Add a test for #2510

Closes #2510.

tests/lib.rs

@@ -330,26 +330,28 @@ fn check_files(files: Vec<PathBuf>) -> (Vec<FormatReport>, u32, u32) {
 }
 
 fn print_mismatches_default_message(result: HashMap<PathBuf, Vec<Mismatch>>) {
-    let mut t = term::stdout().unwrap();
     for (file_name, diff) in result {
         let mismatch_msg_formatter =
             |line_num| format!("\nMismatch at {}:{}:", file_name.display(), line_num);
         print_diff(diff, &mismatch_msg_formatter, Color::Auto);
     }
 
-    t.reset().unwrap();
+    if let Some(mut t) = term::stdout() {
+        t.reset().unwrap_or(());
+    }
 }
 
 fn print_mismatches<T: Fn(u32) -> String>(
     result: HashMap<PathBuf, Vec<Mismatch>>,
     mismatch_msg_formatter: T,
 ) {
-    let mut t = term::stdout().unwrap();
     for (_file_name, diff) in result {
         print_diff(diff, &mismatch_msg_formatter, Color::Auto);
     }
 
-    t.reset().unwrap();
+    if let Some(mut t) = term::stdout() {
+        t.reset().unwrap_or(());
+    }
 }
 
 fn read_config(filename: &Path) -> Config {

tests/source/type.rs

@@ -23,3 +23,18 @@ fn impl_trait_fn_2<E>() -> impl Future<Item=&'a i64,Error=E> {}
 fn issue_1234() {
     do_parse!(name: take_while1!(is_token) >> (Header))
 }
+
+// #2510
+impl CombineTypes {
+    pub fn pop_callback(
+        &self,
+        query_id: Uuid,
+    ) -> Option<
+        (
+            ProjectId,
+            Box<FnMut(&ProjectState, serde_json::Value, bool) -> () + Sync + Send>,
+        ),
+    > {
+        self.query_callbacks()(&query_id)
+    }
+}

tests/target/type.rs

@@ -29,3 +29,16 @@ fn impl_trait_fn_2<E>() -> impl Future<Item = &'a i64, Error = E> {}
 fn issue_1234() {
     do_parse!(name: take_while1!(is_token) >> (Header))
 }
+
+// #2510
+impl CombineTypes {
+    pub fn pop_callback(
+        &self,
+        query_id: Uuid,
+    ) -> Option<(
+        ProjectId,
+        Box<FnMut(&ProjectState, serde_json::Value, bool) -> () + Sync + Send>,
+    )> {
+        self.query_callbacks()(&query_id)
+    }
+}