diff --git a/Cargo.toml b/Cargo.toml
index c082421..92d2ad6 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -2,6 +2,7 @@
 name = "rust-template-output"
 version = "0.1.0"
 edition = "2021"
+default-run = "rust-template-output"
 
 [features]
 test_feature_1 = []
diff --git a/build.rs b/build.rs
index 6fe9f5b..45a1acc 100644
--- a/build.rs
+++ b/build.rs
@@ -1,15 +1,14 @@
 use std::env;
 
-// use rustc_version::version_meta;
-// use rustc_version::Channel::Nightly;
+use rustc_version::version_meta;
+use rustc_version::Channel::Nightly;
 
 fn main() {
     println!("cargo:rerun-if-env-changed=CI");
 
-    // Uncomment this to be notified when we're building on Nightly toolset
-    // if version_meta().unwrap().channel <= Nightly {
-    //     println!("cargo:rustc-cfg=nightly_rustc");
-    // }
+    if version_meta().unwrap().channel <= Nightly {
+        println!("cargo:rustc-cfg=nightly_rustc");
+    }
 
     // On CI, do not run integration tests.
     if env::var("CI").is_ok() {
diff --git a/src/bin/bin_1.rs b/src/bin/bin_1.rs
new file mode 100644
index 0000000..a4679ee
--- /dev/null
+++ b/src/bin/bin_1.rs
@@ -0,0 +1,14 @@
+use rust_template_output::hello;
+
+fn main() {
+    println!("{} (from bin_1)", hello());
+}
+
+#[cfg(test)]
+mod tests {
+    #[test]
+    fn test_bin_1_one() {
+        let foo = "foo";
+        assert!(!foo.is_empty());
+    }
+}
diff --git a/src/lib.rs b/src/lib.rs
new file mode 100644
index 0000000..d827a4b
--- /dev/null
+++ b/src/lib.rs
@@ -0,0 +1,22 @@
+/// Returns hello string
+/// 
+/// ```
+/// use rust_template_output::hello;
+///
+/// let foo = hello();
+/// assert!(!foo.is_empty());
+/// ```
+pub fn hello() -> &'static str {
+    "Hello, World!"
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_lib_one() {
+        let foo = hello();
+        assert!(!foo.is_empty());
+    }
+}
diff --git a/src/main.rs b/src/main.rs
index e1bc5a8..e143364 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,5 +1,7 @@
+use rust_template_output::hello;
+
 fn main() {
-    println!("Hello, world!");
+    println!("{}", hello());
 
     if cfg!(feature = "test_feature_1") {
         println!("test-feature-1 is enabled");
@@ -7,3 +9,12 @@ fn main() {
         println!("test-feature-1 is disabled");
     }
 }
+
+#[cfg(test)]
+mod tests {
+    #[test]
+    fn test_main_one() {
+        let foo = "foo";
+        assert!(!foo.is_empty());
+    }
+}
diff --git a/tarpaulin.toml b/tarpaulin.toml
index 5b95ab2..f1afab6 100644
--- a/tarpaulin.toml
+++ b/tarpaulin.toml
@@ -2,6 +2,6 @@
 workspace = true
 all-features = true
 engine = "Llvm"
-exclude-files = [ "target*/*" ]
+exclude-files = [ "target*/*", "src/main.rs", "src/bin/*" ]
 run-types = [ "Tests" ]
 out = [ "Html", "Xml" ]
diff --git a/tests/integration_tests.rs b/tests/integration_tests.rs
new file mode 100644
index 0000000..6785ee8
--- /dev/null
+++ b/tests/integration_tests.rs
@@ -0,0 +1,7 @@
+use rust_template_output::hello;
+
+#[test]
+fn test_integration_one() {
+    let foo = hello();
+    assert!(!foo.is_empty());
+}