Fix compilation problem with only serde feature enabled

Author: Hendrik van Antwerpen

stack-graphs/src/serde/mod.rs

@@ -8,17 +8,5 @@
 mod filter;
 mod graph;
 
-pub use filter::Filter;
-pub(crate) use filter::ImplicationFilter;
-pub use filter::NoFilter;
-pub use graph::DebugEntry;
-pub use graph::DebugInfo;
-pub use graph::Edge;
-pub use graph::Edges;
-pub use graph::Error;
-pub use graph::Files;
-pub use graph::Node;
-pub use graph::NodeID;
-pub use graph::Nodes;
-pub use graph::SourceInfo;
-pub use graph::StackGraph;
+pub use filter::*;
+pub use graph::*;

stack-graphs/tests/it/serde.rs

@@ -5,10 +5,13 @@
 // Please see the LICENSE-APACHE or LICENSE-MIT files in this distribution for license details.
 // ------------------------------------------------------------------------------------------------
 
+#[cfg(feature = "json")]
 use stack_graphs::graph;
+#[cfg(feature = "json")]
 use stack_graphs::serde;
 
-#[cfg_attr(feature = "json", test)]
+#[cfg(feature = "json")]
+#[test]
 fn serde_json_stack_graph() {
     let expected = serde::StackGraph {
         files: serde::Files {
@@ -128,7 +131,8 @@ fn serde_json_stack_graph() {
     assert_eq!(observed, expected);
 }
 
-#[cfg_attr(feature = "json", test)]
+#[cfg(feature = "json")]
+#[test]
 fn reconstruct() {
     let json_data = serde_json::json!(
         {