add test for appsettings.update_extents()

Author: mozman

integration_tests/test_appsettings.py

@@ -0,0 +1,24 @@
+#  Copyright (c) 2023, Manfred Moitzi
+#  License: MIT License
+
+import pytest
+import ezdxf
+from ezdxf import appsettings
+from ezdxf.math import Vec3
+
+
+def test_update_extents():
+    doc = ezdxf.new()
+    msp = doc.modelspace()
+    msp.add_line((0, 0), (7, 8, 9))
+    appsettings.update_extents(doc)
+
+    assert msp.dxf.extmin.isclose((0, 0))
+    assert msp.dxf.extmax.isclose((7, 8, 9))
+
+    assert Vec3(0, 0).isclose(doc.header["$EXTMIN"])
+    assert Vec3(7, 8, 9).isclose(doc.header["$EXTMAX"])
+
+
+if __name__ == "__main__":
+    pytest.main([__file__])