feat: add test of runtime used

Makefile

@@ -1,3 +1,3 @@
 .PHONY: test
 test:
-	cargo test
+	cargo test -- --nocapture

README.md

@@ -0,0 +1,51 @@
+# testcontainers-cloud-rs-example
+
+This is an example repository with a simple test confirming proper connection from Testcontainers Desktop (or the CI agent) to your [Testcontainers Cloud](https://app.testcontainers.cloud) account.
+
+For details on how to bootstrap Testcontainers in an actual project, please refer to the [Testcontainers Rust Quickstart](https://rust.testcontainers.org/quickstart/testcontainers).
+
+## Clone the repository and run the first Testcontainers test suite
+
+```shell
+git clone https://github.com/AtomicJar/testcontainers-cloud-rs-example.git
+cd testcontainers-cloud-rs-example
+make test
+```
+
+The `Make` command will run the test suite using `cargo test -- --nocapture`.
+
+Note that it's important to add the `--nocapture` flag, otherwise the output of the tests will be suppressed.
+
+## Confirm your environment is configured correctly
+
+The test output should show the Testcontainers logo and which container runtime was used:  
+
+```shell
+running 2 tests
+        ████████╗███████╗███████╗████████╗ ██████╗ ██████╗ ███╗   ██╗████████╗ █████╗ ██╗███╗   ██╗███████╗██████╗ ███████╗ 
+        ╚══██╔══╝██╔════╝██╔════╝╚══██╔══╝██╔════╝██╔═══██╗████╗  ██║╚══██╔══╝██╔══██╗██║████╗  ██║██╔════╝██╔══██╗██╔════╝ 
+           ██║   █████╗  ███████╗   ██║   ██║     ██║   ██║██╔██╗ ██║   ██║   ███████║██║██╔██╗ ██║█████╗  ██████╔╝███████╗ 
+           ██║   ██╔══╝  ╚════██║   ██║   ██║     ██║   ██║██║╚██╗██║   ██║   ██╔══██║██║██║╚██╗██║██╔══╝  ██╔══██╗╚════██║ 
+           ██║   ███████╗███████║   ██║   ╚██████╗╚██████╔╝██║ ╚████║   ██║   ██║  ██║██║██║ ╚████║███████╗██║  ██║███████║ 
+           ╚═╝   ╚══════╝╚══════╝   ╚═╝    ╚═════╝ ╚═════╝ ╚═╝  ╚═══╝   ╚═╝   ╚═╝  ╚═╝╚═╝╚═╝  ╚═══╝╚══════╝╚═╝  ╚═╝╚══════╝
+
+  Congratulations on running your first test! 🎉
+  Runtime used:
+      Testcontainers Cloud via Testcontainers Desktop app
+
+  You can now return to the website to complete your onboarding.
+
+test testcontainers_cloud_docker_engine ... ok
+test create_postgres_client ... ok
+
+test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.04s
+```
+
+## (optional) Use Testcontainers Desktop to easily debug the database
+
+[Testcontainers Desktop](https://testcontainers.com/desktop/) helps developers with common tasks such as debugging your Testcontainers-powered dependencies. Let's practice!
+
+The tests in this project create a PostgreSQL database and populate it with sample data. You can [set a fixed port](https://newsletter.testcontainers.com/announcements/set-fixed-ports-to-easily-debug-development-services) for the `postgres` service, then [freeze containers shutdown](https://newsletter.testcontainers.com/announcements/freeze-containers-to-prevent-their-shutdown-while-you-debug) to easily connect to the database from your IDE after your tests run.
+
+See if you can inspect the database. Username: `postgres`. Password: `postgres`.
+

tests/cloud_first_test.rs

@@ -1,9 +1,43 @@
+use std::fmt::Display;
+
 use sqlx::Connection;
 use testcontainers_modules::{
     postgres::Postgres,
-    testcontainers::{runners::AsyncRunner, ImageExt},
+    testcontainers::{core::client::docker_client_instance, runners::AsyncRunner, ImageExt},
 };
 
+#[tokio::test]
+async fn testcontainers_cloud_docker_engine() -> Result<(), Box<dyn std::error::Error + 'static>> {
+    let client = docker_client_instance().await?;
+    let info = client.info().await?;
+
+    let contains_cloud =
+        matches!(info.server_version.as_ref(), Some(v) if v.contains("testcontainerscloud"));
+    let contains_desktop =
+        matches!(info.server_version.as_ref(), Some(v) if v.contains("Testcontainers Desktop"));
+
+    if !(contains_cloud || contains_desktop) {
+        Err(TestcontainersDesktopNotFound)?
+    }
+
+    let runtime = Some("Testcontainers Cloud")
+        .filter(|_| contains_cloud)
+        .or(info.operating_system.as_deref())
+        .unwrap_or("unknown");
+    let runtime = if contains_desktop {
+        format!("{runtime} via Testcontainers Desktop app")
+    } else {
+        runtime.to_string()
+    };
+
+    println!(
+        include_str!("./pretty_strings/tcc-congratulations.tmpl"),
+        runtime = runtime
+    );
+
+    Ok(())
+}
+
 #[tokio::test]
 // This test uses `AsyncRunner``, but the same is applicable for `SyncRunner`
 // Also, it uses `GenericImage` from `testcontainers` for a whole picture, but you can use community modules from [`https://github.com/testcontainers/testcontainers-rs-modules-community`] instead
@@ -30,3 +64,14 @@ async fn create_postgres_client() -> Result<(), Box<dyn std::error::Error + 'sta
     assert_eq!(count, 7, "unexpected number of guides");
     Ok(())
 }
+
+#[derive(Debug)]
+struct TestcontainersDesktopNotFound;
+
+impl std::error::Error for TestcontainersDesktopNotFound {}
+
+impl Display for TestcontainersDesktopNotFound {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        write!(f, include_str!("./pretty_strings/tc-desktop-not-found.txt"))
+    }
+}

tests/pretty_strings/tc-desktop-not-found.txt

@@ -0,0 +1,9 @@
+
+	 ██████╗ ██╗  ██╗    ███╗   ██╗ ██████╗               ██╗
+	██╔═══██╗██║  ██║    ████╗  ██║██╔═══██╗    ██╗      ██╔╝
+	██║   ██║███████║    ██╔██╗ ██║██║   ██║    ╚═╝█████╗██║ 
+	██║   ██║██╔══██║    ██║╚██╗██║██║   ██║    ██╗╚════╝██║ 
+	╚██████╔╝██║  ██║    ██║ ╚████║╚██████╔╝    ╚═╝      ╚██╗
+	 ╚═════╝ ╚═╝  ╚═╝    ╚═╝  ╚═══╝ ╚═════╝               ╚═╝
+
+  It seems you are not running Testcontainers Desktop nor the CI agent. Have you started it?

tests/pretty_strings/tcc-congratulations.tmpl

@@ -0,0 +1,12 @@
+	████████╗███████╗███████╗████████╗ ██████╗ ██████╗ ███╗   ██╗████████╗ █████╗ ██╗███╗   ██╗███████╗██████╗ ███████╗ 
+	╚══██╔══╝██╔════╝██╔════╝╚══██╔══╝██╔════╝██╔═══██╗████╗  ██║╚══██╔══╝██╔══██╗██║████╗  ██║██╔════╝██╔══██╗██╔════╝ 
+	   ██║   █████╗  ███████╗   ██║   ██║     ██║   ██║██╔██╗ ██║   ██║   ███████║██║██╔██╗ ██║█████╗  ██████╔╝███████╗ 
+	   ██║   ██╔══╝  ╚════██║   ██║   ██║     ██║   ██║██║╚██╗██║   ██║   ██╔══██║██║██║╚██╗██║██╔══╝  ██╔══██╗╚════██║ 
+	   ██║   ███████╗███████║   ██║   ╚██████╗╚██████╔╝██║ ╚████║   ██║   ██║  ██║██║██║ ╚████║███████╗██║  ██║███████║ 
+	   ╚═╝   ╚══════╝╚══════╝   ╚═╝    ╚═════╝ ╚═════╝ ╚═╝  ╚═══╝   ╚═╝   ╚═╝  ╚═╝╚═╝╚═╝  ╚═══╝╚══════╝╚═╝  ╚═╝╚══════╝
+
+  Congratulations on running your first test! 🎉
+  Runtime used:
+      {runtime}
+
+  You can now return to the website to complete your onboarding.