Increase OAS description

Parce docstring of http handlers to increase OAS
Remove the not expected definitions key in the OAS

tests/test_oas/test_docstring_parser.py

@@ -0,0 +1,88 @@
+from aiohttp_pydantic.oas.docstring_parser import (
+    status_code,
+    operation,
+    _i_extract_block,
+    LinesIterator,
+)
+from inspect import getdoc
+import pytest
+
+
+def web_handler():
+    """
+    bla bla bla
+
+
+    Status Codes:
+        200: line 1
+
+          line 2:
+            - line 3
+            - line 4
+
+          line 5
+
+        300: line A 1
+
+        301: line B 1
+          line B 2
+        400: line C 1
+
+             line C 2
+
+               line C 3
+
+    bla bla
+    """
+
+
+def test_lines_iterator():
+    lines_iterator = LinesIterator("AAAA\nBBBB")
+    with pytest.raises(StopIteration):
+        lines_iterator.rewind()
+
+    assert lines_iterator.next_line() == "AAAA"
+    assert lines_iterator.rewind()
+    assert lines_iterator.next_line() == "AAAA"
+    assert lines_iterator.next_line() == "BBBB"
+    with pytest.raises(StopIteration):
+        lines_iterator.next_line()
+
+
+def test_status_code():
+
+    expected = {
+        200: "line 1\n\nline 2:\n  - line 3\n  - line 4\n\nline 5",
+        300: "line A 1",
+        301: "line B 1\nline B 2",
+        400: "line C 1\n\nline C 2\n\n  line C 3",
+    }
+
+    assert status_code(getdoc(web_handler)) == expected
+
+
+def test_operation():
+    expected = "bla bla bla\n\n\nbla bla"
+    assert operation(getdoc(web_handler)) == expected
+
+
+def test_i_extract_block():
+    lines = LinesIterator("  aaaa\n\n    bbbb\n\n  cccc\n dddd")
+    text = "\n".join(_i_extract_block(lines))
+    assert text == """aaaa\n\n  bbbb\n\ncccc"""
+
+    lines = LinesIterator("")
+    text = "\n".join(_i_extract_block(lines))
+    assert text == ""
+
+    lines = LinesIterator("aaaa\n   bbbb")  # the indented block is cut by a new block
+    text = "\n".join(_i_extract_block(lines))
+    assert text == ""
+
+    lines = LinesIterator("  \n  ")
+    text = "\n".join(_i_extract_block(lines))
+    assert text == ""
+
+    lines = LinesIterator("  aaaa\n  bbbb")
+    text = "\n".join(_i_extract_block(lines))
+    assert text == "aaaa\nbbbb"