questions: add sync convert test

lib/src/questions.rs

@@ -157,6 +157,42 @@ pub mod convert {
             Box::new(iter)
         }
     }
+
+    #[cfg(test)]
+    mod test {
+        use crate::questions::test::convert_common::sample_batch;
+
+        use super::*;
+        use insta::assert_yaml_snapshot;
+        use std::iter;
+
+        #[test]
+        fn test_convert() {
+            let mut source = iter::once((
+                String::from("test.json"),
+                Ok::<SourceQuestionsBatch, serde_json::Error>(sample_batch()),
+            ));
+            let converted: Vec<_> = source.convert().collect();
+            assert_yaml_snapshot!(converted, @r#"
+            ---
+            - id: Вопрос 1
+              description: Сколько будет (2 * 2 * 2 + 2) * 2 * 2 + 2
+              answer: "42"
+              batch_info:
+                filename: test.json
+                description: Тестовый
+                date: 00-000-2000
+            - id: Вопрос 2
+              description: Зимой и летом одним цветом
+              answer: ёлка
+              batch_info:
+                filename: test.json
+                description: Тестовый
+                date: 00-000-2000
+              
+            "#);
+        }
+    }
 }
 #[cfg(feature = "convert")]
 pub use convert::QuestionsConverter;
@@ -222,6 +258,33 @@ mod test {
     use insta::assert_yaml_snapshot;
     use serde_json::json;
 
+    #[cfg(any(feature = "convert", feature = "convert_async"))]
+    pub mod convert_common {
+        use crate::source::{SourceQuestion, SourceQuestionsBatch};
+
+        pub fn sample_batch() -> SourceQuestionsBatch {
+            SourceQuestionsBatch {
+                description: "Тестовый".into(),
+                date: "00-000-2000".into(),
+                questions: vec![
+                    SourceQuestion {
+                        id: "Вопрос 1".into(),
+                        description: "Сколько будет (2 * 2 * 2 + 2) * 2 * 2 + 2".into(),
+                        answer: "42".into(),
+                        ..Default::default()
+                    },
+                    SourceQuestion {
+                        id: "Вопрос 2".into(),
+                        description: "Зимой и летом одним цветом".into(),
+                        answer: "ёлка".into(),
+                        ..Default::default()
+                    },
+                ],
+                ..Default::default()
+            }
+        }
+    }
+
     pub fn sample_question() -> Question {
         Question {
             id: "Вопрос 1".into(),