test: for verifying changes in manifest file (#804)

* Prepare 0.2.1 (#817)

* add test for verifying changes in manifest file

* rework tests

* update manifest file after rebase

* clean up

* fix generated file path

* make clippy overlords happy

* remove unnecessary changes

* use symbolic link instead of copying

---------

Co-authored-by: Tarrence van As <tarrencev@users.noreply.github.com>

.gitignore

@@ -1,4 +1,4 @@
-/target
+**/target
 workspace
 .idea/
 dojo.iml

crates/dojo-lang/src/manifest.rs

@@ -187,3 +187,7 @@ impl Manifest {
         Ok(())
     }
 }
+
+#[cfg(test)]
+#[path = "manifest_test.rs"]
+mod test;

crates/dojo-lang/src/manifest_test.rs

@@ -0,0 +1,35 @@
+use std::path::Path;
+use std::{env, fs};
+
+use cairo_lang_utils::ordered_hash_map::OrderedHashMap;
+use dojo_test_utils::compiler::build_test_config;
+use scarb::ops;
+
+cairo_lang_test_utils::test_file_test!(
+    manifest_file,
+    "src/manifest_test_data/",
+    {
+        manifest: "manifest",
+    },
+    test_manifest_file
+);
+
+pub fn test_manifest_file(
+    _inputs: &OrderedHashMap<String, String>,
+) -> OrderedHashMap<String, String> {
+    let config =
+        build_test_config("./src/manifest_test_data/manifest_test_crate/Scarb.toml").unwrap();
+    let ws = ops::read_workspace(config.manifest_path(), &config).unwrap();
+
+    let packages = ws.members().map(|p| p.id).collect();
+    ops::compile(packages, &ws).unwrap_or_else(|op| panic!("Error compiling: {op:?}"));
+
+    let target_dir = config.target_dir().path_existent().unwrap();
+
+    let generated_manifest_path =
+        Path::new(target_dir).join(config.profile().as_str()).join("manifest.json");
+
+    let generated_file = fs::read_to_string(generated_manifest_path).unwrap();
+
+    OrderedHashMap::from([("expected_manifest_file".into(), generated_file)])
+}