From 82000d917f11d3e8424c7da6f4fabef419c4e5ba Mon Sep 17 00:00:00 2001
From: Eric Huss <eric@huss.org>
Date: Mon, 21 Apr 2025 19:44:23 -0700
Subject: [PATCH] Migrate alternate_backend_with_arguments to BookTest

---
 tests/alternative_backends.rs                 |  7 -----
 tests/testsuite/renderer.rs                   | 31 +++++++++++++++++++
 .../renderer_with_arguments/book.toml         |  3 ++
 .../renderer_with_arguments/src/SUMMARY.md    |  0
 4 files changed, 34 insertions(+), 7 deletions(-)
 create mode 100644 tests/testsuite/renderer/renderer_with_arguments/book.toml
 create mode 100644 tests/testsuite/renderer/renderer_with_arguments/src/SUMMARY.md

diff --git a/tests/alternative_backends.rs b/tests/alternative_backends.rs
index 85f0360d..f9080285 100644
--- a/tests/alternative_backends.rs
+++ b/tests/alternative_backends.rs
@@ -6,13 +6,6 @@ use std::fs;
 use std::path::Path;
 use tempfile::{Builder as TempFileBuilder, TempDir};
 
-#[test]
-fn alternate_backend_with_arguments() {
-    let (md, _temp) = dummy_book_with_backend("arguments", "echo Hello World!", false);
-
-    md.build().unwrap();
-}
-
 #[test]
 fn backends_receive_render_context_via_stdin() {
     use mdbook::renderer::RenderContext;
diff --git a/tests/testsuite/renderer.rs b/tests/testsuite/renderer.rs
index e53a920f..3d0dfe95 100644
--- a/tests/testsuite/renderer.rs
+++ b/tests/testsuite/renderer.rs
@@ -105,3 +105,34 @@ fn missing_optional_not_fatal() {
 "#]]);
     });
 }
+
+// Command can include arguments.
+#[test]
+fn renderer_with_arguments() {
+    BookTest::from_dir("renderer/renderer_with_arguments")
+        .rust_program(
+            "arguments",
+            r#"
+            fn main() {
+                let args: Vec<_> = std::env::args().skip(1).collect();
+                assert_eq!(args, &["arg1", "arg2"]);
+                println!("Hello World!");
+                use std::io::Read;
+                let mut s = String::new();
+                std::io::stdin().read_to_string(&mut s).unwrap();
+            }
+            "#,
+        )
+        .run("build", |cmd| {
+            cmd.expect_stdout(str![[r#"
+Hello World!
+
+"#]])
+                .expect_stderr(str![[r#"
+[TIMESTAMP] [INFO] (mdbook::book): Book building has started
+[TIMESTAMP] [INFO] (mdbook::book): Running the arguments backend
+[TIMESTAMP] [INFO] (mdbook::renderer): Invoking the "arguments" renderer
+
+"#]]);
+        });
+}
diff --git a/tests/testsuite/renderer/renderer_with_arguments/book.toml b/tests/testsuite/renderer/renderer_with_arguments/book.toml
new file mode 100644
index 00000000..7722c529
--- /dev/null
+++ b/tests/testsuite/renderer/renderer_with_arguments/book.toml
@@ -0,0 +1,3 @@
+[output.arguments]
+command = "./arguments arg1 arg2"
+
diff --git a/tests/testsuite/renderer/renderer_with_arguments/src/SUMMARY.md b/tests/testsuite/renderer/renderer_with_arguments/src/SUMMARY.md
new file mode 100644
index 00000000..e69de29b