move admin tests into unit; fix

Signed-off-by: Jason Volk <jason@zemos.net>

src/admin/tests.rs

@@ -0,0 +1,26 @@
+#![cfg(test)]
+
+#[test]
+fn get_help_short() { get_help_inner("-h"); }
+
+#[test]
+fn get_help_long() { get_help_inner("--help"); }
+
+#[test]
+fn get_help_subcommand() { get_help_inner("help"); }
+
+fn get_help_inner(input: &str) {
+	use clap::Parser;
+
+	use crate::handler::AdminCommand;
+
+	let Err(error) = AdminCommand::try_parse_from(["argv[0] doesn't matter", input]) else {
+		panic!("no error!");
+	};
+
+	let error = error.to_string();
+	// Search for a handful of keywords that suggest the help printed properly
+	assert!(error.contains("Usage:"));
+	assert!(error.contains("Commands:"));
+	assert!(error.contains("Options:"));
+}