diff --git a/Cargo.toml b/Cargo.toml
index 2086689..974af93 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -14,4 +14,7 @@ serde_json = "1.0"
 serde = { version = "1.0", features = ["derive"] }
 dirs = "4.0.0"
 anyhow = "1.0.62"
-enigo = "0.0.14"
\ No newline at end of file
+enigo = "0.0.14"
+
+[dev-dependencies]
+assert_cmd = "2.0.12"
\ No newline at end of file
diff --git a/src/main.rs b/src/main.rs
index 2e6cf7f..1af57eb 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -7,3 +7,35 @@ mod keyboard;
 fn main() {
     cli::parse();
 }
+
+#[cfg(test)]
+mod tests {
+    use assert_cmd::Command;
+
+    #[test]
+    fn main() {
+    let mut cmd = Command::cargo_bin("ka").unwrap();
+    cmd.arg("-h");
+    cmd.assert().success();
+    let expected_output = format!(
+        r###"Keep you machine awake
+
+USAGE:
+    ka [SUBCOMMAND]
+
+OPTIONS:
+    -h, --help       Print help information
+    -V, --version    Print version information
+
+SUBCOMMANDS:
+    help           Print this message or the help of the given subcommand(s)
+    keyboard       Use keyboard to keep your machine awake [default tab & windows/super/command]
+    mouse          Use mouse to keep your machine awake
+    programname    Set name for this program
+"###
+    );
+    let actual_output = String::from_utf8(cmd.assert().get_output().to_owned().stdout).unwrap();
+    assert!(actual_output.contains(&expected_output));
+    }
+
+}
\ No newline at end of file