test: split embedding lane tests (#4389)

* test: split embedding lane tests

* test: preserve embedding focus selector after lane split

tests/test_run_focus.py

@@ -41,10 +41,24 @@ def test_sub_area_only_marker_expression():
     assert build_marker_expression(None, "cookbook") == "sub_cookbook"
 
 
+def test_embedding_sub_area_marker_expression_includes_memory_split():
+    assert (
+        build_marker_expression(None, "embedding")
+        == "(sub_embedding or sub_embedding_memory)"
+    )
+
+
 def test_area_and_sub_area_marker_expression():
     assert build_marker_expression("services", "cookbook") == "area_services and sub_cookbook"
 
 
+def test_area_and_embedding_sub_area_marker_expression_includes_memory_split():
+    assert (
+        build_marker_expression("services", "embedding")
+        == "area_services and (sub_embedding or sub_embedding_memory)"
+    )
+
+
 def test_no_selection_marker_expression_is_none():
     assert build_marker_expression(None, None) is None
 
@@ -75,6 +89,12 @@ def test_sub_area_only_command():
     assert _cmd(sub_area="cookbook") == [PY, "-m", "pytest", "-m", "sub_cookbook"]
 
 
+def test_embedding_sub_area_command_includes_memory_split():
+    assert _cmd(sub_area="embedding") == [
+        PY, "-m", "pytest", "-m", "(sub_embedding or sub_embedding_memory)",
+    ]
+
+
 def test_area_and_sub_area_command():
     assert _cmd(area="services", sub_area="cookbook") == [
         PY, "-m", "pytest", "-m", "area_services and sub_cookbook",
@@ -130,6 +150,13 @@ def test_fast_with_area_and_sub_area_command():
     ]
 
 
+def test_fast_with_embedding_sub_area_command_includes_memory_split():
+    assert _cmd(sub_area="embedding", fast=True) == [
+        PY, "-m", "pytest", "-m",
+        "(sub_embedding or sub_embedding_memory) and not slow",
+    ]
+
+
 def test_durations_appends_flag():
     assert _cmd(fast=True, durations=25) == [
         PY, "-m", "pytest", "-m", "not slow", "--durations=25",
@@ -252,6 +279,30 @@ def test_run_accepts_both_sub_area_forms(value):
     ]]
 
 
+def test_run_keeps_embedding_memory_selector_specific():
+    executor = _FakeExecutor()
+    run(["--sub-area", "embedding_memory"], executor=executor)
+    assert executor.calls == [[
+        sys.executable,
+        "-m",
+        "pytest",
+        "-m",
+        "sub_embedding_memory",
+    ]]
+
+
+def test_run_expands_embedding_selector_to_memory_split():
+    executor = _FakeExecutor()
+    run(["--sub-area", "embedding"], executor=executor)
+    assert executor.calls == [[
+        sys.executable,
+        "-m",
+        "pytest",
+        "-m",
+        "(sub_embedding or sub_embedding_memory)",
+    ]]
+
+
 def test_invalid_area_exits_with_error():
     with pytest.raises(SystemExit) as excinfo:
         run(["--area", "bogus"], executor=_FakeExecutor())