Add strict typing mode + 139 new tests: 749/749 passing
Strict mode (spec/eval.sx):
- *strict* flag, set-strict!, set-prim-param-types!
- value-matches-type? checks values against declared types
- strict-check-args validates primitive call args at runtime
- Injected into eval-call before apply — zero cost when off
- Supports positional params, rest-type, nullable ("string?")
New test files:
- test-strict.sx (25): value-matches-type?, toggle, 12 type error cases
- test-errors.sx (74): undefined symbols, arity, permissive coercion,
strict type mismatches, nil/empty edge cases, number edge cases,
string edge cases, recursion patterns
- test-advanced.sx (39): nested special forms, higher-order patterns,
define patterns, quasiquote advanced, thread-first, letrec, case/cond
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This commit is contained in:
89
spec/eval.sx
89
spec/eval.sx
@@ -68,6 +68,89 @@
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result)))))
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;; --------------------------------------------------------------------------
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;; 2b. Strict mode — runtime type checking for primitive calls
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;; --------------------------------------------------------------------------
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;;
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;; When *strict* is true, primitive calls check arg types before dispatch.
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;; The primitive param type registry maps name → {positional [[name type]...],
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;; rest-type type-or-nil}. Stored in *prim-param-types* in the env.
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;;
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;; Strict mode is off by default. Hosts can enable it at startup via:
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;; (set-strict! true)
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;; (set-prim-param-types! types-dict)
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(define *strict* false)
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(define set-strict!
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(fn (val)
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(set! *strict* val)))
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(define *prim-param-types* nil)
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(define set-prim-param-types!
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(fn (types)
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(set! *prim-param-types* types)))
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(define value-matches-type?
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(fn (val expected-type)
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;; Check if a runtime value matches a declared type string.
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(cond
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(= expected-type "any") true
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(= expected-type "number") (number? val)
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(= expected-type "string") (string? val)
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(= expected-type "boolean") (boolean? val)
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(= expected-type "nil") (nil? val)
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(= expected-type "list") (list? val)
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(= expected-type "dict") (dict? val)
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(= expected-type "lambda") (lambda? val)
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(= expected-type "symbol") (= (type-of val) "symbol")
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(= expected-type "keyword") (= (type-of val) "keyword")
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;; Nullable: "string?" means string or nil
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(and (string? expected-type)
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(ends-with? expected-type "?"))
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(or (nil? val)
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(value-matches-type? val (slice expected-type 0 (- (string-length expected-type) 1))))
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:else true)))
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(define strict-check-args
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(fn (name args)
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;; Check args against *prim-param-types* if strict mode is on.
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;; Throws on type violation. No-op if *strict* is false or types not registered.
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(when (and *strict* *prim-param-types*)
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(let ((spec (get *prim-param-types* name)))
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(when spec
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(let ((positional (get spec "positional"))
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(rest-type (get spec "rest-type")))
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;; Check positional params
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(when positional
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(for-each
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(fn (pair)
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(let ((idx (first pair))
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(param (nth pair 1))
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(p-name (first param))
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(p-type (nth param 1)))
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(when (< idx (len args))
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(let ((val (nth args idx)))
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(when (not (value-matches-type? val p-type))
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(error (str "Type error: " name " expected " p-type
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" for param " p-name
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", got " (type-of val) " (" (str val) ")")))))))
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(map-indexed (fn (i p) (list i p)) positional)))
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;; Check rest args
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(when (and rest-type (> (len args) (len (or positional (list)))))
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(for-each
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(fn (pair)
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(let ((idx (first pair))
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(val (nth pair 1)))
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(when (not (value-matches-type? val rest-type))
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(error (str "Type error: " name " expected " rest-type
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" for rest arg " idx
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", got " (type-of val) " (" (str val) ")")))))
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(map-indexed (fn (i v) (list i v))
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(slice args (len (or positional (list)))))))))))))
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;; --------------------------------------------------------------------------
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;; 3. Core evaluator
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;; --------------------------------------------------------------------------
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@@ -201,7 +284,11 @@
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(cond
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;; Native callable (primitive function)
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(and (callable? f) (not (lambda? f)) (not (component? f)) (not (island? f)))
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(apply f evaluated-args)
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(do
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;; Strict mode: check arg types before dispatch
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(when (and *strict* (= (type-of head) "symbol"))
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(strict-check-args (symbol-name head) evaluated-args))
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(apply f evaluated-args))
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;; Lambda
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(lambda? f)
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371
spec/tests/test-advanced.sx
Normal file
371
spec/tests/test-advanced.sx
Normal file
@@ -0,0 +1,371 @@
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;; ==========================================================================
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;; test-advanced.sx — Tests for advanced evaluation patterns
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;;
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;; Requires: test-framework.sx loaded first.
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;; Modules tested: eval.sx (nested forms, higher-order patterns, define,
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;; quasiquote, thread-first, letrec, case/cond)
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;; ==========================================================================
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;; --------------------------------------------------------------------------
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;; Nested special forms
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;; --------------------------------------------------------------------------
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(defsuite "nested-special-forms"
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(deftest "let inside let"
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(let ((x 1))
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(let ((y (let ((z 10)) (+ x z))))
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(assert-equal 11 y))))
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(deftest "if inside let"
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(let ((flag true)
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(result (if true "yes" "no")))
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(assert-equal "yes" result))
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(let ((result (if false "yes" "no")))
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(assert-equal "no" result)))
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(deftest "let inside if"
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(assert-equal 15
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(if true
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(let ((a 5) (b 10)) (+ a b))
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0))
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(assert-equal 0
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(if false
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99
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(let ((x 0)) x))))
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(deftest "cond inside let"
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(let ((n 2)
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(label (cond (= 2 1) "one"
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(= 2 2) "two"
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:else "other")))
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(assert-equal "two" label)))
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(deftest "when inside when (nested conditional)"
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;; Inner when only runs when outer when runs
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(let ((result "none"))
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(when true
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(when true
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(set! result "both")))
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(assert-equal "both" result))
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(let ((result "none"))
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(when true
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(when false
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(set! result "inner")))
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(assert-equal "none" result))
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(let ((result "none"))
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(when false
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(when true
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(set! result "inner")))
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(assert-equal "none" result)))
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(deftest "do inside let body"
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(let ((x 0))
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(do
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(set! x (+ x 1))
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(set! x (+ x 1))
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(set! x (+ x 1)))
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(assert-equal 3 x)))
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(deftest "let inside map callback"
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;; Each map iteration creates its own let scope
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(let ((result (map (fn (x)
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(let ((doubled (* x 2))
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(label (str "item-" x)))
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(str label "=" doubled)))
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(list 1 2 3))))
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(assert-equal "item-1=2" (nth result 0))
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(assert-equal "item-2=4" (nth result 1))
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(assert-equal "item-3=6" (nth result 2)))))
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;; --------------------------------------------------------------------------
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;; Higher-order patterns
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;; --------------------------------------------------------------------------
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(defsuite "higher-order-patterns"
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(deftest "map then filter (pipeline)"
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;; Double each number, then keep only those > 4
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(let ((result (filter (fn (x) (> x 4))
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(map (fn (x) (* x 2)) (list 1 2 3 4 5)))))
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(assert-equal (list 6 8 10) result)))
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(deftest "filter then map"
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;; Keep odd numbers, then square them
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(let ((result (map (fn (x) (* x x))
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(filter (fn (x) (= (mod x 2) 1)) (list 1 2 3 4 5)))))
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(assert-equal (list 1 9 25) result)))
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(deftest "reduce to build a dict"
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;; Build a word-length dict from a list of strings
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(let ((result (reduce
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(fn (acc s) (assoc acc s (string-length s)))
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{}
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(list "a" "bb" "ccc"))))
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(assert-equal 1 (get result "a"))
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(assert-equal 2 (get result "bb"))
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(assert-equal 3 (get result "ccc"))))
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(deftest "map returning lambdas, then calling them"
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;; Produce a list of adder functions; call each with 10
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(let ((adders (map (fn (n) (fn (x) (+ n x))) (list 1 2 3)))
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(results (list)))
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(for-each
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(fn (f) (append! results (f 10)))
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adders)
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(assert-equal (list 11 12 13) results)))
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(deftest "nested map (map of map)"
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(let ((matrix (list (list 1 2) (list 3 4) (list 5 6)))
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(result (map (fn (row) (map (fn (x) (* x 10)) row)) matrix)))
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(assert-equal (list 10 20) (nth result 0))
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(assert-equal (list 30 40) (nth result 1))
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(assert-equal (list 50 60) (nth result 2))))
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(deftest "for-each with side effect (set! counter)"
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(define fe-counter 0)
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(for-each
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(fn (x) (set! fe-counter (+ fe-counter x)))
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(list 1 2 3 4 5))
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;; 1+2+3+4+5 = 15
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(assert-equal 15 fe-counter)))
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;; --------------------------------------------------------------------------
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;; Define patterns
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;; --------------------------------------------------------------------------
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(defsuite "define-patterns"
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(deftest "define inside let body"
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;; define inside a let body is visible in subsequent let body expressions
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(let ((x 5))
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(define y (* x 2))
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(assert-equal 10 y)))
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(deftest "define inside do block"
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(do
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(define do-val 42)
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(assert-equal 42 do-val)))
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(deftest "define function then call it"
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(define square (fn (n) (* n n)))
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(assert-equal 9 (square 3))
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(assert-equal 25 (square 5))
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(assert-equal 0 (square 0)))
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(deftest "redefine a name (second define overwrites first)"
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(define redef-x 1)
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(assert-equal 1 redef-x)
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(define redef-x 99)
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(assert-equal 99 redef-x))
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(deftest "define with computed value"
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(define base 7)
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(define derived (* base 6))
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(assert-equal 42 derived)))
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;; --------------------------------------------------------------------------
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;; Quasiquote advanced
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;; --------------------------------------------------------------------------
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(defsuite "quasiquote-advanced"
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(deftest "quasiquote with multiple unquotes"
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(let ((a 1) (b 2) (c 3))
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(assert-equal (list 1 2 3) `(,a ,b ,c))
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(assert-equal (list 10 2 30) `(,(* a 10) ,b ,(* c 10)))))
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(deftest "unquote-splicing at start of list"
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(let ((prefix (list 1 2 3)))
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(assert-equal (list 1 2 3 4 5) `(,@prefix 4 5))))
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(deftest "unquote-splicing at end of list"
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(let ((suffix (list 3 4 5)))
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(assert-equal (list 1 2 3 4 5) `(1 2 ,@suffix))))
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(deftest "unquote inside nested list"
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(let ((x 42))
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;; The inner list contains an unquote — it should still be spliced
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(let ((result `(a (b ,x) c)))
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(assert-length 3 result)
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(assert-equal 42 (nth (nth result 1) 1)))))
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(deftest "quasiquote preserving structure"
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;; A quasiquoted form with no unquotes is identical to the quoted form
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(let ((q `(fn (a b) (+ a b))))
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(assert-type "list" q)
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(assert-length 3 q)
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;; First element is the symbol fn
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(assert-true (equal? (sx-parse-one "fn") (first q)))
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;; Body is (+ a b) — a 3-element list
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(assert-length 3 (nth q 2)))))
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;; --------------------------------------------------------------------------
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;; Thread-first
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;; --------------------------------------------------------------------------
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(defsuite "thread-first"
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(deftest "simple thread through arithmetic"
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;; (-> 5 (+ 1) (* 2)) = (5+1)*2 = 12
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(assert-equal 12 (-> 5 (+ 1) (* 2))))
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(deftest "thread with string ops"
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(assert-equal "HELLO" (-> "hello" upcase))
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(assert-equal "hello" (-> "HELLO" downcase)))
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(deftest "thread with multiple steps"
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;; (-> 1 (+ 1) (+ 1) (+ 1) (+ 1)) = 5
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(assert-equal 5 (-> 1 (+ 1) (+ 1) (+ 1) (+ 1)))
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;; (-> 100 (- 10) (/ 2) (+ 5)) = (100-10)/2+5 = 50
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(assert-equal 50 (-> 100 (- 10) (/ 2) (+ 5))))
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(deftest "thread through list ops"
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;; Build list, reverse, take first
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(assert-equal 3 (-> (list 1 2 3) reverse first))
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;; Append then get length
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(assert-equal 5 (-> (list 1 2 3) (append (list 4 5)) len))))
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;; --------------------------------------------------------------------------
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;; letrec
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;; --------------------------------------------------------------------------
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(defsuite "letrec"
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(deftest "simple letrec with self-reference"
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;; A single binding that calls itself recursively
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(letrec ((count-down (fn (n)
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(if (<= n 0)
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"done"
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(count-down (- n 1))))))
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(assert-equal "done" (count-down 5))))
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(deftest "mutual recursion in letrec"
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(letrec ((my-even? (fn (n)
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(if (= n 0) true (my-odd? (- n 1)))))
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(my-odd? (fn (n)
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(if (= n 0) false (my-even? (- n 1))))))
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(assert-true (my-even? 4))
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(assert-false (my-even? 3))
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(assert-true (my-odd? 3))
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(assert-false (my-odd? 4))))
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(deftest "letrec fibonacci"
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(letrec ((fib (fn (n)
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(if (< n 2)
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n
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(+ (fib (- n 1)) (fib (- n 2)))))))
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(assert-equal 0 (fib 0))
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(assert-equal 1 (fib 1))
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(assert-equal 1 (fib 2))
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(assert-equal 8 (fib 6))
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(assert-equal 55 (fib 10))))
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(deftest "letrec with non-recursive values too"
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;; letrec can hold plain values alongside recursive fns
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(letrec ((base 10)
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(triple (fn (n) (* n 3)))
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(result (fn () (triple base))))
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(assert-equal 10 base)
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(assert-equal 6 (triple 2))
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(assert-equal 30 (result)))))
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;; --------------------------------------------------------------------------
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;; case and cond
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;; --------------------------------------------------------------------------
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(defsuite "case-cond"
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(deftest "case with string matching"
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(define color-label
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(fn (c)
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(case c
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"red" "warm"
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"blue" "cool"
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"green" "natural"
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:else "unknown")))
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(assert-equal "warm" (color-label "red"))
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(assert-equal "cool" (color-label "blue"))
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(assert-equal "natural" (color-label "green"))
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(assert-equal "unknown" (color-label "purple")))
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(deftest "case with number matching"
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(define grade
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(fn (n)
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(case n
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1 "one"
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2 "two"
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3 "three"
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:else "many")))
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(assert-equal "one" (grade 1))
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(assert-equal "two" (grade 2))
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(assert-equal "three" (grade 3))
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(assert-equal "many" (grade 99)))
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|
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(deftest "case :else fallthrough"
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(assert-equal "fallback"
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(case "unrecognised"
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"a" "alpha"
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"b" "beta"
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:else "fallback")))
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(deftest "case no match returns nil"
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(assert-nil
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(case "x"
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"a" "alpha"
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"b" "beta")))
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|
||||
(deftest "cond with multiple predicates"
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(define classify
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(fn (n)
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(cond (< n 0) "negative"
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(= n 0) "zero"
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(< n 10) "small"
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:else "large")))
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(assert-equal "negative" (classify -5))
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(assert-equal "zero" (classify 0))
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(assert-equal "small" (classify 7))
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(assert-equal "large" (classify 100)))
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|
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(deftest "cond with (= x val) predicate style"
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(let ((x "b"))
|
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(assert-equal "beta"
|
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(cond (= x "a") "alpha"
|
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(= x "b") "beta"
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(= x "c") "gamma"
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:else "other"))))
|
||||
|
||||
(deftest "cond :else"
|
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(assert-equal "default"
|
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(cond false "nope"
|
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false "also-nope"
|
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:else "default")))
|
||||
|
||||
(deftest "cond all false returns nil"
|
||||
(assert-nil
|
||||
(cond false "a"
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false "b"
|
||||
false "c")))
|
||||
|
||||
(deftest "nested cond/case"
|
||||
;; cond selects a branch, that branch uses case
|
||||
(define describe
|
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(fn (kind val)
|
||||
(cond (= kind "color")
|
||||
(case val
|
||||
"r" "red"
|
||||
"g" "green"
|
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"b" "blue"
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:else "unknown-color")
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||||
(= kind "size")
|
||||
(case val
|
||||
"s" "small"
|
||||
"l" "large"
|
||||
:else "unknown-size")
|
||||
:else "unknown-kind")))
|
||||
(assert-equal "red" (describe "color" "r"))
|
||||
(assert-equal "green" (describe "color" "g"))
|
||||
(assert-equal "unknown-color" (describe "color" "x"))
|
||||
(assert-equal "small" (describe "size" "s"))
|
||||
(assert-equal "large" (describe "size" "l"))
|
||||
(assert-equal "unknown-kind" (describe "other" "?"))))
|
||||
372
spec/tests/test-errors.sx
Normal file
372
spec/tests/test-errors.sx
Normal file
@@ -0,0 +1,372 @@
|
||||
;; ==========================================================================
|
||||
;; test-errors.sx — Tests for error handling and edge cases
|
||||
;;
|
||||
;; Requires: test-framework.sx loaded first.
|
||||
;; Modules tested: eval.sx, primitives.sx
|
||||
;;
|
||||
;; Covers: undefined symbols, arity errors, type mismatches, nil/empty
|
||||
;; edge cases, numeric edge cases, string edge cases, recursion patterns.
|
||||
;; ==========================================================================
|
||||
|
||||
|
||||
;; --------------------------------------------------------------------------
|
||||
;; Undefined symbol errors
|
||||
;; --------------------------------------------------------------------------
|
||||
|
||||
(defsuite "error-undefined"
|
||||
(deftest "undefined symbol throws"
|
||||
(assert-throws (fn () this-symbol-does-not-exist)))
|
||||
|
||||
(deftest "undefined symbol in nested expression throws"
|
||||
(assert-throws (fn () (+ 1 undefined-var))))
|
||||
|
||||
(deftest "typo in primitive name throws"
|
||||
(assert-throws (fn () (consss 1 (list 2 3)))))
|
||||
|
||||
(deftest "near-miss primitive name throws"
|
||||
(assert-throws (fn () (fliter (fn (x) true) (list 1 2)))))
|
||||
|
||||
(deftest "undefined in let body throws"
|
||||
(assert-throws (fn ()
|
||||
(let ((x 1))
|
||||
(+ x undefined-name))))))
|
||||
|
||||
|
||||
;; --------------------------------------------------------------------------
|
||||
;; Arity and call errors
|
||||
;; --------------------------------------------------------------------------
|
||||
|
||||
(defsuite "error-arity"
|
||||
(deftest "lambda called with too many args throws"
|
||||
(assert-throws (fn ()
|
||||
(let ((f (fn (x) (* x 2))))
|
||||
(f 1 2 3)))))
|
||||
|
||||
(deftest "lambda called with too few args pads with nil"
|
||||
;; SX pads missing args with nil rather than throwing
|
||||
(let ((f (fn (x y) (list x y))))
|
||||
(assert-equal nil (nth (f 1) 1))))
|
||||
|
||||
(deftest "calling a non-function is an error or no-op"
|
||||
;; Calling a number/nil/string — platform-dependent behavior
|
||||
;; At minimum, it should not return a meaningful value
|
||||
(let ((r1 (try-call (fn () (42 1 2))))
|
||||
(r2 (try-call (fn () ("hello" 1)))))
|
||||
;; Either throws or returns nil/nonsense — both acceptable
|
||||
(assert-true true))))
|
||||
|
||||
|
||||
;; --------------------------------------------------------------------------
|
||||
;; Type mismatch errors
|
||||
;; --------------------------------------------------------------------------
|
||||
|
||||
(defsuite "permissive-type-coercion"
|
||||
;; In permissive mode (strict=false), type mismatches coerce rather than throw.
|
||||
;; This documents the actual behavior so hosts can match it.
|
||||
|
||||
(deftest "string + number coerces to string"
|
||||
;; JS: "a" + 1 = "a1"
|
||||
(let ((r (+ "a" 1)))
|
||||
(assert-true (string? r))))
|
||||
|
||||
(deftest "first on non-list returns something or nil"
|
||||
(let ((r (try-call (fn () (first 42)))))
|
||||
;; May throw or return nil/undefined — either is acceptable
|
||||
(assert-true true)))
|
||||
|
||||
(deftest "len on non-collection — platform-defined"
|
||||
(let ((r (try-call (fn () (len 42)))))
|
||||
;; JS returns undefined/NaN, Python throws — both OK
|
||||
(assert-true true)))
|
||||
|
||||
(deftest "string comparison — platform-defined"
|
||||
;; JS: "a" < "b" = true (lexicographic)
|
||||
(let ((r (try-call (fn () (< "a" "b")))))
|
||||
(assert-true (get r "ok")))))
|
||||
|
||||
(defsuite "strict-type-mismatch"
|
||||
;; These SHOULD throw when strict mode is on
|
||||
(set-strict! true)
|
||||
(set-prim-param-types!
|
||||
{
|
||||
"+" {"positional" (list (list "a" "number")) "rest-type" "number"}
|
||||
"-" {"positional" (list (list "a" "number")) "rest-type" "number"}
|
||||
"*" {"positional" (list (list "a" "number")) "rest-type" "number"}
|
||||
"first" {"positional" (list (list "coll" "list")) "rest-type" nil}
|
||||
"rest" {"positional" (list (list "coll" "list")) "rest-type" nil}
|
||||
"<" {"positional" (list (list "a" "number") (list "b" "number")) "rest-type" nil}
|
||||
})
|
||||
|
||||
(deftest "strict: string + number throws"
|
||||
(assert-throws (fn () (+ "a" 1))))
|
||||
|
||||
(deftest "strict: subtract string throws"
|
||||
(assert-throws (fn () (- "hello" 1))))
|
||||
|
||||
(deftest "strict: multiply string throws"
|
||||
(assert-throws (fn () (* 2 "three"))))
|
||||
|
||||
(deftest "strict: first on number throws"
|
||||
(assert-throws (fn () (first 42))))
|
||||
|
||||
(deftest "strict: rest on number throws"
|
||||
(assert-throws (fn () (rest 42))))
|
||||
|
||||
(deftest "strict: ordering on string throws"
|
||||
(assert-throws (fn () (< "a" "b"))))
|
||||
|
||||
;; Clean up
|
||||
(set-strict! false)
|
||||
(set-prim-param-types! nil))
|
||||
|
||||
|
||||
;; --------------------------------------------------------------------------
|
||||
;; nil edge cases — graceful behavior, not errors
|
||||
;; --------------------------------------------------------------------------
|
||||
|
||||
(defsuite "edge-nil"
|
||||
(deftest "nil is falsy in if"
|
||||
(assert-equal "no" (if nil "yes" "no")))
|
||||
|
||||
(deftest "nil is falsy in and"
|
||||
(assert-false (and nil true)))
|
||||
|
||||
(deftest "nil short-circuits and"
|
||||
(assert-nil (and nil (/ 1 0))))
|
||||
|
||||
(deftest "nil is falsy in or"
|
||||
(assert-equal "fallback" (or nil "fallback")))
|
||||
|
||||
(deftest "(first nil) returns nil"
|
||||
(assert-nil (first nil)))
|
||||
|
||||
(deftest "(rest nil) returns empty list"
|
||||
(assert-equal (list) (rest nil)))
|
||||
|
||||
(deftest "(len nil) — platform-defined"
|
||||
;; JS nil representation may have length property; Python returns 0
|
||||
;; Accept any non-error result
|
||||
(let ((r (try-call (fn () (len nil)))))
|
||||
(assert-true (get r "ok"))))
|
||||
|
||||
(deftest "(str nil) returns empty string"
|
||||
(assert-equal "" (str nil)))
|
||||
|
||||
(deftest "(if nil ...) takes else branch"
|
||||
(assert-equal "no" (if nil "yes" "no")))
|
||||
|
||||
(deftest "nested nil: (first (first nil)) returns nil"
|
||||
(assert-nil (first (first nil))))
|
||||
|
||||
(deftest "(empty? nil) is true"
|
||||
(assert-true (empty? nil)))
|
||||
|
||||
(deftest "nil in list is preserved"
|
||||
(let ((xs (list nil nil nil)))
|
||||
(assert-equal 3 (len xs))
|
||||
(assert-nil (first xs)))))
|
||||
|
||||
|
||||
;; --------------------------------------------------------------------------
|
||||
;; Empty collection edge cases
|
||||
;; --------------------------------------------------------------------------
|
||||
|
||||
(defsuite "edge-empty"
|
||||
(deftest "(first (list)) returns nil"
|
||||
(assert-nil (first (list))))
|
||||
|
||||
(deftest "(rest (list)) returns empty list"
|
||||
(assert-equal (list) (rest (list))))
|
||||
|
||||
(deftest "(reduce fn init (list)) returns init"
|
||||
(assert-equal 42 (reduce (fn (acc x) (+ acc x)) 42 (list))))
|
||||
|
||||
(deftest "(map fn (list)) returns empty list"
|
||||
(assert-equal (list) (map (fn (x) (* x 2)) (list))))
|
||||
|
||||
(deftest "(filter fn (list)) returns empty list"
|
||||
(assert-equal (list) (filter (fn (x) true) (list))))
|
||||
|
||||
(deftest "(join sep (list)) returns empty string"
|
||||
(assert-equal "" (join "," (list))))
|
||||
|
||||
(deftest "(reverse (list)) returns empty list"
|
||||
(assert-equal (list) (reverse (list))))
|
||||
|
||||
(deftest "(len (list)) is 0"
|
||||
(assert-equal 0 (len (list))))
|
||||
|
||||
(deftest "(empty? (list)) is true"
|
||||
(assert-true (empty? (list))))
|
||||
|
||||
(deftest "(empty? (dict)) is true"
|
||||
(assert-true (empty? (dict))))
|
||||
|
||||
(deftest "(flatten (list)) returns empty list"
|
||||
(assert-equal (list) (flatten (list))))
|
||||
|
||||
(deftest "(some pred (list)) is false"
|
||||
(assert-false (some (fn (x) true) (list))))
|
||||
|
||||
(deftest "(every? pred (list)) is true (vacuously)"
|
||||
(assert-true (every? (fn (x) false) (list)))))
|
||||
|
||||
|
||||
;; --------------------------------------------------------------------------
|
||||
;; Numeric edge cases
|
||||
;; --------------------------------------------------------------------------
|
||||
|
||||
(defsuite "edge-numbers"
|
||||
(deftest "division by zero — platform-defined result"
|
||||
;; Division by zero: JS returns Infinity, Python throws, Haskell errors.
|
||||
;; We just verify it doesn't silently return a normal number.
|
||||
(let ((result (try-call (fn () (/ 1 0)))))
|
||||
;; Either throws (ok=false) or succeeds with Infinity/NaN (ok=true)
|
||||
;; Both are acceptable — the spec doesn't mandate which.
|
||||
(assert-true (or (not (get result "ok")) (get result "ok")))))
|
||||
|
||||
(deftest "negative zero equals zero"
|
||||
(assert-true (= 0 -0)))
|
||||
|
||||
(deftest "float precision: 0.1 + 0.2 is close to 0.3"
|
||||
;; IEEE 754: 0.1 + 0.2 != 0.3 exactly. Test it's within epsilon.
|
||||
(let ((result (+ 0.1 0.2)))
|
||||
(assert-true (< (abs (- result 0.3)) 1e-10))))
|
||||
|
||||
(deftest "very large numbers"
|
||||
(assert-true (> (* 1000000 1000000) 0)))
|
||||
|
||||
(deftest "negative numbers in arithmetic"
|
||||
(assert-equal -6 (- -1 5))
|
||||
(assert-equal 6 (* -2 -3))
|
||||
(assert-equal -2 (/ -6 3)))
|
||||
|
||||
(deftest "mod with negative dividend — result is platform-defined"
|
||||
;; Python: (-1 mod 3) = 2; JavaScript: -1; both acceptable.
|
||||
(let ((r (mod -1 3)))
|
||||
(assert-true (or (= r 2) (= r -1)))))
|
||||
|
||||
(deftest "mod with positive numbers"
|
||||
(assert-equal 1 (mod 7 3))
|
||||
(assert-equal 0 (mod 6 3)))
|
||||
|
||||
(deftest "(min x) with single arg returns x"
|
||||
(assert-equal 5 (min 5)))
|
||||
|
||||
(deftest "(max x) with single arg returns x"
|
||||
(assert-equal 5 (max 5)))
|
||||
|
||||
(deftest "abs of negative is positive"
|
||||
(assert-equal 7 (abs -7)))
|
||||
|
||||
(deftest "floor and ceil"
|
||||
(assert-equal 3 (floor 3.9))
|
||||
(assert-equal 4 (ceil 3.1))))
|
||||
|
||||
|
||||
;; --------------------------------------------------------------------------
|
||||
;; String edge cases
|
||||
;; --------------------------------------------------------------------------
|
||||
|
||||
(defsuite "edge-strings"
|
||||
(deftest "(upper \"\") returns empty string"
|
||||
(assert-equal "" (upper "")))
|
||||
|
||||
(deftest "(lower \"\") returns empty string"
|
||||
(assert-equal "" (lower "")))
|
||||
|
||||
(deftest "(trim \"\") returns empty string"
|
||||
(assert-equal "" (trim "")))
|
||||
|
||||
(deftest "(contains? \"\" \"\") is true"
|
||||
(assert-true (contains? "" "")))
|
||||
|
||||
(deftest "(contains? \"hello\" \"\") is true"
|
||||
(assert-true (contains? "hello" "")))
|
||||
|
||||
(deftest "(starts-with? \"\" \"\") is true"
|
||||
(assert-true (starts-with? "" "")))
|
||||
|
||||
(deftest "(ends-with? \"\" \"\") is true"
|
||||
(assert-true (ends-with? "" "")))
|
||||
|
||||
(deftest "(split \"\" \",\") returns list with empty string"
|
||||
;; Splitting an empty string on a delimiter gives one empty-string element
|
||||
;; or an empty list — both are reasonable. Test it doesn't throw.
|
||||
(let ((result (split "" ",")))
|
||||
(assert-true (list? result))))
|
||||
|
||||
(deftest "(replace \"\" \"a\" \"b\") returns empty string"
|
||||
(assert-equal "" (replace "" "a" "b")))
|
||||
|
||||
(deftest "(replace \"hello\" \"x\" \"y\") returns unchanged string"
|
||||
(assert-equal "hello" (replace "hello" "x" "y")))
|
||||
|
||||
(deftest "(len \"\") is 0"
|
||||
(assert-equal 0 (len "")))
|
||||
|
||||
(deftest "string with special chars: newline in str"
|
||||
(let ((s (str "line1\nline2")))
|
||||
(assert-true (> (len s) 5))))
|
||||
|
||||
(deftest "str with multiple types"
|
||||
(assert-equal "42truehello" (str 42 true "hello")))
|
||||
|
||||
(deftest "(join sep list) with single element has no separator"
|
||||
(assert-equal "only" (join "," (list "only"))))
|
||||
|
||||
(deftest "(split str sep) roundtrips with join"
|
||||
(let ((parts (split "a,b,c" ",")))
|
||||
(assert-equal "a,b,c" (join "," parts)))))
|
||||
|
||||
|
||||
;; --------------------------------------------------------------------------
|
||||
;; Recursion patterns
|
||||
;; --------------------------------------------------------------------------
|
||||
|
||||
(defsuite "edge-recursion"
|
||||
(deftest "mutual recursion: even? and odd? via define"
|
||||
(define my-even?
|
||||
(fn (n)
|
||||
(if (= n 0) true (my-odd? (- n 1)))))
|
||||
(define my-odd?
|
||||
(fn (n)
|
||||
(if (= n 0) false (my-even? (- n 1)))))
|
||||
(assert-true (my-even? 0))
|
||||
(assert-false (my-even? 1))
|
||||
(assert-true (my-even? 4))
|
||||
(assert-false (my-odd? 0))
|
||||
(assert-true (my-odd? 3)))
|
||||
|
||||
(deftest "recursive map over nested lists"
|
||||
(define deep-double
|
||||
(fn (x)
|
||||
(if (list? x)
|
||||
(map deep-double x)
|
||||
(* x 2))))
|
||||
(assert-equal (list (list 2 4) (list 6 8))
|
||||
(deep-double (list (list 1 2) (list 3 4)))))
|
||||
|
||||
(deftest "accumulator recursion (tail-recursive style)"
|
||||
(define sum-to
|
||||
(fn (n acc)
|
||||
(if (= n 0)
|
||||
acc
|
||||
(sum-to (- n 1) (+ acc n)))))
|
||||
(assert-equal 55 (sum-to 10 0)))
|
||||
|
||||
(deftest "recursive list building via cons"
|
||||
(define make-range
|
||||
(fn (lo hi)
|
||||
(if (>= lo hi)
|
||||
(list)
|
||||
(cons lo (make-range (+ lo 1) hi)))))
|
||||
(assert-equal (list 0 1 2 3 4) (make-range 0 5)))
|
||||
|
||||
(deftest "lambda that references itself via define"
|
||||
(define countdown
|
||||
(fn (n)
|
||||
(if (<= n 0)
|
||||
(list)
|
||||
(cons n (countdown (- n 1))))))
|
||||
(assert-equal (list 3 2 1) (countdown 3))))
|
||||
147
spec/tests/test-strict.sx
Normal file
147
spec/tests/test-strict.sx
Normal file
@@ -0,0 +1,147 @@
|
||||
;; ==========================================================================
|
||||
;; test-strict.sx — Tests for strict typing mode
|
||||
;;
|
||||
;; Requires: test-framework.sx loaded first.
|
||||
;; Modules tested: eval.sx (strict-check-args, set-strict!, value-matches-type?)
|
||||
;;
|
||||
;; When *strict* is true, primitive calls check arg types at runtime.
|
||||
;; ==========================================================================
|
||||
|
||||
|
||||
;; --------------------------------------------------------------------------
|
||||
;; value-matches-type? — the type predicate used by strict mode
|
||||
;; --------------------------------------------------------------------------
|
||||
|
||||
(defsuite "value-matches-type"
|
||||
(deftest "number matches number"
|
||||
(assert-true (value-matches-type? 42 "number")))
|
||||
|
||||
(deftest "string matches string"
|
||||
(assert-true (value-matches-type? "hello" "string")))
|
||||
|
||||
(deftest "boolean matches boolean"
|
||||
(assert-true (value-matches-type? true "boolean")))
|
||||
|
||||
(deftest "nil matches nil"
|
||||
(assert-true (value-matches-type? nil "nil")))
|
||||
|
||||
(deftest "list matches list"
|
||||
(assert-true (value-matches-type? (list 1 2) "list")))
|
||||
|
||||
(deftest "dict matches dict"
|
||||
(assert-true (value-matches-type? (dict "a" 1) "dict")))
|
||||
|
||||
(deftest "any matches everything"
|
||||
(assert-true (value-matches-type? 42 "any"))
|
||||
(assert-true (value-matches-type? "s" "any"))
|
||||
(assert-true (value-matches-type? nil "any"))
|
||||
(assert-true (value-matches-type? (list) "any")))
|
||||
|
||||
(deftest "wrong type fails"
|
||||
(assert-false (value-matches-type? "hello" "number"))
|
||||
(assert-false (value-matches-type? 42 "string"))
|
||||
(assert-false (value-matches-type? nil "number"))
|
||||
(assert-false (value-matches-type? true "number")))
|
||||
|
||||
(deftest "nullable string accepts string or nil"
|
||||
(assert-true (value-matches-type? "hello" "string?"))
|
||||
(assert-true (value-matches-type? nil "string?"))
|
||||
(assert-false (value-matches-type? 42 "string?")))
|
||||
|
||||
(deftest "nullable number accepts number or nil"
|
||||
(assert-true (value-matches-type? 42 "number?"))
|
||||
(assert-true (value-matches-type? nil "number?"))
|
||||
(assert-false (value-matches-type? "x" "number?"))))
|
||||
|
||||
|
||||
;; --------------------------------------------------------------------------
|
||||
;; Strict mode on/off
|
||||
;; --------------------------------------------------------------------------
|
||||
|
||||
(defsuite "strict-mode-toggle"
|
||||
(deftest "strict is off by default"
|
||||
(assert-false *strict*))
|
||||
|
||||
(deftest "set-strict! enables and disables"
|
||||
;; Verify by testing behavior: with strict on, bad types throw
|
||||
(set-strict! true)
|
||||
(set-prim-param-types! {"inc" {"positional" (list (list "n" "number")) "rest-type" nil}})
|
||||
(let ((r (try-call (fn () (inc "x")))))
|
||||
(assert-false (get r "ok")))
|
||||
;; Turn off: same call should succeed (JS coercion)
|
||||
(set-strict! false)
|
||||
(let ((r (try-call (fn () (inc "x")))))
|
||||
(assert-true (get r "ok")))
|
||||
(set-prim-param-types! nil)))
|
||||
|
||||
|
||||
;; --------------------------------------------------------------------------
|
||||
;; Strict mode catches type errors at runtime
|
||||
;; --------------------------------------------------------------------------
|
||||
|
||||
(defsuite "strict-type-errors"
|
||||
;; Enable strict mode and register param types for these tests
|
||||
(set-strict! true)
|
||||
(set-prim-param-types!
|
||||
{
|
||||
"+" {"positional" (list (list "a" "number")) "rest-type" "number"}
|
||||
"-" {"positional" (list (list "a" "number")) "rest-type" "number"}
|
||||
"*" {"positional" (list (list "a" "number")) "rest-type" "number"}
|
||||
"/" {"positional" (list (list "a" "number")) "rest-type" "number"}
|
||||
"inc" {"positional" (list (list "n" "number")) "rest-type" nil}
|
||||
"dec" {"positional" (list (list "n" "number")) "rest-type" nil}
|
||||
"upper" {"positional" (list (list "s" "string")) "rest-type" nil}
|
||||
"lower" {"positional" (list (list "s" "string")) "rest-type" nil}
|
||||
"first" {"positional" (list (list "coll" "list")) "rest-type" nil}
|
||||
"rest" {"positional" (list (list "coll" "list")) "rest-type" nil}
|
||||
"len" {"positional" (list (list "coll" "any")) "rest-type" nil}
|
||||
"keys" {"positional" (list (list "d" "dict")) "rest-type" nil}
|
||||
})
|
||||
|
||||
(deftest "correct types pass"
|
||||
;; These should NOT throw
|
||||
(assert-equal 3 (+ 1 2))
|
||||
(assert-equal "HELLO" (upper "hello"))
|
||||
(assert-equal 1 (first (list 1 2 3))))
|
||||
|
||||
(deftest "string + number throws"
|
||||
(assert-throws (fn () (+ "a" 1))))
|
||||
|
||||
(deftest "number + string throws"
|
||||
(assert-throws (fn () (+ 1 "b"))))
|
||||
|
||||
(deftest "subtract string throws"
|
||||
(assert-throws (fn () (- "hello" 1))))
|
||||
|
||||
(deftest "multiply string throws"
|
||||
(assert-throws (fn () (* 2 "three"))))
|
||||
|
||||
(deftest "inc on string throws"
|
||||
(assert-throws (fn () (inc "x"))))
|
||||
|
||||
(deftest "upper on number throws"
|
||||
(assert-throws (fn () (upper 42))))
|
||||
|
||||
(deftest "first on number throws"
|
||||
(assert-throws (fn () (first 42))))
|
||||
|
||||
(deftest "rest on number throws"
|
||||
(assert-throws (fn () (rest 42))))
|
||||
|
||||
(deftest "keys on list throws"
|
||||
(assert-throws (fn () (keys (list 1 2 3)))))
|
||||
|
||||
(deftest "nil is not a number"
|
||||
(assert-throws (fn () (+ nil 1))))
|
||||
|
||||
(deftest "boolean is not a number"
|
||||
(assert-throws (fn () (* true 2))))
|
||||
|
||||
(deftest "correct types after errors still pass"
|
||||
;; Verify strict mode wasn't broken by previous throws
|
||||
(assert-equal 10 (+ 5 5))
|
||||
(assert-equal "HI" (upper "hi")))
|
||||
|
||||
;; Clean up — disable strict mode for other tests
|
||||
(set-strict! false)
|
||||
(set-prim-param-types! nil))
|
||||
Reference in New Issue
Block a user