use "not logs" instead of "logs is None"

see plotly/dash#2712

Author: tschaume

crystal_toolkit/apps/examples/tests/test_bandstructure.py

@@ -32,4 +32,4 @@ def test_bs(dash_duo: DashDuo) -> None:
     # dash_duo.percy_snapshot("example_bsdos_projection_index_2")
 
     logs = dash_duo.get_logs()
-    assert logs is None, f"Unexpected browser {logs=}"
+    assert not logs, f"Unexpected browser {logs=}"

crystal_toolkit/apps/examples/tests/test_basic.py

@@ -22,7 +22,7 @@ def test_hello_scientist(dash_duo: DashDuo):
     dash_duo.percy_snapshot("hello_scientist")
 
     logs = dash_duo.get_logs()
-    assert logs is None, f"Unexpected browser {logs=}"
+    assert not logs, f"Unexpected browser {logs=}"
 
 
 def test_hello_structure(dash_duo: DashDuo) -> None:
@@ -33,7 +33,7 @@ def test_hello_structure(dash_duo: DashDuo) -> None:
     dash_duo.percy_snapshot("hello_structure")
 
     logs = dash_duo.get_logs()
-    assert logs is None, f"Unexpected browser {logs=}"
+    assert not logs, f"Unexpected browser {logs=}"
 
 
 def test_hello_structure_interactive(dash_duo: DashDuo) -> None:
@@ -47,4 +47,4 @@ def test_hello_structure_interactive(dash_duo: DashDuo) -> None:
     dash_duo.percy_snapshot("hello_structure_interactive_on_click")
 
     logs = dash_duo.get_logs()
-    assert logs is None, f"Unexpected browser {logs=}"
+    assert not logs, f"Unexpected browser {logs=}"

crystal_toolkit/apps/examples/tests/test_diffraction.py

@@ -31,4 +31,4 @@ def test_diffraction(dash_duo: DashDuo) -> None:
     input_nodes[0].send_keys(Keys.ARROW_UP)
 
     logs = dash_duo.get_logs()
-    assert logs is None, f"Unexpected browser {logs=}"
+    assert not logs, f"Unexpected browser {logs=}"

crystal_toolkit/apps/examples/tests/test_fermi_surface.py

@@ -17,4 +17,4 @@ def test_diffraction(dash_duo: DashDuo) -> None:
     assert "dash-graph" in node.get_attribute("class")
 
     logs = dash_duo.get_logs()
-    assert logs is None, f"Unexpected browser {logs=}"
+    assert not logs, f"Unexpected browser {logs=}"

crystal_toolkit/apps/examples/tests/test_structure.py

@@ -36,4 +36,4 @@ def test_structure(dash_duo: DashDuo) -> None:
     sleep(1)
 
     logs = dash_duo.get_logs()
-    assert logs is None, f"Unexpected browser {logs=}"
+    assert not logs, f"Unexpected browser {logs=}"