pyproject.toml: add mypy and pytest config

Signed-off-by: Hiroshi Miura <miurahr@linux.com>

pyproject.toml

@@ -2,7 +2,7 @@
 name = "aqtinstall"
 description = "Another unofficial Qt installer"
 readme = "README.rst"
-license = { text = "MIT License"}
+license = {text = "MIT License"}
 authors = [
     {name = "Hiroshi Miura", email = "miurahr@linux.com"},
 ]
@@ -68,7 +68,7 @@ docs = [
 
 [project.urls]
 Documentation = "https://aqtinstall.readthedocs.io/"
-Bug_Tracker = "https://github.com/miurahr/aqtinstall/issues"
+"Bug Tracker" = "https://github.com/miurahr/aqtinstall/issues"
 Wiki = "https://github.com/miurahr/aqtinstall/wiki"
 Source = "https://github.com/miurahr/aqtinstall"
 Changelog = "https://github.com/miurahr/aqtinstall/blob/master/CHANGELOG.rst"
@@ -114,6 +114,24 @@ force_grid_wrap = 0
 use_parentheses = true
 ensure_newline_before_comments = true
 
+[tool.mypy]
+warn_redundant_casts = true
+warn_unused_ignores = true
+strict_optional = true
+show_column_numbers = true
+
+[tool.pytest.ini_options]
+minversion = "6.0"
+testpaths = ["tests"]
+python_files = "test*.py"
+norecursedirs = [".git", "_build", "tmp", ".eggs"]
+timeout = 480
+markers = [
+    "unit: mark a test as an unit test.",
+    "enable_socket : mark a test with enabling socket.",
+    "remote_data: mark a test with remote data.",
+]
+
 [tool.tox]
 legacy_tox_ini = """
 [tox]