Function TestCursor_RepeatOperations

cursor_test.go:25–59

TestCursor_RepeatOperations verifies that a cursor can continue to iterate over all elements in reverse direction when it has already reached to the end or beginning. Refer to https://github.com/etcd-io/bbolt/issues/733

(t *testing.T)

// reached to the end or beginning.
// Refer to https://github.com/etcd-io/bbolt/issues/733
func TestCursor_RepeatOperations(t *testing.T) {
	testCases := []struct {
		name     string
		testFunc func(t2 *testing.T, bucket *bolt.Bucket)
	}{
		{
			name:     "Repeat NextPrevNext",
			testFunc: testRepeatCursorOperations_NextPrevNext,
		},
		{
			name:     "Repeat PrevNextPrev",
			testFunc: testRepeatCursorOperations_PrevNextPrev,
		},
	}

	for _, tc := range testCases {
		t.Run(tc.name, func(t *testing.T) {
			db := btesting.MustCreateDBWithOption(t, &bolt.Options{PageSize: 4096})

			bucketName := []byte("data")

			_ = db.Update(func(tx *bolt.Tx) error {
				b, _ := tx.CreateBucketIfNotExists(bucketName)
				testCursorRepeatOperations_PrepareData(t, b)
				return nil
			})

			_ = db.View(func(tx *bolt.Tx) error {
				b := tx.Bucket(bucketName)
				tc.testFunc(t, b)
				return nil
			})
		})
	}
}

func testCursorRepeatOperations_PrepareData(t *testing.T, b *bolt.Bucket) {
	// ensure we have at least one branch page.