From cd3cb82192568ae3b83747e7398bbc8c1a4b78e8 Mon Sep 17 00:00:00 2001
From: Eryn Wells <eryn@erynwells.me>
Date: Sun, 28 Jan 2024 15:47:32 -0800
Subject: [PATCH] Add an assert_move_list! macro to help with verifying move
 lists

---
 position/src/lib.rs   |  4 ++++
 position/src/tests.rs | 19 +++++++++++++++++++
 2 files changed, 23 insertions(+)
 create mode 100644 position/src/tests.rs

diff --git a/position/src/lib.rs b/position/src/lib.rs
index 015b10b..9c58540 100644
--- a/position/src/lib.rs
+++ b/position/src/lib.rs
@@ -11,5 +11,9 @@ mod sight;
 #[macro_use]
 mod macros;
 
+#[cfg(test)]
+#[macro_use]
+mod tests;
+
 pub use position::{MoveBuilder as MakeMoveBuilder, Position, PositionBuilder};
 pub use r#move::{Castle, MakeMoveError, Move, MoveBuilder};
diff --git a/position/src/tests.rs b/position/src/tests.rs
new file mode 100644
index 0000000..8663afa
--- /dev/null
+++ b/position/src/tests.rs
@@ -0,0 +1,19 @@
+// Eryn Wells <eryn@erynwells.me>
+
+#[macro_export]
+macro_rules! assert_move_list {
+    ($generated:expr, $expected:expr, $position:expr) => {
+        assert_eq!(
+            $generated,
+            $expected,
+            "Difference: {:?}",
+            $generated
+                .symmetric_difference(&$expected)
+                .map(|mv| format!(
+                    "{}",
+                    $crate::r#move::AlgebraicMoveFormatter::new(mv, &$position)
+                ))
+                .collect::<Vec<String>>()
+        )
+    };
+}