Add trybuild tests for event_enum! macro

ruma-events-macros/src/event_enum.rs

@@ -214,7 +214,7 @@ pub struct EventEnumInput {
     /// The name of the event.
     pub name: Ident,
 
-    /// An array of valid matrix event types. This will generate the variants of the event content type "name".
+    /// An array of valid matrix event types. This will generate the variants of the event type "name".
     /// There needs to be a corresponding variant in `ruma_events::EventType` for
     /// this event (converted to a valid Rust-style type name by stripping `m.`, replacing the
     /// remaining dots by underscores and then converting from snake_case to CamelCase).

tests/event_enums.rs

@@ -15,6 +15,13 @@ use ruma_events::{
     AnyMessageEvent, MessageEvent, UnsignedData,
 };
 
+#[test]
+fn ui() {
+    let t = trybuild::TestCases::new();
+    t.pass("tests/ui/07-enum-sanity-check.rs");
+    t.compile_fail("tests/ui/08-enum-invalid-path.rs");
+}
+
 #[test]
 fn deserialize_message_event() {
     let json_data = json!({

tests/ui/07-enum-sanity-check.rs

@@ -0,0 +1,15 @@
+use ruma_events_macros::event_enum;
+
+event_enum! {
+    /// Any basic event.
+    name: AnyBasicEvent,
+    events: [
+        "m.direct",
+        "m.dummy",
+        "m.ignored_user_list",
+        "m.push_rules",
+        "m.room_key",
+    ]
+}
+
+fn main() {}

tests/ui/08-enum-invalid-path.rs

@@ -0,0 +1,17 @@
+use ruma_events_macros::event_enum;
+
+event_enum! {
+    name: InvalidEvent,
+    events: [
+        "m.not.a.path",
+    ]
+}
+
+event_enum! {
+    name: InvalidEvent,
+    events: [
+        "not.a.path",
+    ]
+}
+
+fn main() {}

tests/ui/08-enum-invalid-path.stderr

@@ -0,0 +1,20 @@
+error: proc macro panicked
+  --> $DIR/08-enum-invalid-path.rs:10:1
+   |
+10 | / event_enum! {
+11 | |     name: InvalidEvent,
+12 | |     events: [
+13 | |         "not.a.path",
+14 | |     ]
+15 | | }
+   | |_^
+   |
+   = help: message: assertion failed: `(left == right)`
+             left: `"no"`,
+            right: `"m."`
+
+error[E0433]: failed to resolve: could not find `not` in `ruma_events`
+ --> $DIR/08-enum-invalid-path.rs:6:9
+  |
+6 |         "m.not.a.path",
+  |         ^^^^^^^^^^^^^^ could not find `not` in `ruma_events`