test: benchmark workspace symbols search

tests/bench/speedcenter.exec.velcom.yaml

@@ -160,3 +160,9 @@
     cmd: ./unionfind.lean.out 3000000
   build_config:
     cmd: ./compile.sh unionfind.lean
+- attributes:
+    description: workspaceSymbols
+    tags: [fast, suite]
+  run_config:
+    <<: *time
+    cmd: lean workspaceSymbols.lean

tests/bench/workspaceSymbols.lean

@@ -0,0 +1,16 @@
+import Lean
+open Lean Elab
+
+def bench (pattern : String) : TermElabM Unit := do
+  let env ← getEnv
+  let mut n := 0
+  IO.println s!"{env.constants.size} decls"
+  for (c, _) in env.constants.toList do
+    if Lean.FuzzyMatching.fuzzyMatch pattern c.toString then n := n + 1
+  IO.println s!"{n} matches"
+
+set_option profiler true
+#eval bench "L"
+#eval bench "Lean."
+#eval bench "Lean.Expr"
+#eval bench "Lean.Expr.const"