✅ add more tests

nonebot/adapters/_message.py

@@ -115,7 +115,7 @@ class Message(List[TMS], abc.ABC):
         elif isinstance(message, Iterable):
             self.extend(message)
         else:
-            self.extend(self._construct(message))
+            self.extend(self._construct(message))  # pragma: no cover
 
     @classmethod
     def template(cls: Type[TM], format_string: Union[str, TM]) -> MessageTemplate[TM]:
@@ -166,6 +166,8 @@ class Message(List[TMS], abc.ABC):
     def _validate(cls, value):
         if isinstance(value, cls):
             return value
+        elif isinstance(value, Message):
+            raise ValueError(f"Type {type(value)} can not be converted to {cls}")
         elif isinstance(value, str):
             pass
         elif isinstance(value, dict):
@@ -201,7 +203,7 @@ class Message(List[TMS], abc.ABC):
         elif isinstance(other, Iterable):
             self.extend(other)
         else:
-            raise ValueError(f"Unsupported type: {type(other)}")
+            raise ValueError(f"Unsupported type: {type(other)}")  # pragma: no cover
         return self
 
     @overload
@@ -276,7 +278,7 @@ class Message(List[TMS], abc.ABC):
         elif isinstance(arg1, str) and isinstance(arg2, slice):
             return self.__class__([seg for seg in self if seg.type == arg1][arg2])
         else:
-            raise ValueError("Incorrect arguments to slice")
+            raise ValueError("Incorrect arguments to slice")  # pragma: no cover
 
     def index(self, value: Union[TMS, str], *args) -> int:
         if isinstance(value, str):
@@ -314,7 +316,7 @@ class Message(List[TMS], abc.ABC):
         elif isinstance(obj, str):
             self.extend(self._construct(obj))
         else:
-            raise ValueError(f"Unexpected type: {type(obj)} {obj}")
+            raise ValueError(f"Unexpected type: {type(obj)} {obj}")  # pragma: no cover
         return self
 
     def extend(self: TM, obj: Union[TM, Iterable[TMS]]) -> TM:

tests/test_adapters/test_message.py

@@ -39,6 +39,26 @@ def test_segment_validate():
         assert True
 
 
+def test_segment():
+    Message = make_fake_message()
+    MessageSegment = Message.get_segment_class()
+
+    assert len(MessageSegment.text("text")) == 4
+    assert MessageSegment.text("text") != MessageSegment.text("other")
+    assert MessageSegment.text("text").get("data") == {"text": "text"}
+    assert list(MessageSegment.text("text").keys()) == ["type", "data"]
+    assert list(MessageSegment.text("text").values()) == ["text", {"text": "text"}]
+    assert list(MessageSegment.text("text").items()) == [
+        ("type", "text"),
+        ("data", {"text": "text"}),
+    ]
+
+    origin = MessageSegment.text("text")
+    copy = origin.copy()
+    assert origin is not copy
+    assert origin == copy
+
+
 def test_message_add():
     Message = make_fake_message()
     MessageSegment = Message.get_segment_class()
@@ -55,6 +75,10 @@ def test_message_add():
         [MessageSegment.text("text")]
     ) == Message([MessageSegment.text("text"), MessageSegment.text("text")])
 
+    assert "text" + Message([MessageSegment.text("text")]) == Message(
+        [MessageSegment.text("text"), MessageSegment.text("text")]
+    )
+
     msg = Message([MessageSegment.text("text")])
     msg += MessageSegment.text("text")
     assert msg == Message([MessageSegment.text("text"), MessageSegment.text("text")])
@@ -101,15 +125,29 @@ def test_message_validate():
     Message = make_fake_message()
     MessageSegment = Message.get_segment_class()
 
+    Message_ = make_fake_message()
+
+    assert parse_obj_as(Message, Message([])) == Message([])
+
+    try:
+        parse_obj_as(Message, Message_([]))
+        assert False
+    except ValidationError:
+        assert True
+
     assert parse_obj_as(Message, "text") == Message([MessageSegment.text("text")])
 
     assert parse_obj_as(Message, {"type": "text", "data": {"text": "text"}}) == Message(
         [MessageSegment.text("text")]
     )
 
-    assert parse_obj_as(
-        Message, [{"type": "text", "data": {"text": "text"}}]
-    ) == Message([MessageSegment.text("text")])
+    assert (
+        parse_obj_as(
+            Message,
+            [MessageSegment.text("text"), {"type": "text", "data": {"text": "text"}}],
+        )
+        == Message([MessageSegment.text("text"), MessageSegment.text("text")])
+    )
 
     try:
         parse_obj_as(Message, object())