Merge remote-tracking branch 'upstream/component-8byte-optimization' into integration

tests/components/tm1637/common.yaml

@@ -5,3 +5,5 @@ display:
     intensity: 3
     lambda: |-
       it.print("1234");
+      static const uint8_t buf[] = {0x3f, 0x06, 0x5b, 0x4f | 0x80};
+      it.set_buffer(buf, sizeof(buf));

tests/unit_tests/test_cpp_helpers.py

@@ -82,12 +82,14 @@ async def test_register_component__with_setup_priority(monkeypatch):
     assert core_mock.component_ids == []
 
 
-def test_register_component_source_empty_name(monkeypatch):
+def test_register_component_source_empty_name(monkeypatch: pytest.MonkeyPatch) -> None:
     monkeypatch.setattr(ch, "CORE", Mock(data={}))
     assert register_component_source("") == 0
 
 
-def test_register_component_source_deduplicates(monkeypatch):
+def test_register_component_source_deduplicates(
+    monkeypatch: pytest.MonkeyPatch,
+) -> None:
     monkeypatch.setattr(ch, "CORE", Mock(data={}))
     idx1 = register_component_source("wifi")
     idx2 = register_component_source("api")
@@ -97,13 +99,42 @@ def test_register_component_source_deduplicates(monkeypatch):
     assert idx3 == 1  # deduplicated
 
 
-def test_generate_source_table_code_empty():
+def test_generate_source_table_code_empty() -> None:
     from esphome.cpp_helpers import _generate_source_table_code
 
     assert _generate_source_table_code("TBL", "lookup", {}) == ""
 
 
-def test_register_component_source_overflow_warns(monkeypatch, caplog):
+def test_generate_source_table_code_non_empty() -> None:
+    from esphome.cpp_helpers import _generate_source_table_code
+
+    code = _generate_source_table_code("TBL", "lookup", {"wifi": 1, "api": 2})
+    assert "PROGMEM" in code
+    assert "wifi" in code
+    assert "api" in code
+    assert "lookup" in code
+    assert "index == 0" in code
+    assert "progmem_read_ptr" in code
+    assert "index > 2" in code
+
+
+@pytest.mark.asyncio
+async def test_generate_component_source_table_empty_pool(
+    monkeypatch: pytest.MonkeyPatch,
+) -> None:
+    """Test that _generate_component_source_table does nothing with an empty pool."""
+    from esphome.cpp_helpers import _generate_component_source_table
+
+    monkeypatch.setattr(ch, "CORE", Mock(data={}))
+    add_global_mock = Mock()
+    monkeypatch.setattr(ch, "add_global", add_global_mock)
+    await _generate_component_source_table()
+    add_global_mock.assert_not_called()
+
+
+def test_register_component_source_overflow_warns(
+    monkeypatch: pytest.MonkeyPatch, caplog: pytest.LogCaptureFixture
+) -> None:
     # Pre-fill pool to max
     pool = ComponentSourcePool(
         sources={f"comp_{i}": i + 1 for i in range(0xFF)},