a24e9bfba0
Add spec suites for stateful refs (atoms/volatiles/delays/promises), multimethods (dispatch + hierarchies), and protocols/types/records. Bugs caught and fixed: - reify with multiple methods registered only the first (stepped i by 2 over one-element specs); now collects every method spec - get-method/methods/remove-method evaluated their arg to the dispatch fn, but a multimethod's methods live on its var — now resolve the var (get-method and methods are special forms; remove-method fixed). get-method/methods added. - no global hierarchy: 2-arg derive modified a throwaway, isa? was hardcoded false, parents missing, ancestors/descendants returned arrays (so contains? failed), and dispatch ignored derive. Now a global hierarchy backs the 1/2-arg derive/isa?/parents/ancestors/descendants (returning sets) and multimethod dispatch falls back to it. Corrected a phase5 port assertion that encoded the old isa? bug. conformance 218/218, jpm test green.
75 lines
3.3 KiB
Text
75 lines
3.3 KiB
Text
# Phase 5: Multimethods + Hierarchy Tests
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(use ../../../src/jolt/api)
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(defn ct-eval [ctx s] (normalize-pvecs (eval-string ctx s)))
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# 22. Hierarchy
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(print "22: hierarchy...")
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(let [ctx (init)]
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(assert (= true (ct-eval ctx "(map? (make-hierarchy))")) "make-hierarchy returns map")
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# 2-arity derive/isa? use the global hierarchy
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(ct-eval ctx "(derive ::square ::shape)")
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(assert (= true (ct-eval ctx "(isa? ::square ::shape)")) "isa? 2-arity via global hierarchy")
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(assert (= true (ct-eval ctx "(isa? ::square ::square)")) "isa? reflexive"))
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(print " passed")
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# 23. Multimethods — basic dispatch
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(print "23: basic multimethod dispatch...")
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(let [ctx (init)]
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(ct-eval ctx "(defmulti greet (fn [x] (:lang x)))")
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(ct-eval ctx "(defmethod greet :en [_] \"hello\")")
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(ct-eval ctx "(defmethod greet :fr [_] \"bonjour\")")
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(assert (= "hello" (ct-eval ctx "(greet {:lang :en})")) "dispatch :en")
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(assert (= "bonjour" (ct-eval ctx "(greet {:lang :fr})")) "dispatch :fr")
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(assert (ct-eval ctx "(try (greet {:lang :es}) (catch Exception e true))") "missing dispatch errors"))
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(print " passed")
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# 24. Multimethods — :default dispatch
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(print "24: :default dispatch...")
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(let [ctx (init)]
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(ct-eval ctx "(defmulti classify :type :default :unknown)")
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(ct-eval ctx "(defmethod classify :a [_] :alpha)")
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# :default :unknown renames the catch-all dispatch key; a method must be
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# registered under it (Clojure semantics).
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(ct-eval ctx "(defmethod classify :unknown [_] :unknown)")
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(assert (= :alpha (ct-eval ctx "(classify {:type :a})")) "known dispatch")
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(assert (= :unknown (ct-eval ctx "(classify {:type :z})")) "default fallback"))
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(print " passed")
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# 25. Multimethods — hierarchy dispatch
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(print "25: hierarchy dispatch...")
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(let [ctx (init)]
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(ct-eval ctx "(def h (make-hierarchy))")
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(ct-eval ctx "(def h (derive h ::dog ::mammal))")
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(ct-eval ctx "(def h (derive h ::mammal ::animal))")
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(ct-eval ctx "(defmulti animal-sound (fn [x] x) :default :unknown :hierarchy h)")
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(ct-eval ctx "(defmethod animal-sound ::animal [_] \"rawr\")")
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(ct-eval ctx "(defmethod animal-sound ::dog [_] \"woof\")")
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# catch-all method registered under the renamed default key :unknown
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(ct-eval ctx "(defmethod animal-sound :unknown [_] :unknown)")
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(assert (= "woof" (ct-eval ctx "(animal-sound ::dog)")) "direct dispatch")
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(assert (= "rawr" (ct-eval ctx "(animal-sound ::mammal)")) "hierarchy fallback")
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(assert (= :unknown (ct-eval ctx "(animal-sound ::rock)")) "default fallback"))
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(print " passed")
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# 26. remove-method
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(print "26: remove-method...")
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(let [ctx (init)]
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(ct-eval ctx "(defmulti rmtest :k)")
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(ct-eval ctx "(defmethod rmtest :a [_] 1)")
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(ct-eval ctx "(defmethod rmtest :b [_] 2)")
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(assert (= 1 (ct-eval ctx "(rmtest {:k :a})")) "before remove")
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(ct-eval ctx "(remove-method (var rmtest) :a)")
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(assert (ct-eval ctx "(try (rmtest {:k :a}) (catch Exception e true))") "removed method errors"))
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(print " passed")
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# 27. remove-all-methods
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(print "27: remove-all-methods...")
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(let [ctx (init)]
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(ct-eval ctx "(defmulti alltest :k)")
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(ct-eval ctx "(defmethod alltest :a [_] 1)")
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(ct-eval ctx "(defmethod alltest :b [_] 2)")
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(ct-eval ctx "(remove-all-methods (var alltest))")
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(assert (ct-eval ctx "(try (alltest {:k :a}) (catch Exception e true))") "all methods removed errors"))
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(print " passed")
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(print "\nAll Phase 5 tests passed!")
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