diff --git a/src/tests/issues/issue1205.rs b/src/tests/issues/issue1205.rs
index 3ccb28b409b..ffadd83fc08 100644
--- a/src/tests/issues/issue1205.rs
+++ b/src/tests/issues/issue1205.rs
@@ -1,5 +1,5 @@
 use crate::tests::builders::CrateBuilder;
-use crate::tests::util::TestApp;
+use crate::tests::util::{RequestHelper, TestApp};
 use crates_io_github::{GitHubOrganization, GitHubTeam, GitHubTeamMembership, MockGitHubClient};
 use http::StatusCode;
 use insta::assert_snapshot;
diff --git a/src/tests/mod.rs b/src/tests/mod.rs
index a4ff7f3f396..69afb419d2c 100644
--- a/src/tests/mod.rs
+++ b/src/tests/mod.rs
@@ -86,6 +86,13 @@ pub struct OkBool {
     ok: bool,
 }
 
+#[derive(Deserialize, Debug)]
+pub struct OwnerResp {
+    // server must include `ok: true` to support old cargo clients
+    ok: bool,
+    msg: String,
+}
+
 fn new_user(login: &str) -> NewUser<'_> {
     NewUser {
         gh_id: next_gh_id(),
diff --git a/src/tests/routes/crates/owners/add.rs b/src/tests/routes/crates/owners/add.rs
index 364f15e375a..7de68640355 100644
--- a/src/tests/routes/crates/owners/add.rs
+++ b/src/tests/routes/crates/owners/add.rs
@@ -16,22 +16,8 @@ async fn test_cargo_invite_owners() {
     let new_user = app.db_new_user("cilantro");
     CrateBuilder::new("guacamole", owner.as_model().id).expect_build(&mut conn);
 
-    #[derive(Serialize)]
-    struct OwnerReq {
-        owners: Option<Vec<String>>,
-    }
-    #[derive(Deserialize, Debug)]
-    struct OwnerResp {
-        // server must include `ok: true` to support old cargo clients
-        ok: bool,
-        msg: String,
-    }
-
-    let body = serde_json::to_string(&OwnerReq {
-        owners: Some(vec![new_user.as_model().gh_login.clone()]),
-    });
-    let json: OwnerResp = owner
-        .put("/api/v1/crates/guacamole/owners", body.unwrap())
+    let json = owner
+        .add_named_owner("guacamole", &new_user.as_model().gh_login)
         .await
         .good();
 
@@ -57,10 +43,7 @@ async fn owner_change_via_cookie() {
 
     let krate = CrateBuilder::new("foo_crate", cookie.as_model().id).expect_build(&mut conn);
 
-    let url = format!("/api/v1/crates/{}/owners", krate.name);
-    let body = json!({ "owners": [user2.gh_login] });
-    let body = serde_json::to_vec(&body).unwrap();
-    let response = cookie.put::<()>(&url, body).await;
+    let response = cookie.add_named_owner(&krate.name, &user2.gh_login).await;
     assert_eq!(response.status(), StatusCode::OK);
     assert_snapshot!(response.text(), @r#"{"msg":"user user-2 has been invited to be an owner of crate foo_crate","ok":true}"#);
 }
@@ -75,10 +58,7 @@ async fn owner_change_via_token() {
 
     let krate = CrateBuilder::new("foo_crate", token.as_model().user_id).expect_build(&mut conn);
 
-    let url = format!("/api/v1/crates/{}/owners", krate.name);
-    let body = json!({ "owners": [user2.gh_login] });
-    let body = serde_json::to_vec(&body).unwrap();
-    let response = token.put::<()>(&url, body).await;
+    let response = token.add_named_owner(&krate.name, &user2.gh_login).await;
     assert_eq!(response.status(), StatusCode::OK);
     assert_snapshot!(response.text(), @r#"{"msg":"user user-2 has been invited to be an owner of crate foo_crate","ok":true}"#);
 }
@@ -95,10 +75,7 @@ async fn owner_change_via_change_owner_token() {
 
     let krate = CrateBuilder::new("foo_crate", token.as_model().user_id).expect_build(&mut conn);
 
-    let url = format!("/api/v1/crates/{}/owners", krate.name);
-    let body = json!({ "owners": [user2.gh_login] });
-    let body = serde_json::to_vec(&body).unwrap();
-    let response = token.put::<()>(&url, body).await;
+    let response = token.add_named_owner(&krate.name, &user2.gh_login).await;
     assert_eq!(response.status(), StatusCode::OK);
     assert_snapshot!(response.text(), @r#"{"msg":"user user-2 has been invited to be an owner of crate foo_crate","ok":true}"#);
 }
@@ -115,10 +92,7 @@ async fn owner_change_via_change_owner_token_with_matching_crate_scope() {
 
     let krate = CrateBuilder::new("foo_crate", token.as_model().user_id).expect_build(&mut conn);
 
-    let url = format!("/api/v1/crates/{}/owners", krate.name);
-    let body = json!({ "owners": [user2.gh_login] });
-    let body = serde_json::to_vec(&body).unwrap();
-    let response = token.put::<()>(&url, body).await;
+    let response = token.add_named_owner(&krate.name, &user2.gh_login).await;
     assert_eq!(response.status(), StatusCode::OK);
     assert_snapshot!(response.text(), @r#"{"msg":"user user-2 has been invited to be an owner of crate foo_crate","ok":true}"#);
 }
@@ -135,10 +109,7 @@ async fn owner_change_via_change_owner_token_with_wrong_crate_scope() {
 
     let krate = CrateBuilder::new("foo_crate", token.as_model().user_id).expect_build(&mut conn);
 
-    let url = format!("/api/v1/crates/{}/owners", krate.name);
-    let body = json!({ "owners": [user2.gh_login] });
-    let body = serde_json::to_vec(&body).unwrap();
-    let response = token.put::<()>(&url, body).await;
+    let response = token.add_named_owner(&krate.name, &user2.gh_login).await;
     assert_eq!(response.status(), StatusCode::FORBIDDEN);
     assert_snapshot!(response.text(), @r#"{"errors":[{"detail":"this token does not have the required permissions to perform this action"}]}"#);
 }
@@ -155,10 +126,7 @@ async fn owner_change_via_publish_token() {
 
     let krate = CrateBuilder::new("foo_crate", token.as_model().user_id).expect_build(&mut conn);
 
-    let url = format!("/api/v1/crates/{}/owners", krate.name);
-    let body = json!({ "owners": [user2.gh_login] });
-    let body = serde_json::to_vec(&body).unwrap();
-    let response = token.put::<()>(&url, body).await;
+    let response = token.add_named_owner(&krate.name, &user2.gh_login).await;
     assert_eq!(response.status(), StatusCode::FORBIDDEN);
     assert_snapshot!(response.text(), @r#"{"errors":[{"detail":"this token does not have the required permissions to perform this action"}]}"#);
 }
@@ -173,10 +141,7 @@ async fn owner_change_without_auth() {
 
     let krate = CrateBuilder::new("foo_crate", cookie.as_model().id).expect_build(&mut conn);
 
-    let url = format!("/api/v1/crates/{}/owners", krate.name);
-    let body = json!({ "owners": [user2.gh_login] });
-    let body = serde_json::to_vec(&body).unwrap();
-    let response = anon.put::<()>(&url, body).await;
+    let response = anon.add_named_owner(&krate.name, &user2.gh_login).await;
     assert_eq!(response.status(), StatusCode::FORBIDDEN);
     assert_snapshot!(response.text(), @r#"{"errors":[{"detail":"this action requires authentication"}]}"#);
 }
@@ -294,10 +259,7 @@ async fn test_unknown_crate() {
     let (app, _, user) = TestApp::full().with_user();
     app.db_new_user("bar");
 
-    let body = json!({ "owners": ["bar"] });
-    let body = serde_json::to_vec(&body).unwrap();
-
-    let response = user.put::<()>("/api/v1/crates/unknown/owners", body).await;
+    let response = user.add_named_owner("unknown", "bar").await;
     assert_eq!(response.status(), StatusCode::NOT_FOUND);
     assert_snapshot!(response.text(), @r#"{"errors":[{"detail":"crate `unknown` does not exist"}]}"#);
 }
@@ -309,8 +271,7 @@ async fn test_unknown_user() {
 
     CrateBuilder::new("foo", cookie.as_model().id).expect_build(&mut conn);
 
-    let body = serde_json::to_vec(&json!({ "owners": ["unknown"] })).unwrap();
-    let response = cookie.put::<()>("/api/v1/crates/foo/owners", body).await;
+    let response = cookie.add_named_owner("foo", "unknown").await;
     assert_eq!(response.status(), StatusCode::BAD_REQUEST);
     assert_snapshot!(response.text(), @r#"{"errors":[{"detail":"could not find user with login `unknown`"}]}"#);
 }
@@ -322,8 +283,9 @@ async fn test_unknown_team() {
 
     CrateBuilder::new("foo", cookie.as_model().id).expect_build(&mut conn);
 
-    let body = serde_json::to_vec(&json!({ "owners": ["github:unknown:unknown"] })).unwrap();
-    let response = cookie.put::<()>("/api/v1/crates/foo/owners", body).await;
+    let response = cookie
+        .add_named_owner("foo", "github:unknown:unknown")
+        .await;
     assert_eq!(response.status(), StatusCode::BAD_REQUEST);
     assert_snapshot!(response.text(), @r#"{"errors":[{"detail":"could not find the github team unknown/unknown. Make sure that you have the right permissions in GitHub. See https://doc.rust-lang.org/cargo/reference/publishing.html#github-permissions"}]}"#);
 }
diff --git a/src/tests/routes/crates/owners/remove.rs b/src/tests/routes/crates/owners/remove.rs
index c889ac4c7e1..b593490655e 100644
--- a/src/tests/routes/crates/owners/remove.rs
+++ b/src/tests/routes/crates/owners/remove.rs
@@ -41,12 +41,7 @@ async fn test_unknown_crate() {
     let (app, _, user) = TestApp::full().with_user();
     app.db_new_user("bar");
 
-    let body = json!({ "owners": ["bar"] });
-    let body = serde_json::to_vec(&body).unwrap();
-
-    let response = user
-        .delete_with_body::<()>("/api/v1/crates/unknown/owners", body)
-        .await;
+    let response = user.remove_named_owner("unknown", "bar").await;
     assert_eq!(response.status(), StatusCode::NOT_FOUND);
     assert_snapshot!(response.text(), @r#"{"errors":[{"detail":"crate `unknown` does not exist"}]}"#);
 }
@@ -58,10 +53,7 @@ async fn test_unknown_user() {
 
     CrateBuilder::new("foo", cookie.as_model().id).expect_build(&mut conn);
 
-    let body = serde_json::to_vec(&json!({ "owners": ["unknown"] })).unwrap();
-    let response = cookie
-        .delete_with_body::<()>("/api/v1/crates/foo/owners", body)
-        .await;
+    let response = cookie.remove_named_owner("foo", "unknown").await;
     assert_eq!(response.status(), StatusCode::BAD_REQUEST);
     assert_snapshot!(response.text(), @r#"{"errors":[{"detail":"could not find user with login `unknown`"}]}"#);
 }
@@ -73,9 +65,8 @@ async fn test_unknown_team() {
 
     CrateBuilder::new("foo", cookie.as_model().id).expect_build(&mut conn);
 
-    let body = serde_json::to_vec(&json!({ "owners": ["github:unknown:unknown"] })).unwrap();
     let response = cookie
-        .delete_with_body::<()>("/api/v1/crates/foo/owners", body)
+        .remove_named_owner("foo", "github:unknown:unknown")
         .await;
     assert_eq!(response.status(), StatusCode::BAD_REQUEST);
     assert_snapshot!(response.text(), @r#"{"errors":[{"detail":"could not find team with login `github:unknown:unknown`"}]}"#);
diff --git a/src/tests/util.rs b/src/tests/util.rs
index 04e8f49c94d..47c464028de 100644
--- a/src/tests/util.rs
+++ b/src/tests/util.rs
@@ -22,7 +22,7 @@
 use crate::middleware::session;
 use crate::models::{ApiToken, CreatedApiToken, User};
 use crate::tests::{
-    CategoryListResponse, CategoryResponse, CrateList, CrateResponse, GoodCrate, OkBool,
+    CategoryListResponse, CategoryResponse, CrateList, CrateResponse, GoodCrate, OwnerResp,
     OwnersResponse, VersionResponse,
 };
 
@@ -221,6 +221,33 @@ pub trait RequestHelper {
         let url = "/api/v1/categories";
         self.get(url).await.good()
     }
+
+    /// Add to the specified crate the specified owners.
+    async fn add_named_owners<T>(&self, krate_name: &str, owners: &[T]) -> Response<OwnerResp>
+    where
+        T: serde::Serialize,
+    {
+        let url = format!("/api/v1/crates/{krate_name}/owners");
+        let body = json!({ "owners": owners }).to_string();
+        self.put(&url, body).await
+    }
+
+    /// Add a single owner to the specified crate.
+    async fn add_named_owner(&self, krate_name: &str, owner: &str) -> Response<OwnerResp> {
+        self.add_named_owners(krate_name, &[owner]).await
+    }
+
+    /// Remove from the specified crate the specified owners.
+    async fn remove_named_owners(&self, krate_name: &str, owners: &[&str]) -> Response<OwnerResp> {
+        let url = format!("/api/v1/crates/{krate_name}/owners");
+        let body = json!({ "owners": owners }).to_string();
+        self.delete_with_body(&url, body).await
+    }
+
+    /// Remove a single owner to the specified crate.
+    async fn remove_named_owner(&self, krate_name: &str, owner: &str) -> Response<OwnerResp> {
+        self.remove_named_owners(krate_name, &[owner]).await
+    }
 }
 
 fn req(method: Method, path: &str) -> MockRequest {
@@ -345,31 +372,4 @@ impl MockTokenUser {
     pub fn plaintext(&self) -> &PlainToken {
         &self.token.plaintext
     }
-
-    /// Add to the specified crate the specified owners.
-    pub async fn add_named_owners<T>(&self, krate_name: &str, owners: &[T]) -> Response<OkBool>
-    where
-        T: serde::Serialize,
-    {
-        let url = format!("/api/v1/crates/{krate_name}/owners");
-        let body = json!({ "owners": owners }).to_string();
-        self.put(&url, body).await
-    }
-
-    /// Add a single owner to the specified crate.
-    pub async fn add_named_owner(&self, krate_name: &str, owner: &str) -> Response<OkBool> {
-        self.add_named_owners(krate_name, &[owner]).await
-    }
-
-    /// Remove from the specified crate the specified owners.
-    pub async fn remove_named_owners(&self, krate_name: &str, owners: &[&str]) -> Response<OkBool> {
-        let url = format!("/api/v1/crates/{krate_name}/owners");
-        let body = json!({ "owners": owners }).to_string();
-        self.delete_with_body(&url, body).await
-    }
-
-    /// Remove a single owner to the specified crate.
-    pub async fn remove_named_owner(&self, krate_name: &str, owner: &str) -> Response<OkBool> {
-        self.remove_named_owners(krate_name, &[owner]).await
-    }
 }