(tests.archives) added ion_storm.Dat tests

tests/archives/ion_storm/test_Dat.py

@@ -0,0 +1,27 @@
+import fnmatch
+import os
+
+import pytest
+
+from bsp_tool.archives import ion_storm
+
+from ... import utils
+
+
+dats = dict()
+archive = utils.archive_dirs()
+if archive.steam_dir is not None:
+    ax_dir = os.path.join(archive.steam_dir, "Anachronox/anoxdata")
+    dats = {
+        f"Anachronox | {dat_filename}": os.path.join(ax_dir, dat_filename)
+        for dat_filename in fnmatch.filter(os.listdir(ax_dir), "*.dat")}
+
+
+@pytest.mark.parametrize("filename", dats.values(), ids=dats.keys())
+def test_from_file(filename: str):
+    dat = ion_storm.Dat.from_file(filename)
+    namelist = dat.namelist()
+    assert isinstance(namelist, list), ".namelist() failed"
+    if len(namelist) != 0:
+        first_file = dat.read(namelist[0])
+        assert isinstance(first_file, bytes), ".read() failed"