Test validate()

corpus/invalid.json

@@ -0,0 +1,20 @@
+{
+  "name": "pair",
+  "abstract": "A key/value pair data type",
+  "maintainers": [
+    {
+      "name": "David E. Wheeler",
+      "email": "[email protected]"
+    }
+  ],
+  "license": "PostgreSQL",
+  "contents": {
+    "extensions": {
+      "pair": {
+        "sql": "sql/pair.sql",
+        "control": "pair.control"
+      }
+    }
+  },
+  "meta-spec": { "version": "2.0.0" }
+}

src/main.rs

@@ -253,4 +253,36 @@ mod tests {
 
         Ok(())
     }
+
+    #[test]
+    fn test_validate() -> Result<(), Box<dyn Error>> {
+        // Success first.
+        let meta = Path::new(env!("CARGO_MANIFEST_DIR"))
+            .join("corpus")
+            .join("v2")
+            .join("minimal.json");
+
+        match validate(meta.as_os_str().to_str().unwrap()) {
+            Ok(_) => (),
+            Err(e) => panic!("Validation failed: {e}"),
+        }
+
+        // Invalid next.
+        let meta = Path::new(env!("CARGO_MANIFEST_DIR"))
+            .join("corpus")
+            .join("invalid.json");
+
+        match std::panic::catch_unwind(|| validate(meta.as_os_str().to_str().unwrap())) {
+            Ok(_) => panic!("Should have failed on invalid.json but did not"),
+            Err(e) => {
+                if let Ok(msg) = e.downcast::<String>() {
+                    assert!(msg.contains(" missing properties 'version"));
+                } else {
+                    panic!("Unexpected panic error");
+                }
+            }
+        }
+
+        Ok(())
+    }
 }