nats-counters 0.1.0

NATS JetStream counters API
Documentation 
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// Copyright 2025 Synadia Communications Inc.
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

//! Common test utilities for counter tests.

use async_nats::jetstream;
use nats_server::Server;

/// Starts an embedded NATS server with JetStream enabled.
pub fn start_jetstream_server() -> Server {
    nats_server::run_server("tests/configs/jetstream.conf")
}

/// Creates a JetStream context from a client.
pub async fn create_jetstream_context(url: &str) -> jetstream::Context {
    let client = async_nats::connect(url)
        .await
        .expect("Failed to connect to NATS server");
    jetstream::new(client)
}

/// Creates a test stream configured for counters.
pub async fn create_counter_stream(
    js: &jetstream::Context,
    name: &str,
    subjects: Vec<String>,
) -> jetstream::stream::Stream {
    let config = jetstream::stream::Config {
        name: name.to_string(),
        subjects,
        allow_message_counter: true,
        allow_direct: true,
        ..Default::default()
    };

    js.create_stream(config)
        .await
        .expect("Failed to create counter stream")
}