FormalAnnotation tests

Author: emptybutton

tests.py

@@ -0,0 +1,21 @@
+from typing import Any, Union, Optional, Callable, Iterable, Sized
+
+from pytest import mark
+
+from pyannotating import FormalAnnotation, InputAnnotationAnnotation, AnnotationTemplate, input_annotation, Special
+
+
+@mark.parametrize(
+    "input_resource, result",
+    [(42, 42), (Any, Any), (int | float, int | float)]
+)
+def test_formal_annotation(input_resource: Any, result: Any):
+    assert FormalAnnotation()[input_resource] == result
+
+
+@mark.parametrize(
+    'doc',
+    ["Documentation", "\n\t.!#@$2*-_\n", b"\tHello\n\tWorld\n\t!", str()]
+)
+def test_formal_annotation_documenting(doc: str):
+    assert FormalAnnotation(doc).__doc__ == doc