)))
(deftest match-order-6
(is (= (match [[2]]
[[1]] :a0
[1] :a1
[[2]] :a2
[2] :a3
:else :a4)
:a2)))
(deftest match-order-6-recur
(is (= ((fn [x done]
(if done
done
(match [x]
[[1]] (recur x :a0)
[1] (recur x :a1)
[[2]] (recur x :a2)
[2] (recur x :a3)
:else :a4))) [2] false)
:a2)))
(deftest match-order-7
(is (= (match [[2]]
[1] :a0
[[1]] :a1
[2] :a2
[[2]] :a3
:else :a4)
:a3)))
(deftest match-order-8
(is (= (let [xs [:c]]
(match xs
[:a] :a0
[:b b] :a1
[:c] :a2
:else :a3))
:a2)))
;; =============================================================================
;; Tickets
(deftest match-66
(is (= (match 3 x x) 3))
(is (= (match 'my-sym a a) 'my-sym)))
(deftest match-70
(is (= (let [xqq {:cz 1 :dz 2}]
(match [xqq]
[{:z a :zz b}] [:a0 a b]
[{:cz a :dz b}] [:a2 a b]
:else []))
[:a2 1 2]))
(is (= (let [xmm {:bz 2}]
(match [xmm]
[{:az a}] [:a0 a]
[{:bz b}] [:a1 b]
:else []))
[:a1 2])))
(deftest match-51
(is (= (match (vector)
([(re :guard string?)] :seq) 4
[] 6)
6)))