1 files changed, 48 insertions, 0 deletions
diff --git a/src/tools/cargo/crates/mdman/tests/compare.rs b/src/tools/cargo/crates/mdman/tests/compare.rs
new file mode 100644
index 000000000..3e679d127
--- /dev/null
+++ b/src/tools/cargo/crates/mdman/tests/compare.rs
@@ -0,0 +1,48 @@
+//! Compares input to expected output.
+//!
+//! Use the MDMAN_BLESS environment variable to automatically update the
+//! expected output.
+
+use mdman::{Format, ManMap};
+use pretty_assertions::assert_eq;
+use std::path::PathBuf;
+use url::Url;
+
+fn run(name: &str) {
+    let input = PathBuf::from(format!("tests/compare/{}.md", name));
+    let url = Some(Url::parse("https://example.org/").unwrap());
+    let mut map = ManMap::new();
+    map.insert(
+        ("other-cmd".to_string(), 1),
+        "https://example.org/commands/other-cmd.html".to_string(),
+    );
+
+    for &format in &[Format::Man, Format::Md, Format::Text] {
+        let section = mdman::extract_section(&input).unwrap();
+        let result = mdman::convert(&input, format, url.clone(), map.clone()).unwrap();
+        let expected_path = format!(
+            "tests/compare/expected/{}.{}",
+            name,
+            format.extension(section)
+        );
+        if std::env::var("MDMAN_BLESS").is_ok() {
+            std::fs::write(&expected_path, result).unwrap();
+        } else {
+            let expected = std::fs::read_to_string(&expected_path).unwrap();
+            // Fix if Windows checked out with autocrlf.
+            let expected = expected.replace("\r\n", "\n");
+            assert_eq!(expected, result);
+        }
+    }
+}
+
+macro_rules! test( ($name:ident) => (
+    #[test]
+    fn $name() { run(stringify!($name)); }
+) );
+
+test!(formatting);
+test!(links);
+test!(options);
+test!(tables);
+test!(vars);