Function TestCursor_EmptyBucket

cursor_test.go:364–385

Ensure that a cursor can iterate over an empty bucket without error.

(t *testing.T)

// Ensure that a cursor can iterate over an empty bucket without error.
func TestCursor_EmptyBucket(t *testing.T) {
	db := btesting.MustCreateDB(t)
	if err := db.Update(func(tx *bolt.Tx) error {
		_, err := tx.CreateBucket([]byte("widgets"))
		return err
	}); err != nil {
		t.Fatal(err)
	}

	if err := db.View(func(tx *bolt.Tx) error {
		c := tx.Bucket([]byte("widgets")).Cursor()
		k, v := c.First()
		if k != nil {
			t.Fatalf("unexpected key: %v", k)
		} else if v != nil {
			t.Fatalf("unexpected value: %v", v)
		}
		return nil
	}); err != nil {
		t.Fatal(err)
	}
}

// Ensure that a Tx cursor can reverse iterate over an empty bucket without error.
func TestCursor_EmptyBucketReverse(t *testing.T) {