feat: add assert_compact_debug_snapshot

insta/src/macros.rs

@@ -315,6 +315,20 @@ macro_rules! assert_debug_snapshot {
     };
 }
 
+/// Asserts a `Debug` snapshot in compact format.
+///
+/// The value needs to implement the `fmt::Debug` trait.  This is useful for
+/// simple values that do not implement the `Serialize` trait, but does not
+/// permit redactions.
+///
+/// Debug is called with `"{:?}"`, which means this does not use pretty-print.
+#[macro_export]
+macro_rules! assert_compact_debug_snapshot {
+    ($($arg:tt)*) => {
+        $crate::_assert_snapshot_base!(transform=|v| std::format!("{:?}", v), $($arg)*)
+    };
+}
+
 // A helper macro which takes a closure as `transform`, and runs the closure on
 // the value. This allows us to implement other macros with a small wrapper. All
 // snapshot macros eventually call this macro.

insta/tests/test_inline.rs

@@ -9,7 +9,7 @@ use insta::assert_yaml_snapshot;
 #[cfg(feature = "json")]
 use insta::{assert_compact_json_snapshot, assert_json_snapshot};
 
-use insta::{assert_debug_snapshot, assert_snapshot};
+use insta::{assert_compact_debug_snapshot, assert_debug_snapshot, assert_snapshot};
 use std::thread;
 
 #[test]
@@ -281,6 +281,12 @@ fn test_compact_json() {
     "###);
 }
 
+#[test]
+fn test_compact_debug() {
+    assert_compact_debug_snapshot!((1..30).collect::<Vec<_>>(), @"[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29]");
+    assert_compact_debug_snapshot!((1..34).collect::<Vec<_>>(), @"[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33]");
+}
+
 #[test]
 #[should_panic = "Insta does not allow inline snapshot assertions in loops"]
 fn test_inline_test_in_loop() {