tests: added time limit to base32 random tests

Author: spacewander

t/base32.t

@@ -281,18 +281,26 @@ decode: MMMMMM: invalid input
 
 === TEST 5: random tests
 --- lua
-for _ = 1, 1e6 do
-    local size = math.random(1, 20)
-    local buf = table.new(size, 0)
-    for i = 1, size do
-        buf[i] = math.random(33, 126)
+local start = ngx.now()
+while ture do
+    for _ = 1, 1000 do
+        local size = math.random(1, 20)
+        local buf = table.new(size, 0)
+        for i = 1, size do
+            buf[i] = math.random(33, 126)
+        end
+
+        local raw = string.char(unpack(buf))
+        local encoded = base_encoding.encode_base32(raw)
+        if base_encoding.decode_base32(encoded) ~= raw then
+            ngx.say("failed case: ", raw)
+            return
+        end
     end
 
-    local raw = string.char(unpack(buf))
-    local encoded = base_encoding.encode_base32(raw)
-    if base_encoding.decode_base32(encoded) ~= raw then
-        ngx.say("failed case: ", raw)
-        return
+    ngx.update_time()
+    if ngx.now() - start > 3 then
+        break
     end
 end
 ngx.say("ok")