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package render
import (
"strings"
"testing"
)
func TestASCIIIsPureASCII(t *testing.T) {
in := " ! Upał stopień 1\n 14 29° (28) zachmurzenie ↗\n 30°│███▄▄▁"
got := ASCII(in, "metric")
for _, r := range got {
if r > 127 {
t.Fatalf("non-ASCII %q survived in %q", r, got)
}
}
}
// Substitution runs after layout, so it must not change the character count --
// otherwise every column to the right of a degree sign shears.
func TestASCIIPreservesLength(t *testing.T) {
for _, in := range []string{
" 14 29° (28) zachmurzenie",
" 30°│███▄▄▁▂",
" godz temp odczuw warunki",
" słońce 12h03m z 14h45m dnia",
} {
if got := ASCII(in, "metric"); len([]rune(got)) != len([]rune(in)) {
t.Errorf("length changed: %q (%d) -> %q (%d)",
in, len([]rune(in)), got, len([]rune(got)))
}
}
}
// IMGW prose already writes "30°C"; the unit letter must not be doubled.
func TestASCIIDoesNotDoubleTheUnitInProse(t *testing.T) {
got := ASCII("temperatura od 30°C do 33°C", "metric")
if strings.Contains(got, "CC") {
t.Fatalf("doubled unit: %q", got)
}
if got != "temperatura od 30C do 33C" {
t.Fatalf("got %q", got)
}
}
func TestASCIIUsesFahrenheitLetterInImperial(t *testing.T) {
if got := ASCII("85°", "imperial"); got != "85F" {
t.Fatalf("got %q, want 85F", got)
}
}
func TestASCIIMarksUnmappedRunesRatherThanDroppingThem(t *testing.T) {
if got := ASCII("東京", "metric"); got != "??" {
t.Fatalf("got %q, want ??", got)
}
}
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