package csvparser

import (
	"errors"
	"os"
	"path/filepath"
	"testing"
)

// TestCsvParser tests the correct function of the CSV file parser
func TestCsvParser(t *testing.T) {
	check := []CsvLine{
		{Code: "Foo", Name: "bar"},
		{Code: "Bla", Name: "blub"},
		{Code: "Nom", Name: "LoL"},
		{Code: "123", Name: "256"},
		{Code: "Rawr", Name: "Bla"},
		{Code: "Lorem ipsum", Name: "dolor \"sit amet"},
		{Code: "Smile", Name: "😇"},
		{Code: "empty", Name: ""},
	}
	parsed, err := ParseFile(filepath.Join("..", "..", "test", "data", "csvparser.csv"))
	if err != nil {
		t.Fatalf("Got error: %+v", err)
	}
	if len(parsed) != len(check) {
		t.Fatalf("Slice-length mismatch, got %d, expected %d", len(parsed), len(check))
	}
	for i, item := range check {
		if item != parsed[i] {
			t.Errorf("Got wrong CSV line, got %s, expected %s", parsed[i], item)
		}
	}
}

func TestCsvParserFileError(t *testing.T) {
	_, err := ParseFile("nonexisting")
	if err == nil {
		t.Fatalf("Got no error")
	}
	if !errors.Is(err, os.ErrNotExist) {
		t.Errorf("Got error %+v, expected %+v", err, os.ErrNotExist)
	}

}