RUST-433 Rename "Tag" Acknowledgement case to "Custom" (#183)

Author: isabelatkinson

src/concern/mod.rs

@@ -165,9 +165,9 @@ pub enum Acknowledgment {
     Nodes(i32),
     /// Requires acknowledgement that the write has reached the majority of nodes.
     Majority,
-    /// Requires acknowledgement according to the given write tag. See [here](https://docs.mongodb.com/manual/tutorial/configure-replica-set-tag-sets/#tag-sets-and-custom-write-concern-behavior)
+    /// Requires acknowledgement according to the given custom write concern. See [here](https://docs.mongodb.com/manual/tutorial/configure-replica-set-tag-sets/#tag-sets-and-custom-write-concern-behavior)
     /// for more information.
-    Tag(String),
+    Custom(String),
 }
 
 impl Serialize for Acknowledgment {
@@ -178,7 +178,7 @@ impl Serialize for Acknowledgment {
         match self {
             Acknowledgment::Majority => serializer.serialize_str("majority"),
             Acknowledgment::Nodes(n) => serializer.serialize_i32(n.clone()),
-            Acknowledgment::Tag(tag) => serializer.serialize_str(tag),
+            Acknowledgment::Custom(name) => serializer.serialize_str(name),
         }
     }
 }
@@ -212,7 +212,7 @@ impl From<String> for Acknowledgment {
         if s == "majority" {
             Acknowledgment::Majority
         } else {
-            Acknowledgment::Tag(s)
+            Acknowledgment::Custom(s)
         }
     }
 }
@@ -226,7 +226,7 @@ impl Acknowledgment {
         match self {
             Acknowledgment::Nodes(i) => Bson::I64(i64::from(*i)),
             Acknowledgment::Majority => Bson::String("majority".to_string()),
-            Acknowledgment::Tag(s) => Bson::String(s.to_string()),
+            Acknowledgment::Custom(s) => Bson::String(s.to_string()),
         }
     }
 }

src/operation/drop_collection/test.rs

@@ -14,7 +14,7 @@ use crate::{
 async fn build() {
     let options = DropCollectionOptions {
         write_concern: Some(WriteConcern {
-            w: Some(Acknowledgment::Tag("abc".to_string())),
+            w: Some(Acknowledgment::Custom("abc".to_string())),
             ..Default::default()
         }),
     };

src/operation/drop_database/test.rs

@@ -15,7 +15,7 @@ async fn build() {
         target_db: "test_db".to_string(),
         options: Some(DropDatabaseOptions {
             write_concern: Some(WriteConcern {
-                w: Some(Acknowledgment::Tag("abc".to_string())),
+                w: Some(Acknowledgment::Custom("abc".to_string())),
                 ..Default::default()
             }),
         }),

src/sync/test.rs

@@ -115,7 +115,7 @@ fn collection() {
     assert_eq!(results, vec![doc! { "x": 1 }]);
 
     let wc = WriteConcern {
-        w: Acknowledgment::Tag("hello".to_string()).into(),
+        w: Acknowledgment::Custom("hello".to_string()).into(),
         journal: None,
         w_timeout: None,
     };