feat: assert whether generated and versioned schema are identical

.github/workflows/ci.yml

@@ -14,12 +14,14 @@ jobs:
           cargo test
           cargo clippy -- -Dwarnings
 
-  generate_schema:
+  validate_schema:
     runs-on: ubuntu-latest
     needs: build_and_test
-    if: github.ref == 'refs/heads/main'
+    # if: github.ref == 'refs/heads/main'
     steps:
       - uses: actions/checkout@v3
-      - name: Generate schema
+      - name: Test schema
         run: |
-            cargo run
+            cargo run --release > schema.gen.json
+            # assert the generated and versioned file equal
+            diff -B schema/data-model-schema.json schema.gen.json

schema/data-model-schema.json

@@ -801,4 +801,4 @@
       "pattern": "^\\d+\\.\\d+\\.\\d+(-\\d{8})?$"
     }
   }
-}
+}

src/main.rs

@@ -7,7 +7,11 @@ use std::io::{Error, Write};
 fn main() -> Result<(), Error> {
     let schema = schema_for!(ProductFootprint);
 
-    let schema_json = to_string_pretty(&schema).expect("Failed to serialize schema");
+    let mut schema_json = to_string_pretty(&schema).expect("Failed to serialize schema");
+
+    if !schema_json.ends_with('\n') {
+        schema_json.push('\n');
+    }
 
     let mut file = File::create("./schema/data-model-schema.json")?;