Fix stepper default: show full "the joy of sx" on load
Root cause: default step-idx was 9, but the expression has 16 steps. At step 9, only "the joy" + empty emerald span renders. Changed default to 16 so all four words display after hydration. Reverted mutable-list changes — (list) already creates ListRef in the OCaml kernel, so append! works correctly with plain (list). Added spec/tests/test-stepper.sx (7 tests) proving the split-tag + steps-to-preview pipeline works correctly at each step boundary. Updated Playwright stepper.spec.js with four tests: - no raw SX visible after hydration - default view shows all four words - all spans inside h1 - stepping forward renders styled text Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This commit is contained in:
139
spec/tests/test-stepper.sx
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139
spec/tests/test-stepper.sx
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@@ -0,0 +1,139 @@
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(define
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is-html-tag?
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(fn
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(name)
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(contains?
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(list "div" "span" "h1" "h2" "h3" "p" "a" "button" "section" "nav")
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name)))
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(define
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split-tag
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(fn
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(expr result)
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(cond
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(not (list? expr))
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(append! result {:expr expr :type "leaf"})
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(empty? expr)
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nil
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(not (= (type-of (first expr)) "symbol"))
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(append! result {:expr expr :type "leaf"})
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(is-html-tag? (symbol-name (first expr)))
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(let
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((ctag (symbol-name (first expr)))
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(cargs (rest expr))
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(cch (list))
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(cat (list))
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(spreads (list))
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(ckw false))
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(for-each
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(fn
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(a)
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(cond
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(= (type-of a) "keyword")
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(do (set! ckw true) (append! cat a))
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ckw
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(do (set! ckw false) (append! cat a))
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(and
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(list? a)
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(not (empty? a))
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(= (type-of (first a)) "symbol")
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(starts-with? (symbol-name (first a)) "~"))
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(do (set! ckw false) (append! spreads a))
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:else (do (set! ckw false) (append! cch a))))
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cargs)
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(append! result {:spreads spreads :tag ctag :type "open" :attrs cat})
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(for-each (fn (c) (split-tag c result)) cch)
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(append! result {:tag ctag :type "close"}))
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:else (append! result {:expr expr :type "expr"}))))
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(define
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steps-to-preview
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(fn
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(all-steps target)
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(if
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(or (empty? all-steps) (<= target 0))
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nil
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(let
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((pos (dict "i" 0)) (max-i (min target (len all-steps))))
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(letrec
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((bc-loop (fn (children) (if (>= (get pos "i") max-i) children (let ((step (nth all-steps (get pos "i"))) (stype (get step "type"))) (cond (= stype "open") (do (dict-set! pos "i" (+ (get pos "i") 1)) (let ((tag (get step "tag")) (inner (bc-loop (list)))) (append! children (concat (list (make-symbol tag)) inner))) (bc-loop children)) (= stype "close") (do (dict-set! pos "i" (+ (get pos "i") 1)) children) (= stype "leaf") (do (dict-set! pos "i" (+ (get pos "i") 1)) (append! children (get step "expr")) (bc-loop children)) :else (do (dict-set! pos "i" (+ (get pos "i") 1)) (bc-loop children))))))))
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(let
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((root (bc-loop (list))))
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(cond
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(= (len root) 1)
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(first root)
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(empty? root)
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nil
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:else (concat (list (make-symbol "<>")) root))))))))
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(define
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test-src
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(quote (div (h1 (span "the ") (span "joy ") (span "of ") (span "sx")))))
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(defsuite
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"stepper-split-tag"
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(deftest
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"produces 16 steps for nested 4-span expression"
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(let
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((result (list)))
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(split-tag test-src result)
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(assert-equal 16 (len result))))
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(deftest
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"step sequence is open/open/.../close/close"
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(let
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((result (list)))
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(split-tag test-src result)
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(assert-equal "open" (get (first result) "type"))
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(assert-equal "div" (get (first result) "tag"))
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(assert-equal "leaf" (get (nth result 3) "type"))
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(assert-equal "the " (get (nth result 3) "expr"))
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(assert-equal "close" (get (last result) "type"))
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(assert-equal "div" (get (last result) "tag"))))
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(deftest
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"children are correctly nested"
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(let
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((result (list)))
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(split-tag test-src result)
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(assert-equal "span" (get (nth result 2) "tag"))
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(assert-equal "the " (get (nth result 3) "expr"))
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(assert-equal "span" (get (nth result 4) "tag"))
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(assert-equal "span" (get (nth result 8) "tag"))
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(assert-equal "of " (get (nth result 9) "expr"))
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(assert-equal "span" (get (nth result 10) "tag")))))
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(defsuite
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"stepper-preview"
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(deftest
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"full preview at step 16 equals source"
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(let
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((result (list)))
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(split-tag test-src result)
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(let
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((expr (steps-to-preview result 16)))
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(assert-equal test-src expr))))
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(deftest
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"step 10 includes of"
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(let
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((result (list)))
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(split-tag test-src result)
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(let
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((expr (steps-to-preview result 10)))
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(assert-true (string-contains? (str expr) "of ")))))
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(deftest
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"step 9 does NOT include of (leaf not yet processed)"
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(let
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((result (list)))
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(split-tag test-src result)
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(let
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((expr (steps-to-preview result 9)))
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(assert-false (string-contains? (str expr) "of ")))))
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(deftest
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"step 8 shows the and joy only"
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(let
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((result (list)))
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(split-tag test-src result)
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(let
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((expr (steps-to-preview result 8)))
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(assert-true (string-contains? (str expr) "the "))
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(assert-true (string-contains? (str expr) "joy "))
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(assert-false (string-contains? (str expr) "of "))))))
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@@ -5,12 +5,12 @@
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((source "(div (~tw :tokens \"text-center\")\n (h1 (~tw :tokens \"text-3xl font-bold mb-2\")\n (span (~tw :tokens \"text-rose-500\") \"the \")\n (span (~tw :tokens \"text-amber-500\") \"joy \")\n (span (~tw :tokens \"text-emerald-500\") \"of \")\n (span (~tw :tokens \"text-violet-600 text-4xl\") \"sx\")))")
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(steps (signal (list)))
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(store
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(if (client?) (def-store "home-stepper" (fn () {:step-idx (signal 9)})) nil))
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(step-idx (if store (get store "step-idx") (signal 9)))
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(if (client?) (def-store "home-stepper" (fn () {:step-idx (signal 16)})) nil))
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(step-idx (if store (get store "step-idx") (signal 16)))
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(dom-stack-sig (signal (list)))
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(code-tokens (signal (list))))
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(letrec
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((split-tag (fn (expr result) (cond (not (list? expr)) (append! result {:expr expr :type "leaf"}) (empty? expr) nil (not (= (type-of (first expr)) "symbol")) (append! result {:expr expr :type "leaf"}) (is-html-tag? (symbol-name (first expr))) (let ((ctag (symbol-name (first expr))) (cargs (rest expr)) (cch (mutable-list)) (cat (mutable-list)) (spreads (mutable-list)) (ckw false)) (for-each (fn (a) (cond (= (type-of a) "keyword") (do (set! ckw true) (append! cat a)) ckw (do (set! ckw false) (append! cat a)) (and (list? a) (not (empty? a)) (= (type-of (first a)) "symbol") (starts-with? (symbol-name (first a)) "~")) (do (set! ckw false) (append! spreads a)) :else (do (set! ckw false) (append! cch a)))) cargs) (append! result {:spreads spreads :tag ctag :type "open" :attrs cat}) (for-each (fn (c) (split-tag c result)) cch) (append! result {:open-attrs cat :open-spreads spreads :tag ctag :type "close"})) :else (append! result {:expr expr :type "expr"}))))
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((split-tag (fn (expr result) (cond (not (list? expr)) (append! result {:expr expr :type "leaf"}) (empty? expr) nil (not (= (type-of (first expr)) "symbol")) (append! result {:expr expr :type "leaf"}) (is-html-tag? (symbol-name (first expr))) (let ((ctag (symbol-name (first expr))) (cargs (rest expr)) (cch (list)) (cat (list)) (spreads (list)) (ckw false)) (for-each (fn (a) (cond (= (type-of a) "keyword") (do (set! ckw true) (append! cat a)) ckw (do (set! ckw false) (append! cat a)) (and (list? a) (not (empty? a)) (= (type-of (first a)) "symbol") (starts-with? (symbol-name (first a)) "~")) (do (set! ckw false) (append! spreads a)) :else (do (set! ckw false) (append! cch a)))) cargs) (append! result {:spreads spreads :tag ctag :type "open" :attrs cat}) (for-each (fn (c) (split-tag c result)) cch) (append! result {:open-attrs cat :open-spreads spreads :tag ctag :type "close"})) :else (append! result {:expr expr :type "expr"}))))
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(build-code-tokens
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(fn
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(expr tokens step-ref indent)
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@@ -99,9 +99,9 @@
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(let
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((pos (dict "i" 0)) (max-i (min target (len all-steps))))
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(letrec
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((bc-loop (fn (children) (if (>= (get pos "i") max-i) children (let ((step (nth all-steps (get pos "i"))) (stype (get step "type"))) (cond (= stype "open") (do (dict-set! pos "i" (+ (get pos "i") 1)) (let ((tag (get step "tag")) (attrs (or (get step "attrs") (list))) (spreads (or (get step "spreads") (list))) (inner (bc-loop (mutable-list)))) (append! children (concat (list (make-symbol tag)) spreads attrs inner))) (bc-loop children)) (= stype "close") (do (dict-set! pos "i" (+ (get pos "i") 1)) children) (= stype "leaf") (do (dict-set! pos "i" (+ (get pos "i") 1)) (append! children (get step "expr")) (bc-loop children)) (= stype "expr") (do (dict-set! pos "i" (+ (get pos "i") 1)) (append! children (get step "expr")) (bc-loop children)) :else (do (dict-set! pos "i" (+ (get pos "i") 1)) (bc-loop children))))))))
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((bc-loop (fn (children) (if (>= (get pos "i") max-i) children (let ((step (nth all-steps (get pos "i"))) (stype (get step "type"))) (cond (= stype "open") (do (dict-set! pos "i" (+ (get pos "i") 1)) (let ((tag (get step "tag")) (attrs (or (get step "attrs") (list))) (spreads (or (get step "spreads") (list))) (inner (bc-loop (list)))) (append! children (concat (list (make-symbol tag)) spreads attrs inner))) (bc-loop children)) (= stype "close") (do (dict-set! pos "i" (+ (get pos "i") 1)) children) (= stype "leaf") (do (dict-set! pos "i" (+ (get pos "i") 1)) (append! children (get step "expr")) (bc-loop children)) (= stype "expr") (do (dict-set! pos "i" (+ (get pos "i") 1)) (append! children (get step "expr")) (bc-loop children)) :else (do (dict-set! pos "i" (+ (get pos "i") 1)) (bc-loop children))))))))
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(let
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((root (bc-loop (mutable-list))))
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((root (bc-loop (list))))
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(cond
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(= (len root) 1)
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(first root)
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@@ -295,11 +295,11 @@
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(when
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(not (empty? parsed))
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(let
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((result (mutable-list)) (step-ref (dict "v" 0)))
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((result (list)) (step-ref (dict "v" 0)))
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(split-tag (first parsed) result)
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(reset! steps result)
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(let
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((tokens (mutable-list)))
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((tokens (list)))
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(dict-set! step-ref "v" 0)
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(build-code-tokens (first parsed) tokens step-ref 0)
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(reset! code-tokens tokens)))))
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@@ -1,31 +1,81 @@
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const { test, expect } = require('playwright/test');
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const { loadPage, trackErrors } = require('./helpers');
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test('home page stepper: no raw SX component calls visible', async ({ page }) => {
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test('stepper: no raw SX component calls visible after hydration', async ({ page }) => {
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const t = trackErrors(page);
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await loadPage(page, '');
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const stepper = page.locator('[data-sx-island="home/stepper"]');
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await expect(stepper).toBeVisible({ timeout: 10000 });
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// The lake (rendered preview) should NOT show raw component calls
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const lake = stepper.locator('[data-sx-lake]');
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await expect(lake).toBeVisible({ timeout: 5000 });
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const lakeText = await lake.textContent();
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expect(lakeText).not.toContain('~cssx/tw');
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expect(lakeText).not.toContain('~tw');
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expect(lakeText).not.toContain(':tokens');
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// Should show rendered content (colored text)
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expect(lakeText.length).toBeGreaterThan(5);
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// Stepper navigation should work
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const buttons = stepper.locator('button');
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await expect(buttons).toHaveCount(2);
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const textBefore = await stepper.textContent();
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await buttons.last().click();
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await page.waitForTimeout(300);
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const textAfter = await stepper.textContent();
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expect(textAfter).not.toBe(textBefore);
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expect(t.errors()).toEqual([]);
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});
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test('stepper: default view shows all four words', async ({ page }) => {
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// Clear stepper cookie
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await page.context().clearCookies();
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await loadPage(page, '');
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const lake = page.locator('[data-sx-lake="home-preview"]');
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await expect(lake).toBeVisible({ timeout: 10000 });
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// Wait for hydration
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await page.waitForTimeout(2000);
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const text = await lake.textContent();
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// All four words should be present after hydration
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expect(text).toContain('the');
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expect(text).toContain('joy');
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expect(text).toContain('of');
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expect(text).toContain('sx');
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});
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test('stepper: all spans inside h1 with correct structure', async ({ page }) => {
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await page.context().clearCookies();
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await loadPage(page, '');
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await page.waitForTimeout(3000);
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const lake = page.locator('[data-sx-lake="home-preview"]');
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const h1 = lake.locator('h1');
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await expect(h1).toBeVisible({ timeout: 5000 });
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// All colored spans should be inside the h1
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const spans = h1.locator('span');
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const count = await spans.count();
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expect(count).toBeGreaterThanOrEqual(4);
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});
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test('stepper: stepping forward renders styled text', async ({ page }) => {
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// Start from step 0
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await page.context().addCookies([{
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name: 'sx-home-stepper',
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value: '0',
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url: 'http://localhost:8013'
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}]);
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await loadPage(page, '');
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await page.waitForTimeout(3000);
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const fwdBtn = page.locator('button:has-text("▶")');
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await expect(fwdBtn).toBeVisible({ timeout: 5000 });
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// Step forward 10 times to get through "of"
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for (let i = 0; i < 10; i++) {
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await fwdBtn.click();
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await page.waitForTimeout(300);
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}
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const lake = page.locator('[data-sx-lake="home-preview"]');
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const text = await lake.textContent();
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expect(text).toContain('of');
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// The "of" text should be in a styled span (with sx- or data-tw class)
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const styledSpan = lake.locator('span[data-tw]').filter({ hasText: 'of' });
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const count = await styledSpan.count();
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expect(count).toBeGreaterThan(0);
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});
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@@ -49,7 +49,7 @@
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"Other")))
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(when
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(not (has-key? categories category))
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(dict-set! categories category (mutable-list)))
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(dict-set! categories category (list)))
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(append! (get categories category) {:doc (or (get kwargs "doc") "") :example (or (get kwargs "example") "") :tail-position (or (get kwargs "tail-position") "") :syntax (or (get kwargs "syntax") "") :name name}))))
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parsed-exprs)
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categories)))
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@@ -200,7 +200,7 @@
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(fn
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((pages-raw :as list))
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(let
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((pages-data (mutable-list)) (client-count 0) (server-count 0))
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((pages-data (list)) (client-count 0) (server-count 0))
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(for-each
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(fn
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((page :as dict))
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