build: keep the package version in tradingagents.__version__

- pyproject reads the version from tradingagents/__init__.py, so a source checkout, an editable install and a wheel report the same one
- the SEC EDGAR User-Agent names tradingagents.__version__

tests/test_sec_edgar.py

@@ -221,22 +221,12 @@ def test_a_period_reported_under_two_tags_takes_the_preferred_one_not_both():
 
 
 @pytest.mark.unit
-def test_the_default_identification_tracks_the_installed_version(monkeypatch):
-    """A release should identify itself, not a version frozen in the source."""
+def test_the_default_identification_names_the_package_version(monkeypatch):
+    """SEC asks automated clients to identify themselves; a release names its own version."""
+    import tradingagents
+
     monkeypatch.delenv("SEC_EDGAR_USER_AGENT", raising=False)
-    monkeypatch.setattr(sec_edgar.metadata, "version", lambda name: "9.9.9")
-    assert sec_edgar._user_agent() == "TradingAgents/9.9.9 (contact@example.com)"
-
-
-@pytest.mark.unit
-def test_an_uninstalled_checkout_still_identifies_itself(monkeypatch):
-    monkeypatch.delenv("SEC_EDGAR_USER_AGENT", raising=False)
-
-    def _missing(name):
-        raise sec_edgar.metadata.PackageNotFoundError(name)
-
-    monkeypatch.setattr(sec_edgar.metadata, "version", _missing)
-    assert "@" in sec_edgar._user_agent()
+    assert sec_edgar._user_agent() == f"TradingAgents/{tradingagents.__version__} (contact@example.com)"
 
 
 @pytest.mark.unit

tests/test_version.py

@@ -0,0 +1,18 @@
+"""The package version has one source, tradingagents.__version__, which the build reads."""
+
+import re
+from pathlib import Path
+
+import pytest
+
+import tradingagents
+
+PYPROJECT = (Path(__file__).resolve().parents[1] / "pyproject.toml").read_text(encoding="utf-8")
+
+
+@pytest.mark.unit
+def test_the_build_reads_the_version_from_the_package():
+    assert re.search(r'^dynamic = \["version"\]', PYPROJECT, re.M)
+    assert 'version = {attr = "tradingagents.__version__"}' in PYPROJECT
+    assert not re.search(r'^version = "', PYPROJECT, re.M)
+    assert re.fullmatch(r"\d+\.\d+\.\d+(\.dev\d+|rc\d+)?", tradingagents.__version__)