Update ObjectId generation to be deterministic using generates bytes …

…and bson::oid::ObjectId::from_bytes. Add test for determinism for bson_oid feature

fake/src/impls/bson_oid/mod.rs

@@ -5,7 +5,9 @@ use bson::oid::ObjectId;
 use crate::{Dummy, Faker};
 
 impl Dummy<Faker> for ObjectId {
-    fn dummy_with_rng<R: rand::Rng + ?Sized>(_: &Faker, _rng: &mut R) -> Self {
-        ObjectId::new()
+    fn dummy_with_rng<R: rand::Rng + ?Sized>(_: &Faker, rng: &mut R) -> Self {
+        let mut bytes = [0u8; 12];
+        rng.fill(&mut bytes);
+        ObjectId::from_bytes(bytes)
     }
 }

fake/tests/determinism.rs

@@ -358,3 +358,13 @@ mod serde_json {
     use rand::SeedableRng as _;
     check_determinism! { one fake_serde_json, serde_json::Value, Faker }
 }
+
+// BSON ObjectId
+#[cfg(feature = "bson_oid")]
+mod bson_oid {
+    use bson::oid::ObjectId;
+    use fake::{Fake, Faker};
+    use rand::SeedableRng as _;
+
+    check_determinism! { one fake_bson_oid, ObjectId, Faker }
+}