From 7247e5f9a1af38706a7c5d7204b9f2972ec927a7 Mon Sep 17 00:00:00 2001
From: Gabor Szabo <gabor@szabgab.com>
Date: Mon, 31 Mar 2025 11:39:38 +0300
Subject: [PATCH] test the command line without any parameters #1568

---
 tests/cli/test.rs | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/tests/cli/test.rs b/tests/cli/test.rs
index 63114d3a..56e0f159 100644
--- a/tests/cli/test.rs
+++ b/tests/cli/test.rs
@@ -32,3 +32,15 @@ fn mdbook_cli_detects_book_with_failing_tests() {
       .stderr(predicates::str::is_match(r##"returned an error:\n\n"##).unwrap())
       .stderr(predicates::str::is_match(r##"Nested_Chapter::Rustdoc_include_works_with_anchors_too \(line \d+\) ... FAILED"##).unwrap());
 }
+
+#[test]
+fn empty_cli() {
+    let mut cmd = mdbook_cmd();
+    cmd.assert()
+        .failure()
+        .code(2)
+        .stdout(predicates::str::is_empty())
+        .stderr(predicates::str::contains(
+            "Creates a book from markdown files",
+        ));
+}