Refactor and add test for api1 binary query

parse/src/jsonconf.rs

@@ -0,0 +1,32 @@
+#[test]
+fn test_json_trailing() {
+    use serde::Deserialize;
+    use serde_json::Value as JsonValue;
+    use std::io::Cursor;
+    if serde_json::from_str::<JsonValue>(r#"{}."#).is_ok() {
+        panic!("Should fail because of trailing character");
+    }
+    let cur = Cursor::new(r#"{}..."#);
+    let mut de = serde_json::Deserializer::from_reader(cur);
+    if JsonValue::deserialize(&mut de).is_err() {
+        panic!("Should allow trailing characters")
+    }
+    let cur = Cursor::new(r#"nullA"#);
+    let mut de = serde_json::Deserializer::from_reader(cur);
+    if let Ok(val) = JsonValue::deserialize(&mut de) {
+        if val != serde_json::json!(null) {
+            panic!("Bad parse")
+        }
+    } else {
+        panic!("Should allow trailing characters")
+    }
+    let cur = Cursor::new(r#"  {}AA"#);
+    let mut de = serde_json::Deserializer::from_reader(cur);
+    if let Ok(val) = JsonValue::deserialize(&mut de) {
+        if val != serde_json::json!({}) {
+            panic!("Bad parse")
+        }
+    } else {
+        panic!("Should allow trailing characters")
+    }
+}