Add test for code completion

pyproject.toml

@@ -67,6 +67,7 @@ pytest-xdist = "^3.5.0"
 types-PyYAML = "^6.0.9"
 msgpack-types = "^0.3"
 envclasses = "^0.3.1"
+jedi = "*"
 
 [tool.poetry.extras]
 msgpack = ["msgpack"]

tests/test_code_completion.py

@@ -0,0 +1,23 @@
+import jedi
+
+
+def test_jedi() -> None:
+    source = """
+from serde import serde
+
+@serde
+class Foo:
+    a: int
+    b: float
+    c: str
+    baz: bool
+
+foo = Foo(10, 100.0, "foo", True)
+"""
+    source_completion = source + "\n" + "foo."
+    jedi_script = jedi.Script(source_completion, path="foo.py")
+    completions = jedi_script.complete(9, len("foo."))
+    completions = [comp.name for comp in completions]
+    assert "a" in completions
+    assert "b" in completions
+    assert "c" in completions