Add unit tests for calculator

calculator/lib/python3.12/site-packages/coverage/exceptions.py

@@ -0,0 +1,85 @@
+# Licensed under the Apache License: http://www.apache.org/licenses/LICENSE-2.0
+# For details: https://github.com/coveragepy/coveragepy/blob/main/NOTICE.txt
+
+"""Exceptions coverage.py can raise."""
+
+from __future__ import annotations
+
+from typing import Any
+
+
+class CoverageException(Exception):
+    """The base class of all exceptions raised by Coverage.py."""
+
+    def __init__(
+        self,
+        *args: Any,
+        slug: str | None = None,
+    ) -> None:
+        """Create an exception.
+
+        Args:
+            slug: A short string identifying the exception, will be used for
+                linking to documentation.
+        """
+
+        super().__init__(*args)
+        self.slug = slug
+
+
+class ConfigError(CoverageException):
+    """A problem with a config file, or a value in one."""
+
+    pass
+
+
+class DataError(CoverageException):
+    """An error in using a data file."""
+
+    pass
+
+
+class NoDataError(CoverageException):
+    """We didn't have data to work with."""
+
+    pass
+
+
+class NoSource(CoverageException):
+    """We couldn't find the source for a module."""
+
+    pass
+
+
+class NoCode(NoSource):
+    """We couldn't find any code at all."""
+
+    pass
+
+
+class NotPython(CoverageException):
+    """A source file turned out not to be parsable Python."""
+
+    pass
+
+
+class PluginError(CoverageException):
+    """A plugin misbehaved."""
+
+    pass
+
+
+class _ExceptionDuringRun(CoverageException):
+    """An exception happened while running customer code.
+
+    Construct it with three arguments, the values from `sys.exc_info`.
+
+    """
+
+    pass
+
+
+class CoverageWarning(Warning):
+    """A warning from Coverage.py."""
+
+    pass