test: add tests for version info in zarr

As part of my open source journey, I contributed to the Zarr-Python project—a community-driven library for chunked, compressed N-dimensional arrays—by adding and validating tests for its version information. Following the project’s contribution guidelines, I set up a development environment, explored the codebase, and ensured my changes were clear and reviewable. My tests guarantee that the version metadata (zarr.__version__) is always present and correctly formatted, which is essential for bug reporting, compatibility checks, and reliable package releases. This aligns with Zarr’s commitment to high test coverage and robust, user-friendly development practices.

Author: NITHIVARSHA T P

tests/test_version.py

@@ -0,0 +1,26 @@
+"""Tests for zarr._version module"""
+import pytest
+import importlib
+import sys
+
+
+def test_version_is_available():
+    """Test that __version__ is available and is a string."""
+    from zarr import __version__
+    assert __version__ is not None
+    assert isinstance(__version__, str)
+    assert len(__version__) > 0
+
+
+def test_version_format():
+    """Test that version follows basic format."""
+    from zarr import __version__
+    assert isinstance(__version__, str)
+    # Basic check: should contain a dot or dash
+    assert '.' in __version__ or '-' in __version__
+
+
+def test_version_is_not_unknown_in_normal_case():
+    from zarr import __version__
+    assert __version__ != "unknown"
+