Add a test for the clap args.

See: clap-rs/clap#6174 (comment)

Author: lgarron

Makefile

@@ -12,9 +12,13 @@ format:
 	cargo clippy
 	cargo fmt
 
-.PHONY: test
+.PHONY: cargo-test test
 test: test-behaviour lint check-readme-cli-help
 
+.PHONY: cargo-test
+cargo-test:
+	cargo test
+
 .PHONY: test-behaviour
 test-behaviour:
 	./test/test-behaviour.sh

src/args.rs

@@ -329,3 +329,16 @@ fn current_macOS_version() -> String {
 
     stdout.to_owned()
 }
+
+#[cfg(test)]
+mod tests {
+    use crate::args::FolderifyArgs;
+
+    // https://docs.rs/clap/latest/clap/_derive/_tutorial/index.html#testing
+    #[test]
+    fn test_clap_args() {
+        use clap::CommandFactory;
+
+        FolderifyArgs::command().debug_assert();
+    }
+}