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rose-ash/next/tests/projection_server.sh
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fed-sx-m1: Step 7b — gen_server-per-projection (start_link/3 + async_fold + query) + 11 tests
2026-05-28 06:22:11 +00:00

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#!/usr/bin/env bash
# next/tests/projection_server.sh — Step 7b acceptance test.
#
# Exercises gen_server-per-projection: start_link/3, async_fold/2,
# query/1. Each test inlines start_link with operations because
# the Erlang-on-SX scheduler doesn't preserve processes across
# separate erlang-eval-ast invocations. 10 cases.
set -uo pipefail
cd "$(git rev-parse --show-toplevel)"
SX_SERVER="${SX_SERVER:-hosts/ocaml/_build/default/bin/sx_server.exe}"
if [ ! -x "$SX_SERVER" ]; then
SX_SERVER="/root/rose-ash/hosts/ocaml/_build/default/bin/sx_server.exe"
fi
if [ ! -x "$SX_SERVER" ]; then
echo "ERROR: sx_server.exe not found." >&2
exit 1
fi
VERBOSE="${1:-}"
PASS=0; FAIL=0; ERRORS=""
TMPFILE=$(mktemp); trap "rm -f $TMPFILE" EXIT
cat > "$TMPFILE" <<'EPOCHS'
(epoch 1)
(load "lib/erlang/tokenizer.sx")
(load "lib/erlang/parser.sx")
(load "lib/erlang/parser-core.sx")
(load "lib/erlang/parser-expr.sx")
(load "lib/erlang/parser-module.sx")
(load "lib/erlang/transpile.sx")
(load "lib/erlang/runtime.sx")
(load "lib/erlang/vm/dispatcher.sx")
(epoch 2)
(eval "(er-load-gen-server!)")
(epoch 3)
(eval "(get (erlang-load-module (file-read \"next/kernel/projection.erl\")) :name)")
;; start_link returns a Pid registered under the given name
(epoch 10)
(eval "(get (erlang-eval-ast \"is_pid(projection:start_link(p1, 0, fun (_A, S) -> S + 1 end))\") :name)")
;; query before any async_fold returns initial state
(epoch 11)
(eval "(erlang-eval-ast \"projection:start_link(p1, 0, fun (_A, S) -> S + 1 end), projection:query(p1)\")")
;; Single async_fold + query returns new state
(epoch 12)
(eval "(erlang-eval-ast \"projection:start_link(p1, 0, fun (_A, S) -> S + 1 end), projection:async_fold(p1, a), projection:query(p1)\")")
;; Five async_folds accumulate
(epoch 13)
(eval "(erlang-eval-ast \"projection:start_link(p1, 0, fun (_A, S) -> S + 1 end), projection:async_fold(p1, 1), projection:async_fold(p1, 2), projection:async_fold(p1, 3), projection:async_fold(p1, 4), projection:async_fold(p1, 5), projection:query(p1)\")")
;; Custom initial state preserved
(epoch 14)
(eval "(erlang-eval-ast \"projection:start_link(p1, 42, fun (A, S) -> S + A end), projection:query(p1)\")")
;; Fold can read the activity (sum activities)
(epoch 15)
(eval "(erlang-eval-ast \"projection:start_link(p1, 0, fun (A, S) -> S + A end), projection:async_fold(p1, 10), projection:async_fold(p1, 20), projection:async_fold(p1, 30), projection:query(p1)\")")
;; List-append fold preserves insertion order (newest-first)
(epoch 16)
(eval "(get (erlang-eval-ast \"projection:start_link(p1, [], fun (A, S) -> [A | S] end), projection:async_fold(p1, a), projection:async_fold(p1, b), projection:async_fold(p1, c), projection:query(p1) =:= [c, b, a]\") :name)")
;; Two named projections are independent
(epoch 17)
(eval "(get (erlang-eval-ast \"projection:start_link(p1, 0, fun (_A, S) -> S + 1 end), projection:start_link(p2, [], fun (A, S) -> [A | S] end), projection:async_fold(p1, x), projection:async_fold(p1, y), projection:async_fold(p2, x), {projection:query(p1), projection:query(p2)} =:= {2, [x]}\") :name)")
;; Conditional fold (filter on activity tag)
(epoch 18)
(eval "(erlang-eval-ast \"projection:start_link(p1, 0, fun (A, S) -> case A of {keep, _} -> S + 1; _ -> S end end), projection:async_fold(p1, {keep, a}), projection:async_fold(p1, plain), projection:async_fold(p1, {keep, b}), projection:async_fold(p1, plain), projection:query(p1)\")")
EPOCHS
OUTPUT=$(timeout 180 "$SX_SERVER" < "$TMPFILE" 2>/dev/null)
check() {
local epoch="$1" desc="$2" expected="$3"
local actual
actual=$(echo "$OUTPUT" | awk -v e="$epoch" '
$0 ~ "^\\(ok-len " e " " { getline; print; exit }
$0 ~ "^\\(ok " e " " { print; exit }
$0 ~ "^\\(error " e " " { print; exit }
')
[ -z "$actual" ] && actual="<no output for epoch $epoch>"
if echo "$actual" | grep -qF -- "$expected"; then
PASS=$((PASS+1))
[ "$VERBOSE" = "-v" ] && echo " ok $desc"
else
FAIL=$((FAIL+1))
ERRORS+=" FAIL [$desc] (epoch $epoch) expected: $expected | actual: $actual
"
fi
}
check 2 "gen_server loaded" "gen_server"
check 3 "projection module loaded" "projection"
check 10 "start_link returns Pid" "true"
check 11 "initial state via query" "0"
check 12 "async_fold + query" "1"
check 13 "five async_folds accumulate" "5"
check 14 "custom initial state" "42"
check 15 "fold reads activity (sum)" "60"
check 16 "list-append fold order" "true"
check 17 "two named projections indep." "true"
check 18 "conditional fold (filter)" "2"
TOTAL=$((PASS+FAIL))
if [ $FAIL -eq 0 ]; then
echo "ok $PASS/$TOTAL next/tests/projection_server.sh passed"
else
echo "FAIL $PASS/$TOTAL passed, $FAIL failed:"
echo "$ERRORS"
fi
[ $FAIL -eq 0 ]