Add assert_any_ok macro to unit tests

Sometimes we cannot use assert_ok! as we can’t compare the Ok value (or
do not want to).  For these cases, this patch adds the new assert_any_ok
macro to use instead of assert!(x.is_ok()).  The advantage is that the
error information is not discarded but printed in a helpful error
message.

1 files changed, 15 insertions, 0 deletions

diff --git a/tests/util/mod.rs b/tests/util/mod.rs
index 2bda9ba..bd207a9 100644
--- a/tests/util/mod.rs
+++ b/tests/util/mod.rs
@@ -22,6 +22,21 @@ macro_rules! unwrap_ok {
 }
 
 #[macro_export]
+macro_rules! assert_any_ok {
+    ($val:expr) => {{
+        match &$val {
+            Ok(_) => {}
+            Err(err) => panic!(
+                r#"assertion failed: `(left == right)`
+  left: `Ok(_)`,
+ right: `Err({:?})`"#,
+                err
+            ),
+        }
+    }};
+}
+
+#[macro_export]
 macro_rules! assert_ok {
     ($left:expr, $right:expr) => {{
         match &$right {