issue #141 amend tests to make them work reasonably

lua-tests/all.lua

@@ -22,6 +22,8 @@ _soft = rawget(_G, "_soft") or false
 _port = rawget(_G, "_port") or false
 -- Make true to avoid messages about tests not performed
 _nomsg = rawget(_G, "_nomsg") or false
+-- JIT test mode, 1 = some time consuming tests skipped, 2 = all tests
+_jit = rawget(_G, "_jit") or 1 
 
 
 local usertests = rawget(_G, "_U")
@@ -150,9 +152,7 @@ end
 
 report"gc.lua"
 local f = assert(loadfile('gc.lua'))
-if ravi then ravi.gcstep(0) end
 f()
-if ravi then ravi.gcstep(300) end
 if not ravi or not ravi.auto() or ravi.tracehook() then
   -- in JIT mode we need tracehook enabled
   dofile('db.lua')

lua-tests/constructs.lua

@@ -278,7 +278,7 @@ local function createcases (n)
 end
 
 -- do not do too many combinations for soft tests
-local level = _soft and 3 or 4
+local level = (_soft or _jit == 1) and 3 or 4
 
 cases[1] = basiccases
 for i = 2, level do cases[i] = createcases(i) end
@@ -294,6 +294,9 @@ for n = 1, level do
     IX = false
     assert(p() == v[2] and IX == not not v[2])
     i = i + 1
+    if _jit > 0 and i % 1000 == 0 then
+      collectgarbage()
+    end
     if i % 60000 == 0 then print('+') end
   end
 end