feat: add test_helpers module (error_utils, test_utils) behind test_utlis flag

.gitignore

@@ -4,6 +4,7 @@
 **/*.json
 !hint_accountant/whitelists/*.json
 !cairo_programs/manually_compiled/*.json
+!vm/src/test_helpers/dummy.json
 **/*.casm
 **/*.sierra
 **/*.trace

CHANGELOG.md

@@ -11,6 +11,7 @@ Both branches support Stwo prover opcodes (Blake2s, QM31) since v2.0.0.
 ---
 
 #### Upcoming Changes
+* feat: add `test_helpers` module (`error_utils`, `test_utils`) with `assert_mr_eq!`, `load_cairo_program!` macros and `expect_*` error checkers, behind `test_utils` feature flag [#2381](https://github.com/starkware-libs/cairo-vm/pull/2381)
 
 * Add Stwo cairo runner API [#2351](https://github.com/lambdaclass/cairo-vm/pull/2351)
 

vm/src/lib.rs

@@ -26,6 +26,9 @@ pub mod types;
 pub mod utils;
 pub mod vm;
 
+#[cfg(feature = "test_utils")]
+pub mod test_helpers;
+
 // TODO: use `Felt` directly
 pub use starknet_types_core::felt::Felt as Felt252;
 

vm/src/test_helpers/dummy.json

@@ -0,0 +1,69 @@
+{
+    "attributes": [],
+    "builtins": [],
+    "compiler_version": "0.13.5",
+    "data": [
+        "0x208b7fff7fff7ffe"
+    ],
+    "debug_info": {
+        "file_contents": {},
+        "instruction_locations": {
+            "0": {
+                "accessible_scopes": [
+                    "__main__",
+                    "__main__.main"
+                ],
+                "flow_tracking_data": {
+                    "ap_tracking": {
+                        "group": 0,
+                        "offset": 0
+                    },
+                    "reference_ids": {}
+                },
+                "hints": [],
+                "inst": {
+                    "end_col": 15,
+                    "end_line": 2,
+                    "input_file": {
+                        "filename": "vm/src/test_helpers/dummy.cairo"
+                    },
+                    "start_col": 5,
+                    "start_line": 2
+                }
+            }
+        }
+    },
+    "hints": {},
+    "identifiers": {
+        "__main__.main": {
+            "decorators": [],
+            "pc": 0,
+            "type": "function"
+        },
+        "__main__.main.Args": {
+            "full_name": "__main__.main.Args",
+            "members": {},
+            "size": 0,
+            "type": "struct"
+        },
+        "__main__.main.ImplicitArgs": {
+            "full_name": "__main__.main.ImplicitArgs",
+            "members": {},
+            "size": 0,
+            "type": "struct"
+        },
+        "__main__.main.Return": {
+            "cairo_type": "()",
+            "type": "type_definition"
+        },
+        "__main__.main.SIZEOF_LOCALS": {
+            "type": "const",
+            "value": 0
+        }
+    },
+    "main_scope": "__main__",
+    "prime": "0x800000000000011000000000000000000000000000000000000000000000001",
+    "reference_manager": {
+        "references": []
+    }
+}