Move regression and other tests to separate directory

scripts/lua/modules/timeseries/tests/utils_test.lua

@@ -0,0 +1,45 @@
+--
+-- (C) 2018 - ntop.org
+--
+
+local ts_common = require("ts_common")
+
+local function interpolateSerie_test1(test)
+  local serie = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}
+  local target_points = 19
+  local max_err_perc = 10
+  local res = ts_common.upsampleSerie(serie, target_points)
+
+  if not(#res == target_points) then
+    return test:assertion_failed("target_points == #res")
+  end
+
+  local sum = function(a)
+    local s = 0
+    for _, x in pairs(a) do
+      s = s + x
+    end
+    return s
+  end
+
+  local avg1 = sum(serie) / #serie
+  local avg2 = sum(res) / #res
+  local err = math.abs(avg1 - avg2)
+  local err_perc = err * 100 / avg1
+
+  if not(err_perc <= max_err_perc) then
+    return test:failure("err <= ".. max_err_perc .."%")
+  end
+
+  return test:success()
+end
+
+function run(tester)
+  local rv = tester.run_test("interpolateSerie:test1", interpolateSerie_test1)
+
+  return rv
+end
+
+return {
+  run = run
+}