fix bench basics

develop/basics.lua

@@ -14,21 +14,31 @@ end)()
 ---@param loop fun(...): ...
 ---@param init? fun(): ...
 function basics.describe_bench(name, loop, init)
-    collectgarbage('collect')
-    collectgarbage('stop')
-
     print(string.format('| %s ... |', name))
 
-    local iters = 0
     local state = init and __table_pack(init()) or {}
 
-    pcall(function()
+    do
         local warmup_s = os.clock()
+
+        local success, result = pcall(function()
             repeat
                 loop(__table_unpack(state))
             until os.clock() - warmup_s > 0.1
         end)
 
+        if not success then
+            print('|-- FAIL: ' .. result)
+            return
+        end
+    end
+
+    collectgarbage('collect')
+    collectgarbage('stop')
+
+    do
+        local iters = 0
+
         local start_s = os.clock()
         local start_kb = collectgarbage('count')
 
@@ -42,14 +52,16 @@ function basics.describe_bench(name, loop, init)
         local finish_s = os.clock()
         local finish_kb = collectgarbage('count')
 
-    print(string.format('    %s | us: %.2f | op/s: %.2f | kb/i: %.2f | iters: %d',
-        success and 'PASS' or 'FAIL',
+        if success then
+            print(string.format('|-- PASS | us: %.2f | op/s: %.2f | kb/i: %.2f | iters: %d',
                 (finish_s - start_s) * 1e6 / iters,
                 iters / (finish_s - start_s),
                 (finish_kb - start_kb) / iters,
                 iters))
-
-    if not success then print('    ' .. result) end
+        else
+            print('|-- FAIL: ' .. result)
+        end
+    end
 
     collectgarbage('restart')
     collectgarbage('collect')