export xtest inventory

Author: devrandom

ext-functional-test-demo/src/main.rs

@@ -1,5 +1,5 @@
 fn main() {
-	println!("Hello, world!");
+	println!("{} tests were exported", lightning::get_xtests().len());
 }
 
 #[cfg(test)]

ext-test-macro/Cargo.toml

@@ -12,3 +12,6 @@ proc-macro = true
 syn = { version = "1.0", features = ["full"] }
 quote = "1.0"
 proc-macro2 = "1.0"
+
+[dev-dependencies]
+inventory = "0.3"

ext-test-macro/src/lib.rs

@@ -74,9 +74,18 @@ pub fn xtest(attrs: TokenStream, item: TokenStream) -> TokenStream {
 				.into();
 			}
 
+			let fn_name = &item_fn.sig.ident;
+			let fn_name_str = fn_name.to_string();
 			quote! {
 				#cfg_attr
 				#item_fn
+
+				inventory::submit! {
+					crate::XTestItem {
+						test_fn: #fn_name,
+						test_name: #fn_name_str,
+					}
+				}
 			}
 		},
 		_ => {
@@ -91,3 +100,36 @@ pub fn xtest(attrs: TokenStream, item: TokenStream) -> TokenStream {
 
 	TokenStream::from(expanded)
 }
+
+#[proc_macro]
+pub fn xtest_inventory(_input: TokenStream) -> TokenStream {
+    let expanded = quote! {
+        pub struct XTestItem {
+            pub test_fn: fn(),
+            pub test_name: &'static str,
+        }
+
+        inventory::collect!(XTestItem);
+
+        pub fn get_xtests() -> Vec<&'static XTestItem> {
+            inventory::iter::<XTestItem>
+                .into_iter()
+                .collect()
+        }
+
+        #[macro_export]
+        macro_rules! xtest_inventory {
+            ($test_fn:expr, $test_name:expr) => {
+                inventory::submit! {
+                    XTestItem {
+                        test_fn: $test_fn,
+                        test_name: $test_name,
+                    }
+                }
+            };
+        }
+    };
+
+    TokenStream::from(expanded)
+}
+

lightning/Cargo.toml

@@ -17,7 +17,7 @@ rustdoc-args = ["--cfg", "docsrs"]
 
 [features]
 # Internal test utilities exposed to other repo crates
-_test_utils = ["regex", "bitcoin/bitcoinconsensus", "ext-test-macro", "lightning-types/_test_utils"]
+_test_utils = ["regex", "bitcoin/bitcoinconsensus", "ext-test-macro", "lightning-types/_test_utils", "inventory"]
 # Unlog messages superior at targeted level.
 max_level_off = []
 max_level_error = []
@@ -51,6 +51,7 @@ backtrace = { version = "0.3", optional = true }
 libm = { version = "0.2", default-features = false }
 delegate = "0.12.0"
 ext-test-macro = { path = "../ext-test-macro", optional = true }
+inventory = { version = "0.3", optional = true  }
 
 [dev-dependencies]
 regex = "1.5.6"

lightning/src/lib.rs

@@ -149,3 +149,6 @@ mod prelude {
 extern crate backtrace;
 
 mod sync;
+
+#[cfg(feature = "_test_utils")]
+ext_test_macro::xtest_inventory!();