Skip Textual app tests on wasm

Importing textual works on Pyodide, but instantiating an App selects a
terminal driver and the Linux driver needs termios, which Emscripten
does not provide.  Guard with blosc2.IS_WASM, like the other wasm
exclusions in the test suite.

Author: FrancescAlted

tests/b2view/test_basics.py

@@ -36,6 +36,13 @@
 pytest.importorskip("textual")
 pytest.importorskip("pytest_asyncio")
 
+import blosc2
+
+if blosc2.IS_WASM:
+    # Instantiating a Textual app selects a terminal driver, and the Linux
+    # driver needs termios, which Emscripten does not provide.
+    pytest.skip("Textual apps need a terminal driver (termios)", allow_module_level=True)
+
 import tree_store_gen as gen
 from textual.widgets import DataTable, Input, Tree
 

tests/test_b2view_model.py

@@ -128,6 +128,8 @@ def test_store_browser_uses_grid_preview_for_2d_ndarray(tmp_path):
 
 def test_ctable_preview_buffer_reuses_loaded_rows(tmp_path):
     pytest.importorskip("textual", reason="b2view TUI requires textual")
+    if blosc2.IS_WASM:
+        pytest.skip("instantiating a Textual app needs a terminal driver (termios)")
     path = tmp_path / "table.b2z"
     persistent = blosc2.CTable(Row, urlpath=str(path), mode="w")
     for i in range(100):