tests/lapi: update assertions in os tests

The patch updates assertions for values returned by `os.date()`
and `os.time()`, LuaJIT-specific type checks moved under condition.

Author: ligurio

tests/lapi/os_date_test.lua

@@ -32,9 +32,12 @@ local function TestOneInput(buf)
     local err_handler = test_lib.err_handler(ignored_msgs)
     local ok, res = xpcall(os.date, err_handler, format, time)
     if not ok then return end
-    assert(type(res) == "string" or
-           type(res) == "table" or
-           -- Undocumented.
+    local type_check = type(res) == "string" or type(res) == "table"
+    if test_lib.lua_version() ~= "LuaJIT" then
+        assert(type_check)
+    end
+    assert(type_check or
+           -- LuaJIT-specific type checks.
            type(res) == "number" or
            res == nil)
 end

tests/lapi/os_time_test.lua

@@ -32,10 +32,12 @@ local function TestOneInput(buf)
     local err_handler = test_lib.err_handler(ignored_msgs)
     local ok, res = xpcall(os.time, err_handler, time)
     if not ok then return end
-    io.stderr:write(type(res) .. "\n")
-    assert(type(res) == "number" or
-           type(res) == "table" or
-           -- Undocumented.
+    local type_check = type(res) == "number" or type(res) == "table"
+    if test_lib.lua_version() ~= "LuaJIT" then
+        assert(type_check)
+    end
+    assert(type_check or
+           -- LuaJIT-specific type checks.
            res == nil)
 end