Check for bad command-line configuration (#581)

crates/api-desc/crates/update/src/main.rs

@@ -30,6 +30,11 @@ struct Flags {
     lang: Lang,
 }
 
+#[test]
+fn flags() {
+    <Flags as clap::CommandFactory>::command().debug_assert();
+}
+
 #[derive(Copy, Clone, ValueEnum)]
 pub enum Lang {
     C,

crates/api-desc/crates/update/test.sh

@@ -19,4 +19,4 @@ set -e
 
 test_helper
 
-cargo check --bin=update
+cargo test --bin=update

crates/cli/CHANGELOG.md

@@ -4,6 +4,7 @@
 
 ### Patch
 
+- Check for bad command-line configuration
 - Update dependencies
 - Restore release builds to the default
 

crates/cli/src/main.rs

@@ -36,6 +36,11 @@ struct Flags {
     action: Action,
 }
 
+#[test]
+fn flags() {
+    <Flags as clap::CommandFactory>::command().debug_assert();
+}
+
 #[derive(clap::Subcommand)]
 enum Action {
     /// Lists the applets installed on a platform.

crates/runner-host/src/main.rs

@@ -45,6 +45,11 @@ struct Flags {
     web_options: WebOptions,
 }
 
+#[test]
+fn flags() {
+    <Flags as clap::CommandFactory>::command().debug_assert();
+}
+
 #[derive(clap::Args)]
 struct WebOptions {
     /// Host to start the webserver.

crates/xtask/src/main.rs

@@ -39,6 +39,11 @@ struct Flags {
     command: MainCommand,
 }
 
+#[test]
+fn flags() {
+    <Flags as clap::CommandFactory>::command().debug_assert();
+}
+
 #[derive(clap::Args)]
 struct MainOptions {
     /// Compiles without debugging support.

scripts/sync.sh

@@ -36,7 +36,7 @@ for dir in $(find crates -name Cargo.toml -printf '%h\n' | sort); do
   add_lint $file allow clippy.unit-arg
   # add_lint $file warn rust.elided-lifetimes-in-paths
   # add_lint $file warn rust.missing-debug-implementations
-  # TODO: Use the same [ -e src/lib.rs -a "$(package_publish)" = true ] test is test-helper.
+  # TODO: Use the same [ -e src/lib.rs -a "$(package_publish)" = true ] test as in test-helper.
   case $crate in
     board|prelude) add_lint $file warn rust.missing-docs ;;
   esac