package db

import (
	"context"
	"testing"
)

func TestEnsureUser(t *testing.T) {
	s, _, cleanup := newTestStore(t)
	defer cleanup()
	ctx := context.Background()

	id, err := s.EnsureUser(ctx, "bigbes")
	if err != nil {
		t.Fatalf("ensure user (insert): %v", err)
	}
	if id == 0 {
		t.Fatal("expected a non-zero user id")
	}

	// Idempotent: a second call for the same username returns the same id.
	id2, err := s.EnsureUser(ctx, "bigbes")
	if err != nil {
		t.Fatalf("ensure user (upsert): %v", err)
	}
	if id2 != id {
		t.Fatalf("ensure user id changed: got %d, want %d", id2, id)
	}

	// A different username gets its own row.
	other, err := s.EnsureUser(ctx, "someone")
	if err != nil {
		t.Fatalf("ensure other user: %v", err)
	}
	if other == id {
		t.Fatalf("distinct username reused id %d", id)
	}
}