Function TestBucket_Delete_Large

bucket_test.go:330–373

Ensure that deleting a large set of keys will work correctly.

(t *testing.T)

// Ensure that deleting a large set of keys will work correctly.
func TestBucket_Delete_Large(t *testing.T) {
	db := btesting.MustCreateDB(t)

	if err := db.Update(func(tx *bolt.Tx) error {
		b, err := tx.CreateBucket([]byte("widgets"))
		if err != nil {
			t.Fatal(err)
		}

		for i := 0; i < 100; i++ {
			if err := b.Put([]byte(strconv.Itoa(i)), []byte(strings.Repeat("*", 1024))); err != nil {
				t.Fatal(err)
			}
		}

		return nil
	}); err != nil {
		t.Fatal(err)
	}

	if err := db.Update(func(tx *bolt.Tx) error {
		b := tx.Bucket([]byte("widgets"))
		for i := 0; i < 100; i++ {
			if err := b.Delete([]byte(strconv.Itoa(i))); err != nil {
				t.Fatal(err)
			}
		}
		return nil
	}); err != nil {
		t.Fatal(err)
	}

	if err := db.View(func(tx *bolt.Tx) error {
		b := tx.Bucket([]byte("widgets"))
		for i := 0; i < 100; i++ {
			if v := b.Get([]byte(strconv.Itoa(i))); v != nil {
				t.Fatalf("unexpected value: %v, i=%d", v, i)
			}
		}
		return nil
	}); err != nil {
		t.Fatal(err)
	}
}

// Deleting a very large list of keys will cause the freelist to use overflow.
func TestBucket_Delete_FreelistOverflow(t *testing.T) {