1 files changed, 49 insertions, 0 deletions
diff --git a/third_party/rust/rust_decimal/tests/macros.rs b/third_party/rust/rust_decimal/tests/macros.rs
new file mode 100644
index 0000000000..39cf0edf60
--- /dev/null
+++ b/third_party/rust/rust_decimal/tests/macros.rs
@@ -0,0 +1,49 @@
+#[macro_export]
+macro_rules! assert_approx_eq {
+    ($a:expr, $b:expr, $precision:expr) => {{
+        let (a, b) = (&$a, &$b);
+        let eps = Decimal::new(1, $precision);
+        let abs = (*a - *b).abs();
+        assert!(
+            abs <= eps,
+            "assertion failed: `(left ~= right)` \n   \
+             left: `{:?}`,\n  \
+             right: `{:?}`,\n \
+             expect: `{:?}`,\n   \
+             real: `{:?}`",
+            *a,
+            *b,
+            eps,
+            abs,
+        );
+    }};
+    ($a:expr, $b:expr, $precision:expr, $($arg:tt)+) => {{
+        let (a, b) = (&$a, &$b);
+        let eps = Decimal::new(1, $precision);
+        let abs = (*a - *b).abs();
+        assert!(
+            abs <= eps,
+            "assertion failed: `(left ~= right)` \n   \
+             left: `{:?}`,\n  \
+             right: `{:?}`,\n \
+             expect: `{:?}`,\n   \
+             real: `{:?}`: {}",
+            *a,
+            *b,
+            eps,
+            abs,
+            format_args!($($arg)+),
+        );
+    }};
+}
+
+#[macro_export]
+macro_rules! either {
+    ($result:expr, $legacy_result:expr) => {
+        if cfg!(feature = "legacy-ops") {
+            $legacy_result
+        } else {
+            $result
+        }
+    };
+}