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package render
import (
"testing"
"github.com/lukaszkasprzak/prognosis/internal/config"
)
// IMGW's criteria are in Celsius. Switching the display to Fahrenheit must not
// move the temperature at which the met office is said to warn.
func TestThresholdsAreComparedInCelsiusWhateverTheDisplayUnits(t *testing.T) {
metric := ctx{cfg: config.Config{Units: "metric"}}
imperial := ctx{cfg: config.Config{Units: "imperial"}}
cases := []struct {
celsius float64
fahrenheit float64
want string
why string
}{
{29, 84.2, Yellow, "below the upal threshold"},
{30, 86, Red, "upal stopien 1 is Tmax >= 30C"},
{36, 96.8, BrightRed, "the higher heat level is Tmax > 35C"},
{-15, 5, BrightBlue, "silny mroz stopien 1 is Tmin <= -15C"},
{-14, 6.8, Blue, "just above the frost threshold"},
}
for _, c := range cases {
if got := TempStyle(metric.celsius(c.celsius)); got != c.want {
t.Errorf("%.0fC -> %s, want %s (%s)", c.celsius, got, c.want, c.why)
}
if got := TempStyle(imperial.celsius(c.fahrenheit)); got != c.want {
t.Errorf("%.1fF (=%.0fC) -> %s, want %s (%s)",
c.fahrenheit, c.celsius, got, c.want, c.why)
}
}
}
func TestPollenBandEdges(t *testing.T) {
cases := []struct {
species string
value float64
want string
}{
{"grass", 0.5, "none"}, {"grass", 19, "low"}, {"grass", 20, "medium"},
{"grass", 49, "medium"}, {"grass", 50, "high"}, {"grass", 64, "high"},
{"grass", 65, "very high"}, {"grass", 200, "very high"},
{"birch", 79, "low"}, {"birch", 80, "high"},
{"mugwort", 69, "low"}, {"mugwort", 70, "high"},
{"ragweed", 50, ""}, // no Polish threshold sourced: deliberately unbanded
{"alder", 500, ""},
}
for _, c := range cases {
if got := PollenBand(c.species, c.value); got != c.want {
t.Errorf("PollenBand(%q, %v) = %q, want %q", c.species, c.value, got, c.want)
}
}
}
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