package forecast

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

func TestFileFetcherAndRecords(t *testing.T) {
	path := filepath.Join(t.TempDir(), "fco.csv")
	if err := os.WriteFile(path, []byte(fcoCSV), 0o600); err != nil {
		t.Fatalf("write fixture: %v", err)
	}
	src := NewSource("GSA Forecast", FileFetcher(path), GSAFCOMapping())
	if src.Name() != "GSA Forecast" {
		t.Fatalf("name = %q", src.Name())
	}
	recs, skipped, err := src.Records(context.Background())
	if err != nil {
		t.Fatalf("Records: %v", err)
	}
	if len(recs) != 3 || skipped != 1 {
		t.Fatalf("recs = %d, skipped = %d, want 3 and 1", len(recs), skipped)
	}
}

func TestFileFetcherMissingFile(t *testing.T) {
	src := NewSource("X", FileFetcher("/no/such/forecast.csv"), GSAFCOMapping())
	if _, _, err := src.Records(context.Background()); err == nil {
		t.Fatal("a missing export file must surface an error")
	}
}