import format
import gleam/dict
import gleam/string
import gleeunit
import procfs

pub fn main() -> Nil {
  gleeunit.main()
}

pub fn human_kb_test() {
  let assert "512K" = format.human_kb(512)
  let assert True = string.contains(format.human_kb(2048), "M")
  let assert True = string.contains(format.human_kb(2_097_152), "G")
}

pub fn percent_and_meter_test() {
  let assert True = string.contains(format.percent(12.3), "%")
  let m = format.meter(50.0, 10)
  let assert 10 = string.length(m)
  let s = format.sparkline([0.0, 25.0, 50.0, 75.0, 100.0], 5)
  let assert 5 = string.length(s)
}

pub fn band_test() {
  let assert format.Low = format.band(10.0)
  let assert format.Mid = format.band(50.0)
  let assert format.High = format.band(75.0)
  let assert format.Critical = format.band(95.0)
}

pub fn ticks_to_time_test() {
  // 100 ticks = 1.00s at CLK_TCK=100
  let t = procfs.ticks_to_time(100)
  let assert True = string.contains(t, "1")
}

pub fn sample_smoke_test() {
  let snap0 = procfs.sample_with_core_history(0, 0, dict.new(), dict.new())
  let assert True = snap0.process_count > 0
  let assert True = snap0.mem.total_kb > 0
  let assert True = string.length(snap0.hostname) > 0

  let snap1 =
    procfs.sample_with_core_history(
      snap0.prev_cpu_total,
      snap0.prev_cpu_idle,
      procfs.core_history_from(snap0),
      snap0.prev_proc_ticks,
    )
  let assert True = snap1.cpu_total_percent >=. 0.0
  let assert True = snap1.cpu_total_percent <=. 100.0
}