Make short duration formatter re-useable

kittens/transfer/send_test.go

@@ -101,25 +101,3 @@ func TestPathMappingSend(t *testing.T) {
 		ae(f.file_type, FileType_link)
 	})
 }
-
-func TestRenderDuration(t *testing.T) {
-	q := func(i float64, e string) {
-		d := time.Duration(i * float64(time.Second))
-		if diff := cmp.Diff(e, render_duration(d)); diff != "" {
-			t.Fatalf("Failed for %f (%s): %s", i, d, diff)
-		}
-	}
-	q(0.1, "  <1 sec")
-	q(1, `00:00:01`)
-	q(1.1234567, `00:00:01`)
-	q(60.1234567, `00:01:00`)
-	q(61.1234567, `00:01:01`)
-	q(3600, `01:00:00`)
-	q(3601.1234567, `01:00:01`)
-	day := 24. * 3600.
-	q(day, "24:00:00")
-	q(day+1, "  >1 day")
-	q(day*2, " >2 days")
-	q(day*23, ">23 days")
-	q(day*999, "       ∞")
-}