package main

import (
	"strings"
	"testing"
)

// `prognosis -l Wiry, PL` is the unquoted form of `-l "Wiry, PL"`. The shell
// splits it, so -l gets "Wiry," and "PL" arrives as a stray positional. Dropping
// it silently is what geocoded "Wiry," to Ukraine without anyone noticing.
func TestStrayPositionalBesideDashLIsAnError(t *testing.T) {
	_, err := placeFromArgs("Wiry,", []string{"PL"})
	if err == nil {
		t.Fatal("expected an error; silently ignoring the argument hides a quoting mistake")
	}
	if !strings.Contains(err.Error(), "PL") {
		t.Errorf("error %q should name the argument that was ignored", err)
	}
}

func TestDashLIsThePlaceWhenNothingElseIsGiven(t *testing.T) {
	got, err := placeFromArgs("Wiry, PL", nil)
	if err != nil {
		t.Fatal(err)
	}
	if got != "Wiry, PL" {
		t.Errorf("got %q, want %q", got, "Wiry, PL")
	}
}

func TestPositionalsJoinIntoThePlace(t *testing.T) {
	got, err := placeFromArgs("", []string{"Wiry,", "PL"})
	if err != nil {
		t.Fatal(err)
	}
	if got != "Wiry, PL" {
		t.Errorf("got %q, want %q: bare words are still accepted as the place", got, "Wiry, PL")
	}
}

func TestNoPlaceAnywhereIsNotAnError(t *testing.T) {
	got, err := placeFromArgs("", nil)
	if err != nil {
		t.Fatalf("unexpected error %v: location= in the config is consulted next", err)
	}
	if got != "" {
		t.Errorf("got %q, want empty", got)
	}
}