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<main>
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<h1 id="examples"><a class="header" href="#examples">Examples</a></h1>
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<p>Concrete scenario shapes that illustrate how to combine topologies, workloads,
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and expectations.</p>
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<p><strong>View Complete Source Code:</strong></p>
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<ul>
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<li><a href="https://github.com/logos-blockchain/logos-blockchain-testing/blob/master/examples/src/bin/local_runner.rs">local_runner.rs</a> — Host processes (local)</li>
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<li><a href="https://github.com/logos-blockchain/logos-blockchain-testing/blob/master/examples/src/bin/compose_runner.rs">compose_runner.rs</a> — Docker Compose</li>
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<li><a href="https://github.com/logos-blockchain/logos-blockchain-testing/blob/master/examples/src/bin/k8s_runner.rs">k8s_runner.rs</a> — Kubernetes</li>
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</ul>
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<p><strong>Runnable examples:</strong> The repo includes complete binaries in <code>examples/src/bin/</code>:</p>
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<ul>
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<li><code>local_runner.rs</code> — Host processes (local)</li>
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<li><code>compose_runner.rs</code> — Docker Compose (requires image built)</li>
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<li><code>k8s_runner.rs</code> — Kubernetes (requires cluster access and image loaded)</li>
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</ul>
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<p><strong>Recommended:</strong> Use <code>scripts/run/run-examples.sh -t <duration> -v <validators> -e <executors> <mode></code> where mode is <code>host</code>, <code>compose</code>, or <code>k8s</code>.</p>
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<p><strong>Alternative:</strong> Direct cargo run: <code>POL_PROOF_DEV_MODE=true cargo run -p runner-examples --bin <name></code></p>
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<p><strong>All runners require <code>POL_PROOF_DEV_MODE=true</code></strong> to avoid expensive proof generation.</p>
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<p><strong>Code patterns</strong> below show how to build scenarios. Wrap these in <code>#[tokio::test]</code> functions for integration tests, or <code>#[tokio::main]</code> for binaries.</p>
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<h2 id="simple-consensus-liveness"><a class="header" href="#simple-consensus-liveness">Simple consensus liveness</a></h2>
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<p>Minimal test that validates basic block production:</p>
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<pre><code class="language-rust ignore">use std::time::Duration;
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use anyhow::Result;
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use testing_framework_core::scenario::{Deployer, ScenarioBuilder};
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use testing_framework_runner_local::LocalDeployer;
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use testing_framework_workflows::ScenarioBuilderExt;
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pub async fn simple_consensus() -> Result<()> {
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let mut plan = ScenarioBuilder::topology_with(|t| t.network_star().validators(3).executors(0))
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.expect_consensus_liveness()
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.with_run_duration(Duration::from_secs(30))
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.build();
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let deployer = LocalDeployer::default();
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let runner = deployer.deploy(&plan).await?;
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let _handle = runner.run(&mut plan).await?;
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Ok(())
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}</code></pre>
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<p><strong>When to use</strong>: smoke tests for consensus on minimal hardware.</p>
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<h2 id="transaction-workload"><a class="header" href="#transaction-workload">Transaction workload</a></h2>
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<p>Test consensus under transaction load:</p>
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<pre><code class="language-rust ignore">use std::time::Duration;
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use anyhow::Result;
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use testing_framework_core::scenario::{Deployer, ScenarioBuilder};
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use testing_framework_runner_local::LocalDeployer;
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use testing_framework_workflows::ScenarioBuilderExt;
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pub async fn transaction_workload() -> Result<()> {
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let mut plan = ScenarioBuilder::topology_with(|t| t.network_star().validators(2).executors(0))
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.wallets(20)
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.transactions_with(|txs| txs.rate(5).users(10))
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.expect_consensus_liveness()
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.with_run_duration(Duration::from_secs(60))
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.build();
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let deployer = LocalDeployer::default();
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let runner = deployer.deploy(&plan).await?;
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let _handle = runner.run(&mut plan).await?;
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Ok(())
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}</code></pre>
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<p><strong>When to use</strong>: validate transaction submission and inclusion.</p>
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<h2 id="da--transaction-workload"><a class="header" href="#da--transaction-workload">DA + transaction workload</a></h2>
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<p>Combined test stressing both transaction and DA layers:</p>
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<pre><code class="language-rust ignore">use std::time::Duration;
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use anyhow::Result;
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use testing_framework_core::scenario::{Deployer, ScenarioBuilder};
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use testing_framework_runner_local::LocalDeployer;
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use testing_framework_workflows::ScenarioBuilderExt;
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pub async fn da_and_transactions() -> Result<()> {
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let mut plan = ScenarioBuilder::topology_with(|t| t.network_star().validators(3).executors(2))
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.wallets(30)
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.transactions_with(|txs| txs.rate(5).users(15))
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.da_with(|da| da.channel_rate(2).blob_rate(2))
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.expect_consensus_liveness()
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.with_run_duration(Duration::from_secs(90))
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.build();
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let deployer = LocalDeployer::default();
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let runner = deployer.deploy(&plan).await?;
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let _handle = runner.run(&mut plan).await?;
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Ok(())
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}</code></pre>
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<p><strong>When to use</strong>: end-to-end coverage of transaction and DA layers.</p>
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<h2 id="chaos-resilience"><a class="header" href="#chaos-resilience">Chaos resilience</a></h2>
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<p>Test system resilience under node restarts:</p>
|
||
|
|
<pre><code class="language-rust ignore">use std::time::Duration;
|
||
|
|
|
||
|
|
use anyhow::Result;
|
||
|
|
use testing_framework_core::scenario::{Deployer, ScenarioBuilder};
|
||
|
|
use testing_framework_runner_compose::ComposeDeployer;
|
||
|
|
use testing_framework_workflows::{ChaosBuilderExt, ScenarioBuilderExt};
|
||
|
|
|
||
|
|
pub async fn chaos_resilience() -> Result<()> {
|
||
|
|
let mut plan = ScenarioBuilder::topology_with(|t| t.network_star().validators(4).executors(2))
|
||
|
|
.enable_node_control()
|
||
|
|
.wallets(20)
|
||
|
|
.transactions_with(|txs| txs.rate(3).users(10))
|
||
|
|
.chaos_with(|c| {
|
||
|
|
c.restart()
|
||
|
|
.min_delay(Duration::from_secs(20))
|
||
|
|
.max_delay(Duration::from_secs(40))
|
||
|
|
.target_cooldown(Duration::from_secs(30))
|
||
|
|
.apply()
|
||
|
|
})
|
||
|
|
.expect_consensus_liveness()
|
||
|
|
.with_run_duration(Duration::from_secs(120))
|
||
|
|
.build();
|
||
|
|
|
||
|
|
let deployer = ComposeDeployer::default();
|
||
|
|
let runner = deployer.deploy(&plan).await?;
|
||
|
|
let _handle = runner.run(&mut plan).await?;
|
||
|
|
|
||
|
|
Ok(())
|
||
|
|
}</code></pre>
|
||
|
|
<p><strong>When to use</strong>: resilience validation and operational readiness drills.</p>
|
||
|
|
<p><strong>Note</strong>: Chaos tests require <code>ComposeDeployer</code> or another runner with node control support.</p>
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