diff --git a/tests/verify-api.rs b/tests/verify-api.rs
new file mode 100644
index 00000000..74e1179f
--- /dev/null
+++ b/tests/verify-api.rs
@@ -0,0 +1,145 @@
+use failure::*;
+
+use proxmox_backup::api2;
+use proxmox::api::*;
+use proxmox::api::schema::*;
+use proxmox::api::router::*;
+
+// Simply test if api lookup tables inside Routers and Schemas are
+// correctly sorted.
+
+fn verify_object_schema(schema: &ObjectSchema) -> Result<(), Error> {
+
+    let map = schema.properties;
+
+    if map.len() >= 1 {
+
+        for i in 1..map.len() {
+
+            if map[i].0 <= map[i-1].0 {
+                for (name, _, _) in map.iter() {
+                    eprintln!("{}", name);
+                }
+                bail!("found unsorted property map ({} <= {})", map[i].0, map[i-1].0);
+            }
+        }
+    }
+
+    for (_name, _, sub_schema) in map.iter() {
+        verify_schema(sub_schema)?;
+    }
+
+    Ok(())
+}
+
+fn verify_schema(schema: &Schema) -> Result<(), Error> {
+    match schema {
+        Schema::Object(obj_schema) => {
+            verify_object_schema(obj_schema)?;
+        }
+        Schema::Array(arr_schema) => {
+            verify_schema(arr_schema.items)?;
+        }
+        _ => {}
+    }
+    Ok(())
+}
+fn verify_api_method(
+    method: &str,
+    path: &str,
+    info: &ApiMethod
+) -> Result<(), Error>
+{
+    verify_object_schema(info.parameters)
+        .map_err(|err| format_err!("{} {} parameters: {}", method, path, err))?;
+
+    verify_schema(info.returns)
+        .map_err(|err| format_err!("{} {} returns: {}", method, path, err))?;
+
+    Ok(())
+}
+
+fn verify_dirmap(
+    path: &str,
+    dirmap: SubdirMap,
+) -> Result<(), Error> {
+
+    if dirmap.len() >= 1 {
+
+        for i in 1..dirmap.len() {
+
+            if dirmap[i].0 <= dirmap[i-1].0 {
+                for (name, _) in dirmap.iter() {
+                    eprintln!("{}/{}", path, name);
+                }
+                bail!("found unsorted dirmap at {:?} ({} <= {})", path, dirmap[i].0, dirmap[i-1].0);
+            }
+
+        }
+    }
+
+    for (name, router) in dirmap.iter() {
+        let sub_path = format!("{}/{}", path, name);
+        verify_router(&sub_path, router)?;
+    }
+
+    Ok(())
+}
+
+fn verify_router(path: &str, router: &Router) -> Result<(), Error> {
+
+    println!("Verify {}", path);
+
+    if let Some(api_method) = router.get {
+        verify_api_method("GET", path, api_method)?;
+    }
+    if let Some(api_method) = router.put {
+        verify_api_method("PUT", path, api_method)?;
+    }
+    if let Some(api_method) = router.post {
+        verify_api_method("POST", path, api_method)?;
+    }
+    if let Some(api_method) = router.delete {
+        verify_api_method("DELETE", path, api_method)?;
+    }
+
+    match router.subroute {
+        Some(SubRoute::Map(dirmap)) => {
+            verify_dirmap(path, dirmap)?;
+        }
+        Some(SubRoute::MatchAll { router, param_name }) => {
+            let path = format!("{}/{{{}}}", path, param_name);
+            verify_router(&path, router)?;
+        }
+        None => {}
+    }
+
+    Ok(())
+}
+
+#[test]
+fn verify_backup_api() -> Result<(), Error> {
+
+    let api = &api2::backup::BACKUP_API_ROUTER;
+    verify_router("backup-api", api)?;
+
+    Ok(())
+}
+
+#[test]
+fn verify_reader_api() -> Result<(), Error> {
+
+    let api = &api2::reader::READER_API_ROUTER;
+    verify_router("reader-api", api)?;
+
+    Ok(())
+}
+
+#[test]
+fn verify_root_api() -> Result<(), Error> {
+
+    let api = &api2::ROUTER;
+    verify_router("root", api)?;
+
+    Ok(())
+}