diff --git a/src/tests/check.rs b/src/tests/check.rs
new file mode 100644
index 0000000..766e0e7
--- /dev/null
+++ b/src/tests/check.rs
@@ -0,0 +1,182 @@
+use super::*;
+use crate::{run, Command, Commands, FullCtx};
+use color_eyre::eyre::Result;
+use http::StatusCode;
+
+#[test]
+fn test_commands_log_flag() {
+    let commands = Commands {
+        log: true,
+        command: Command::Init,
+    };
+    assert!(commands.log);
+
+    let commands = Commands {
+        log: false,
+        command: Command::Init,
+    };
+    assert!(!commands.log);
+}
+
+#[test]
+fn test_command_variants() {
+    let init = Command::Init;
+    assert!(matches!(init, Command::Init));
+
+    let check = Command::Check;
+    assert!(matches!(check, Command::Check));
+
+    let import = Command::Import;
+    assert!(matches!(import, Command::Import));
+}
+
+#[test]
+fn test_ctx_creation() {
+    let path = std::path::PathBuf::from("test_path");
+    let ctx = Ctx::from(path.clone());
+
+    assert_eq!(ctx.fs.base(), &path);
+}
+
+#[tokio::test]
+async fn test_full_ctx_clients() -> Result<()> {
+    let fs = kxio::fs::temp()?;
+    let ctx = Ctx::from(fs.base().to_path_buf());
+    let file_name = fs.base().join("trello-to-deck.toml");
+    let file = fs.file(&file_name);
+    file.write(
+        [
+            "[trello]",
+            "api_key = 'foo'",
+            "api_secret = 'bar'",
+            "board_name = 'target'",
+            "[nextcloud]",
+            "hostname = 'http://localhost:8000'",
+            "username = 'bob'",
+            "password = '1 <3 alice!'",
+            "board_id = 23",
+        ]
+        .join("\n"),
+    )?;
+
+    let config = AppConfig::load(&ctx).expect("Failed to load config");
+
+    let full_ctx = FullCtx {
+        fs: ctx.fs,
+        net: ctx.net,
+        prt: ctx.prt,
+        cfg: config,
+    };
+
+    let _deck_client = full_ctx.deck_client();
+    let _trello_client = full_ctx.trello_client();
+
+    assert_peq!(
+        full_ctx.cfg,
+        AppConfig {
+            trello: TrelloConfig {
+                api_key: s!("foo").into(),
+                api_secret: s!("bar").into(),
+                board_name: s!("target").into(),
+            },
+            nextcloud: NextcloudConfig {
+                hostname: s!("http://localhost:8000").into(),
+                username: s!("bob").into(),
+                password: s!("1 <3 alice!").into(),
+                board_id: 23.into(),
+            }
+        }
+    );
+
+    Ok(())
+}
+
+#[tokio::test]
+async fn test_run() -> Result<()> {
+    //given
+    let fs = kxio::fs::temp()?;
+    let _temp_fs = fs.clone();
+    let file_name = fs.base().join("trello-to-deck.toml");
+    let file = fs.file(&file_name);
+    file.write(
+        [
+            "[trello]",
+            "api_key = 'foo'",
+            "api_secret = 'bar'",
+            "board_name = 'DevProjects'",
+            "[nextcloud]",
+            "hostname = 'http://localhost:8000'",
+            "username = 'bob'",
+            "password = '1 <3 alice!'",
+            "board_id = 1",
+        ]
+        .join("\n"),
+    )?;
+
+    let mock_net = kxio::net::mock();
+    mock_net
+        .on()
+        .get("https://api.trello.com/1/members/me/boards?lists=open")
+        .respond(StatusCode::OK)
+        .body(include_bytes!("responses/trello-member-get.json").as_slice())
+        .expect("trello member get");
+    mock_net
+        .on()
+        .get("http://localhost:8000/index.php/apps/deck/api/v1.0/boards")
+        .respond(StatusCode::OK)
+        .body(include_bytes!("responses/nextcloud-deck-get.json").as_slice())
+        .expect("nextcloud deck get");
+    mock_net
+        .on()
+        .get("http://localhost:8000/index.php/apps/deck/api/v1.0/boards/1/stacks")
+        .respond(StatusCode::OK)
+        .body(include_bytes!("responses/nextcloud-board-get.json").as_slice())
+        .expect("nextcloud board get");
+
+    let ctx = Ctx {
+        fs: fs.as_real(),
+        net: mock_net.into(),
+        prt: kxio::print::test(),
+    };
+
+    let prt = ctx.prt.clone();
+    let prt = prt.as_test().unwrap();
+
+    let commands = Commands {
+        log: false,
+        command: Command::Check,
+    };
+
+    //when
+    run(&ctx, &commands).await?;
+
+    //then
+    let output = prt.output();
+    assert_peq!(
+        output.trim(),
+        [
+            ">> Testing Trello details...",
+            "<<< Trello Credentials: OKAY",
+            ">> Trello Board: DevProjects",
+            "<<< Trello Board: OKAY",
+            "<<<< List: BRAINSTORM 🤔",
+            "<<<< List: TODO 📚",
+            "<<<< List: DOING ⚙️",
+            "<<<< List: DONE! 🙌🏽",
+            "<<<< List: Icebox ❄️",
+            ">> Testing Nextcloud details...",
+            "<<< Nextcloud Boards",
+            "<<<< Board: Personal Board",
+            "<<<< Board: 4 Published: Cossmass Infinities",
+            "<<<< Board: Fulfilment: Cossmass Infinities",
+            "<<< Nextcloud Credentials: OKAY",
+            "<<< Nextcloud Board: Personal Board",
+            "<<<< Stack: Done",
+            "<<<< Stack: Doing",
+            "<<<< Stack: To do",
+        ]
+        .join("\n")
+    );
+
+    Ok(())
+}
diff --git a/src/tests/mod.rs b/src/tests/mod.rs
index 81ae75d..1bc9586 100644
--- a/src/tests/mod.rs
+++ b/src/tests/mod.rs
@@ -9,6 +9,7 @@ use pretty_assertions::assert_eq as assert_peq;
 use crate::{config::AppConfig, f, nextcloud::NextcloudConfig, s, trello::TrelloConfig, Ctx, NAME};
 
 mod api_result;
+mod check;
 mod config;
 pub(crate) mod given;
 mod init;