fed-sx-m1: Step 7b — gen_server-per-projection (start_link/3 + async_fold + query) + 11 tests

next/tests/projection_server.sh

@@ -0,0 +1,117 @@
+#!/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 ]