mgm: remove untested gating from tested methods (#623)

Removes the `#[cfg(feature = "untested")]` gating from all methods
tested in `tests/integration.rs` and their dependent codepaths.

src/metadata.rs

@@ -30,16 +30,15 @@
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-use std::marker::PhantomData;
+use std::{iter, marker::PhantomData};
 use zeroize::Zeroizing;
 
-use crate::{serialization::*, transaction::Transaction, Buffer, Error, Result};
-
-#[cfg(feature = "untested")]
-use crate::consts::{CB_OBJ_MAX, CB_OBJ_TAG_MAX};
-
-#[cfg(feature = "untested")]
-use std::iter;
+use crate::{
+    consts::{CB_OBJ_MAX, CB_OBJ_TAG_MAX},
+    serialization::*,
+    transaction::Transaction,
+    Buffer, Error, Result,
+};
 
 const TAG_ADMIN: u8 = 0x80;
 const TAG_PROTECTED: u8 = 0x88;
@@ -87,7 +86,6 @@ impl<T: MetadataType> Metadata<T> {
     }
 
     /// Write metadata
-    #[cfg(feature = "untested")]
     pub(crate) fn write(&self, txn: &Transaction<'_>) -> Result<()> {
         if self.inner.len() > CB_OBJ_MAX - CB_OBJ_TAG_MAX {
             return Err(Error::GenericError);
@@ -104,7 +102,6 @@ impl<T: MetadataType> Metadata<T> {
     }
 
     /// Delete metadata
-    #[cfg(feature = "untested")]
     pub(crate) fn delete(txn: &Transaction<'_>) -> Result<()> {
         txn.save_object(T::obj_id(), &[])
     }
@@ -127,7 +124,6 @@ impl<T: MetadataType> Metadata<T> {
     }
 
     /// Set metadata item
-    #[cfg(feature = "untested")]
     pub(crate) fn set_item(&mut self, tag: u8, item: &[u8]) -> Result<()> {
         let mut cb_temp: usize = 0;
         let mut tag_temp: u8 = 0;
@@ -216,7 +212,6 @@ impl<T: MetadataType> Metadata<T> {
 }
 
 /// Get the size of a length tag for the given length
-#[cfg(feature = "untested")]
 fn get_length_size(length: usize) -> usize {
     if length < 0x80 {
         1