test(complete): Register bash dynamic completions

clap_complete/tests/snapshots/home/dynamic/test/bash/.bashrc

@@ -0,0 +1,22 @@
+PS1='% '
+. /etc/bash_completion
+
+_clap_complete_test() {
+    export _CLAP_COMPLETE_INDEX=${COMP_CWORD}
+    export _CLAP_COMPLETE_COMP_TYPE=${COMP_TYPE}
+    if compopt +o nospace 2> /dev/null; then
+        export _CLAP_COMPLETE_SPACE=false
+    else
+        export _CLAP_COMPLETE_SPACE=true
+    fi
+    export _CLAP_COMPLETE_IFS=$'\013'
+    COMPREPLY=( $("test" complete --shell bash -- "${COMP_WORDS[@]}") )
+    if [[ $? != 0 ]]; then
+        unset COMPREPLY
+    elif [[ $SUPPRESS_SPACE == 1 ]] && [[ "${COMPREPLY-}" =~ [=/:]$ ]]; then
+        compopt -o nospace
+    fi
+}
+complete -o nospace -o bashdefault -F _clap_complete_test test
+
+

clap_complete/tests/testsuite/bash.rs

@@ -161,3 +161,9 @@ fn complete() {
     let actual = runtime.complete(input, &term).unwrap();
     snapbox::assert_eq(expected, actual);
 }
+
+#[test]
+#[cfg(unix)]
+fn register_dynamic_completion() {
+    common::register_example("dynamic", "test", completest::Shell::Bash);
+}

clap_complete/tests/testsuite/common.rs

@@ -322,10 +322,17 @@ pub fn register_example(context: &str, name: &str, shell: completest::Shell) {
     println!("Compiled");
     let bin_root = bin_path.parent().unwrap().to_owned();
 
-    let registration = std::process::Command::new(&bin_path)
+    let mut registration = std::process::Command::new(&bin_path);
-        .arg(format!("--generate={shell_name}"))
+    match context {
-        .output()
+        "static" => registration.args([format!("--generate={shell_name}")]),
-        .unwrap();
+        "dynamic" => registration.args([
+            "complete".to_owned(),
+            "--register=-".to_owned(),
+            format!("--shell={shell_name}"),
+        ]),
+        _ => unreachable!("unsupported context {}", context),
+    };
+    let registration = registration.output().unwrap();
     assert!(
         registration.status.success(),
         "{}",