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893c767238
test-cek-reactive.sx: 9 tests across 4 suites — deref pass-through, signal without reactive-reset, reactive-reset shift with continuation capture, scope disposal cleanup. run_cek_reactive_tests.py: new runner loading signals+frames+cek. Both test runners override sx_ref.eval_expr back to tree-walk so interpreted .sx uses tree-walk internally. Plan page added to sx-docs. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
155 lines
5.9 KiB
Plaintext
155 lines
5.9 KiB
Plaintext
;; ==========================================================================
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;; test-cek-reactive.sx — Tests for deref-as-shift reactive rendering
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;;
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;; Tests that (deref signal) inside a reactive-reset boundary performs
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;; continuation capture: the rest of the expression becomes the subscriber.
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;;
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;; Requires: test-framework.sx, frames.sx, cek.sx, signals.sx loaded first.
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;; ==========================================================================
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;; --------------------------------------------------------------------------
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;; Basic deref behavior through CEK
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;; --------------------------------------------------------------------------
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(defsuite "deref pass-through"
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(deftest "deref non-signal passes through"
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(let ((result (eval-expr-cek
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(sx-parse-one "(deref 42)")
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(test-env))))
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(assert-equal 42 result)))
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(deftest "deref nil passes through"
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(let ((result (eval-expr-cek
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(sx-parse-one "(deref nil)")
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(test-env))))
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(assert-nil result)))
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(deftest "deref string passes through"
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(let ((result (eval-expr-cek
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(sx-parse-one "(deref \"hello\")")
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(test-env))))
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(assert-equal "hello" result))))
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;; --------------------------------------------------------------------------
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;; Deref signal without reactive-reset (no shift)
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;; --------------------------------------------------------------------------
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(defsuite "deref signal without reactive-reset"
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(deftest "deref signal returns current value"
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(let ((s (signal 99)))
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(env-set! (test-env) "test-sig" s)
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(let ((result (eval-expr-cek
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(sx-parse-one "(deref test-sig)")
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(test-env))))
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(assert-equal 99 result))))
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(deftest "deref signal in expression returns computed value"
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(let ((s (signal 10)))
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(env-set! (test-env) "test-sig" s)
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(let ((result (eval-expr-cek
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(sx-parse-one "(+ 5 (deref test-sig))")
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(test-env))))
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(assert-equal 15 result)))))
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;; --------------------------------------------------------------------------
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;; Reactive reset + deref: continuation capture
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;; --------------------------------------------------------------------------
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(defsuite "reactive-reset shift"
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(deftest "deref signal with reactive-reset captures continuation"
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(let ((s (signal 42))
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(captured-val nil))
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;; Run CEK with a ReactiveResetFrame
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(let ((result (cek-run
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(make-cek-state
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(sx-parse-one "(deref test-sig)")
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(let ((e (env-extend (test-env))))
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(env-set! e "test-sig" s)
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e)
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(list (make-reactive-reset-frame
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(test-env)
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(fn (v) (set! captured-val v))
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true))))))
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;; Initial render: returns current value, update-fn NOT called (first-render)
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(assert-equal 42 result)
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(assert-nil captured-val))))
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(deftest "signal change invokes subscriber with update-fn"
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(let ((s (signal 10))
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(update-calls (list)))
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;; Set up reactive-reset with tracking update-fn
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(scope-push! "sx-island-scope" nil)
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(let ((e (env-extend (test-env))))
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(env-set! e "test-sig" s)
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(cek-run
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(make-cek-state
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(sx-parse-one "(deref test-sig)")
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e
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(list (make-reactive-reset-frame
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e
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(fn (v) (append! update-calls v))
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true)))))
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;; Change signal — subscriber should fire
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(reset! s 20)
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(assert-equal 1 (len update-calls))
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(assert-equal 20 (first update-calls))
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;; Change again
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(reset! s 30)
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(assert-equal 2 (len update-calls))
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(assert-equal 30 (nth update-calls 1))
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(scope-pop! "sx-island-scope")))
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(deftest "expression with deref captures rest as continuation"
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(let ((s (signal 5))
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(update-calls (list)))
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(scope-push! "sx-island-scope" nil)
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(let ((e (env-extend (test-env))))
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(env-set! e "test-sig" s)
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;; (str "val=" (deref test-sig)) — continuation captures (str "val=" [HOLE])
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(let ((result (cek-run
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(make-cek-state
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(sx-parse-one "(str \"val=\" (deref test-sig))")
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e
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(list (make-reactive-reset-frame
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e
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(fn (v) (append! update-calls v))
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true))))))
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(assert-equal "val=5" result)))
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;; Change signal — should get updated string
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(reset! s 42)
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(assert-equal 1 (len update-calls))
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(assert-equal "val=42" (first update-calls))
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(scope-pop! "sx-island-scope"))))
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;; --------------------------------------------------------------------------
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;; Disposal and cleanup
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;; --------------------------------------------------------------------------
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(defsuite "disposal"
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(deftest "scope cleanup unsubscribes continuation"
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(let ((s (signal 1))
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(update-calls (list))
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(disposers (list)))
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;; Create island scope with collector that accumulates disposers
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(scope-push! "sx-island-scope" (fn (d) (append! disposers d)))
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(let ((e (env-extend (test-env))))
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(env-set! e "test-sig" s)
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(cek-run
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(make-cek-state
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(sx-parse-one "(deref test-sig)")
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e
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(list (make-reactive-reset-frame
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e
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(fn (v) (append! update-calls v))
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true)))))
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;; Pop scope — call all disposers
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(scope-pop! "sx-island-scope")
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(for-each (fn (d) (invoke d)) disposers)
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;; Change signal — no update should fire
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(reset! s 999)
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(assert-equal 0 (len update-calls)))))
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