diff --git a/moves/src/lib.rs b/moves/src/lib.rs
index 75e26ce..297f82e 100644
--- a/moves/src/lib.rs
+++ b/moves/src/lib.rs
@@ -1,12 +1,14 @@
 // Eryn Wells <eryn@erynwells.me>
 
+pub mod testing;
+
 mod builder;
 mod castle;
 mod defs;
 mod en_passant;
 mod moves;
 
-pub use builder::{Builder, Error as BuilderError};
+pub use builder::{Builder, Error as BuildMoveError, Result as BuildMoveResult};
 pub use castle::Castle;
 pub use defs::PromotionShape;
 pub use en_passant::EnPassant;
diff --git a/moves/src/testing.rs b/moves/src/testing.rs
new file mode 100644
index 0000000..b298d5d
--- /dev/null
+++ b/moves/src/testing.rs
@@ -0,0 +1,17 @@
+// Eryn Wells <eryn@erynwells.me>
+
+use crate::BuildMoveError;
+
+pub type TestResult = Result<(), TestError>;
+
+#[derive(Debug, Eq, PartialEq)]
+pub enum TestError {
+    BuildMove(BuildMoveError),
+    NoLegalMoves,
+}
+
+impl From<BuildMoveError> for TestError {
+    fn from(value: BuildMoveError) -> Self {
+        TestError::BuildMove(value)
+    }
+}
diff --git a/moves/tests/flags.rs b/moves/tests/flags.rs
index 2e56389..cdcdd57 100644
--- a/moves/tests/flags.rs
+++ b/moves/tests/flags.rs
@@ -1,7 +1,7 @@
 // Eryn Wells <eryn@erynwells.me>
 
 use chessfriend_core::{piece, Color, File, Shape, Square};
-use chessfriend_moves::{Builder, BuilderError, Castle, PromotionShape};
+use chessfriend_moves::{testing::*, Builder, Castle, PromotionShape};
 
 macro_rules! assert_flag {
     ($move:expr, $left:expr, $right:expr, $desc:expr) => {
@@ -26,7 +26,7 @@ macro_rules! assert_flags {
 }
 
 #[test]
-fn move_flags_quiet() -> Result<(), BuilderError> {
+fn move_flags_quiet() -> TestResult {
     let mv = Builder::push(&piece!(White Pawn on A4))
         .to(Square::A5)
         .build()?;
@@ -36,7 +36,7 @@ fn move_flags_quiet() -> Result<(), BuilderError> {
 }
 
 #[test]
-fn move_flags_double_push() -> Result<(), BuilderError> {
+fn move_flags_double_push() -> TestResult {
     let mv = Builder::double_push(File::C, Color::White).build()?;
     assert_flags!(mv, false, true, false, false, false, false);
 
@@ -44,7 +44,7 @@ fn move_flags_double_push() -> Result<(), BuilderError> {
 }
 
 #[test]
-fn move_flags_capture() -> Result<(), BuilderError> {
+fn move_flags_capture() -> TestResult {
     let mv = Builder::new()
         .from(Square::A4)
         .capturing_on(Square::B5)
@@ -56,7 +56,7 @@ fn move_flags_capture() -> Result<(), BuilderError> {
 }
 
 #[test]
-fn move_flags_en_passant_capture() -> Result<(), BuilderError> {
+fn move_flags_en_passant_capture() -> TestResult {
     let mv = unsafe {
         Builder::new()
             .from(Square::A4)
@@ -73,7 +73,7 @@ fn move_flags_en_passant_capture() -> Result<(), BuilderError> {
 }
 
 #[test]
-fn move_flags_promotion() -> Result<(), BuilderError> {
+fn move_flags_promotion() -> TestResult {
     let mv = Builder::push(&piece!(White Pawn on H7))
         .to(Square::H8)
         .promoting_to(PromotionShape::Queen)
@@ -86,7 +86,7 @@ fn move_flags_promotion() -> Result<(), BuilderError> {
 }
 
 #[test]
-fn move_flags_capture_promotion() -> Result<(), BuilderError> {
+fn move_flags_capture_promotion() -> TestResult {
     let mv = Builder::push(&piece!(White Pawn on H7))
         .to(Square::H8)
         .capturing_piece(&piece!(Black Knight on G8))
@@ -100,7 +100,7 @@ fn move_flags_capture_promotion() -> Result<(), BuilderError> {
 }
 
 #[test]
-fn move_flags_castle() -> Result<(), BuilderError> {
+fn move_flags_castle() -> TestResult {
     let mv = Builder::castling(Castle::KingSide).build();
 
     assert_flags!(mv, false, false, false, false, true, false);
diff --git a/moves/tests/pushes.rs b/moves/tests/pushes.rs
index ad66152..7406eb0 100644
--- a/moves/tests/pushes.rs
+++ b/moves/tests/pushes.rs
@@ -1,10 +1,10 @@
 // Eryn Wells <eryn@erynwells.me>
 
 use chessfriend_core::{piece, Square};
-use chessfriend_moves::{Builder, BuilderError};
+use chessfriend_moves::{testing::*, Builder};
 
 #[test]
-fn pawn_push() -> Result<(), BuilderError> {
+fn pawn_push() -> TestResult {
     let mv = Builder::push(&piece!(White Pawn on A3))
         .to(Square::A4)
         .build()?;