Add failure cases to http integration tests (#239)

juniper/src/http/mod.rs

@@ -168,6 +168,15 @@ pub mod tests {
 
         println!("  - test_batched_post");
         test_batched_post(integration);
+
+        println!("  - test_invalid_json");
+        test_invalid_json(integration);
+
+        println!("  - test_invalid_field");
+        test_invalid_field(integration);
+
+        println!("  - test_duplicate_keys");
+        test_duplicate_keys(integration);
     }
 
     fn unwrap_json_response(response: &TestResponse) -> Json {
@@ -281,4 +290,29 @@ pub mod tests {
             ).expect("Invalid JSON constant in test")
         );
     }
+
+    fn test_invalid_json<T: HTTPIntegration>(integration: &T) {
+        let response = integration.get("/?query=blah");
+        assert_eq!(response.status_code, 400);
+        let response = integration.post("/", r#"blah"#);
+        assert_eq!(response.status_code, 400);
+    }
+
+    fn test_invalid_field<T: HTTPIntegration>(integration: &T) {
+        // {hero{blah}}
+        let response = integration.get("/?query=%7Bhero%blah%7D%7D");
+        assert_eq!(response.status_code, 400);
+        let response = integration.post("/", r#"{"query": "{hero{blah}}"}"#);
+        assert_eq!(response.status_code, 400);
+    }
+
+    fn test_duplicate_keys<T: HTTPIntegration>(integration: &T) {
+        // {hero{name}}
+        let response = integration.get("/?query=%7B%22query%22%3A%20%22%7Bhero%7Bname%7D%7D%22%2C%20%22query%22%3A%20%22%7Bhero%7Bname%7D%7D%22%7D");
+        assert_eq!(response.status_code, 400);
+        let response = integration.post("/", r#"
+            {"query": "{hero{name}}", "query": "{hero{name}}"}
+        "#);
+        assert_eq!(response.status_code, 400);
+    }
 }

juniper_iron/src/lib.rs

@@ -381,7 +381,7 @@ impl From<GraphQLIronError> for IronError {
 
 #[cfg(test)]
 mod tests {
-    use iron::prelude::*;
+    use super::*;
     use iron::Url;
     use iron::{Handler, Headers};
     use iron_test::{request, response};
@@ -413,20 +413,19 @@ mod tests {
 
     impl http_tests::HTTPIntegration for TestIronIntegration {
         fn get(&self, url: &str) -> http_tests::TestResponse {
-            make_test_response(request::get(
-                &fixup_url(url),
-                Headers::new(),
-                &make_handler(),
-            ))
+            let result = request::get(&fixup_url(url), Headers::new(), &make_handler());
+            match result {
+                Ok(response) => make_test_response(response),
+                Err(e) => make_test_error_response(e),
+            }
         }
 
         fn post(&self, url: &str, body: &str) -> http_tests::TestResponse {
-            make_test_response(request::post(
-                &fixup_url(url),
-                Headers::new(),
-                body,
-                &make_handler(),
-            ))
+            let result = request::post(&fixup_url(url), Headers::new(), body, &make_handler());
+            match result {
+                Ok(response) => make_test_response(response),
+                Err(e) => make_test_error_response(e),
+            }
         }
     }
 
@@ -441,8 +440,17 @@ mod tests {
         Ok(Database::new())
     }
 
-    fn make_test_response(response: IronResult<Response>) -> http_tests::TestResponse {
-        let response = response.expect("Error response from GraphQL handler");
+    fn make_test_error_response(_: IronError) -> http_tests::TestResponse {
+        // For now all errors return the same status code.
+        // `juniper_iron` users can choose to do something different if desired.
+        http_tests::TestResponse {
+            status_code: 400,
+            body: None,
+            content_type: "application/json".to_string(),
+        }
+    }
+
+    fn make_test_response(response: Response) -> http_tests::TestResponse {
         let status_code = response
             .status
             .expect("No status code returned from handler")