add trybuild compile tests

actix-macros/.gitignore

@@ -0,0 +1 @@
+/wip

actix-macros/Cargo.toml

@@ -8,7 +8,6 @@ documentation = "https://docs.rs/actix-macros/"
 categories = ["network-programming", "asynchronous"]
 license = "MIT/Apache-2.0"
 edition = "2018"
-workspace = ".."
 
 [lib]
 proc-macro = true
@@ -18,4 +17,8 @@ quote = "1.0.3"
 syn = { version = "^1", features = ["full"] }
 
 [dev-dependencies]
-actix-rt = { version = "1.0.0" }
+actix-rt = "1.0"
+
+futures = "0.3"
+compiletest_rs = "0.5"
+trybuild = "1"

actix-macros/src/lib.rs

@@ -99,3 +99,9 @@ pub fn test(_: TokenStream, item: TokenStream) -> TokenStream {
 
     result.into()
 }
+
+#[cfg(test)]
+mod tests_trybuild;
+
+#[cfg(test)]
+mod tests_compiletest;

actix-macros/src/tests_compiletest.rs

@@ -0,0 +1,6 @@
+#[test]
+fn main_macro() {
+    // let t = trybuild::TestCases::new();
+    // t.pass("tests/01-main.rs");
+    // // t.compile_fail("tests/03-expand-four-errors.rs");
+}

actix-macros/src/tests_trybuild.rs

@@ -0,0 +1,9 @@
+#[test]
+fn main_macro() {
+    let t = trybuild::TestCases::new();
+    t.pass("test-compile/main-01-basic.rs");
+    t.compile_fail("test-compile/main-02-only-async.rs");
+
+    t.pass("test-compile/test-01-basic.rs");
+    t.pass("test-compile/test-02-keep-attrs.rs");
+}

actix-macros/test-compile/main-01-basic.rs

@@ -0,0 +1,4 @@
+#[actix_rt::main]
+async fn main() {
+    println!("Hello world");
+}

actix-macros/test-compile/main-02-only-async.rs

@@ -0,0 +1,4 @@
+#[actix_rt::main]
+fn main() {
+    futures::future::ready(()).await
+}

actix-macros/test-compile/main-02-only-async.stderr

@@ -0,0 +1,14 @@
+error: only async fn is supported
+ --> $DIR/main-02-only-async.rs:2:1
+  |
+2 | fn main() {
+  | ^^
+
+error[E0601]: `main` function not found in crate `$CRATE`
+ --> $DIR/main-02-only-async.rs:1:1
+  |
+1 | / #[actix_rt::main]
+2 | | fn main() {
+3 | |     futures::future::ready(()).await
+4 | | }
+  | |_^ consider adding a `main` function to `$DIR/test-compile/main-02-only-async.rs`

actix-macros/test-compile/test-01-basic.rs

@@ -0,0 +1,6 @@
+#[actix_rt::test]
+async fn my_test() {
+    assert!(true);
+}
+
+fn main() {}

actix-macros/test-compile/test-02-keep-attrs.rs

@@ -0,0 +1,7 @@
+#[actix_rt::test]
+#[should_panic]
+async fn my_test() {
+    todo!()
+}
+
+fn main() {}