Merge remote-tracking branch 'origin/dev' into apply-entities-output

# Conflicts:
#	tests/unit_tests/core/test_entity_helpers.py

esphome/components/output/__init__.py

@@ -13,7 +13,9 @@ from esphome.const import (
     CONF_MIN_POWER,
     CONF_POWER_SUPPLY,
 )
-from esphome.core import CORE
+from esphome.core import CORE, ID
+from esphome.core.entity_helpers import ApplyEntity, SubEntities
+from esphome.cpp_generator import MockObj, SafeExpType
 from esphome.types import ConfigType
 
 CODEOWNERS = ["@esphome/core"]
@@ -54,6 +56,8 @@ BinaryOutput = output_ns.class_("BinaryOutput")
 BinaryOutputPtr = BinaryOutput.operator("ptr")
 FloatOutput = output_ns.class_("FloatOutput", BinaryOutput)
 FloatOutputPtr = FloatOutput.operator("ptr")
+ApplyBinaryOutput = output_ns.class_("ApplyBinaryOutput", BinaryOutput)
+ApplyFloatOutput = output_ns.class_("ApplyFloatOutput", FloatOutput)
 
 
 async def setup_output_platform_(obj, config):
@@ -84,6 +88,39 @@ async def register_output(var, config):
     await setup_output_platform_(var, config)
 
 
+async def new_output(config: ConfigType, *args: SafeExpType) -> MockObj:
+    var = cg.new_Pvariable(config[CONF_ID], *args)
+    await register_output(var, config)
+    return var
+
+
+BINARY_APPLY_ENTITY = ApplyEntity(
+    ApplyBinaryOutput,
+    ((BinaryOutputPtr, "entity"), (cg.uint16, "index"), (cg.bool_, "state")),
+)
+FLOAT_APPLY_ENTITY = ApplyEntity(
+    ApplyFloatOutput,
+    ((FloatOutputPtr, "entity"), (cg.uint16, "index"), (cg.float_, "state")),
+)
+
+
+def sub_binary_outputs(
+    config: ConfigType, *, parent: MockObj | ID | None = None
+) -> SubEntities:
+    """Return a SubEntities bound to new_output; ``apply`` can use ``entity``, ``index`` and ``state``.
+
+    ``index`` is the constructor argument (default 0), so a hub's channels share one class.
+    """
+    return SubEntities(new_output, config, parent, BINARY_APPLY_ENTITY)
+
+
+def sub_float_outputs(
+    config: ConfigType, *, parent: MockObj | ID | None = None
+) -> SubEntities:
+    """Like sub_binary_outputs; ``apply`` gets the scaled level as ``state``."""
+    return SubEntities(new_output, config, parent, FLOAT_APPLY_ENTITY)
+
+
 BINARY_OUTPUT_ACTION_SCHEMA = maybe_simple_id(
     {
         cv.Required(CONF_ID): cv.use_id(BinaryOutput),

esphome/components/output/binary_output.h

@@ -68,4 +68,16 @@ class BinaryOutput {
 #endif
 };
 
+/// Calls the codegen-generated Fn(this, index, state) on a state write; the hub is baked into Fn.
+/// The index (a hub's channel) is data, so all channels of a hub share one instantiation.
+template<auto Fn> class ApplyBinaryOutput final : public BinaryOutput {
+ public:
+  explicit ApplyBinaryOutput(uint16_t index = 0) : index_(index) {}
+
+ protected:
+  void write_state(bool state) override { Fn(this, this->index_, state); }
+
+  uint16_t index_;  // Fits in the base's tail padding
+};
+
 }  // namespace esphome::output

esphome/components/output/float_output.h

@@ -130,4 +130,16 @@ class FloatOutput : public BinaryOutput {
 #endif
 };
 
+/// Calls the codegen-generated Fn(this, index, state) with the scaled, inverted level; the hub is baked into Fn.
+/// The index (a hub's channel) is data, so all channels of a hub share one instantiation.
+template<auto Fn> class ApplyFloatOutput final : public FloatOutput {
+ public:
+  explicit ApplyFloatOutput(uint16_t index = 0) : index_(index) {}
+
+ protected:
+  void write_state(float state) override { Fn(this, this->index_, state); }
+
+  uint16_t index_;  // Fits in the base's tail padding
+};
+
 }  // namespace esphome::output

tests/components/output/__init__.py

@@ -0,0 +1,11 @@
+import esphome.codegen as cg
+from esphome.types import ConfigType
+from tests.testing_helpers import ComponentManifestOverride
+
+
+def override_manifest(manifest: ComponentManifestOverride) -> None:
+    # Builds the min/max power scaling so the Apply output tests cover it
+    async def to_code_testing(config: ConfigType) -> None:
+        cg.add_define("USE_OUTPUT_FLOAT_POWER_SCALING")
+
+    manifest.to_code = to_code_testing

tests/components/output/apply_output_test.cpp

@@ -0,0 +1,81 @@
+#include <gtest/gtest.h>
+
+#include <vector>
+
+#include "esphome/components/output/binary_output.h"
+#include "esphome/components/output/float_output.h"
+
+namespace esphome::output::testing {
+
+static void *last_output = nullptr;    // NOLINT(cppcoreguidelines-avoid-non-const-global-variables)
+static uint16_t last_index = 0;        // NOLINT(cppcoreguidelines-avoid-non-const-global-variables)
+static std::vector<bool> bool_writes;  // NOLINT(cppcoreguidelines-avoid-non-const-global-variables)
+static std::vector<float> levels;      // NOLINT(cppcoreguidelines-avoid-non-const-global-variables)
+
+static void on_binary_write(BinaryOutput *output, uint16_t index, bool state) {
+  last_output = output;
+  last_index = index;
+  bool_writes.push_back(state);
+}
+
+static void on_float_write(FloatOutput *output, uint16_t index, float state) {
+  last_output = output;
+  last_index = index;
+  levels.push_back(state);
+}
+
+// The index sits in the base's tail padding; only the power supply requester leaves none.
+#ifndef USE_POWER_SUPPLY
+static_assert(sizeof(ApplyBinaryOutput<on_binary_write>) == sizeof(BinaryOutput));
+static_assert(sizeof(ApplyFloatOutput<on_float_write>) == sizeof(FloatOutput));
+#endif
+
+static void reset() {
+  last_output = nullptr;
+  last_index = 0;
+  bool_writes.clear();
+  levels.clear();
+}
+
+TEST(ApplyBinaryOutput, WritesReachTheFunctionWithIndexAndInversion) {
+  reset();
+  ApplyBinaryOutput<on_binary_write> out(7);
+  out.turn_on();
+  out.turn_off();
+  out.set_inverted(true);
+  out.turn_on();
+  EXPECT_EQ(bool_writes, (std::vector<bool>{true, false, false}));
+  EXPECT_EQ(last_output, &out);
+  EXPECT_EQ(last_index, 7);
+}
+
+TEST(ApplyFloatOutput, WritesReachTheFunctionWithIndexInversionAndClamp) {
+  reset();
+  ApplyFloatOutput<on_float_write> out(3);
+  out.set_level(0.25f);
+  out.turn_on();
+  out.set_inverted(true);
+  out.set_level(0.25f);
+  out.set_level(2.0f);
+  EXPECT_EQ(levels, (std::vector<float>{0.25f, 1.0f, 0.75f, 0.0f}));
+  EXPECT_EQ(last_output, &out);
+  EXPECT_EQ(last_index, 3);
+}
+
+#ifdef USE_OUTPUT_FLOAT_POWER_SCALING
+TEST(ApplyFloatOutput, PowerScalingIsAppliedBeforeTheFunction) {
+  reset();
+  ApplyFloatOutput<on_float_write> out;
+  out.set_min_power(0.2f);
+  out.set_max_power(0.8f);
+  out.set_zero_means_zero(true);
+  out.set_level(0.5f);
+  out.turn_off();
+  ASSERT_EQ(levels.size(), 2u);
+  EXPECT_FLOAT_EQ(levels[0], 0.5f);
+  EXPECT_EQ(levels[1], 0.0f);
+  EXPECT_EQ(last_index, 0);
+}
+#endif
+
+}  // namespace esphome::output::testing

tests/unit_tests/core/test_entity_helpers.py

@@ -9,7 +9,7 @@ import pytest
 
 from esphome import final_validate as fv
 import esphome.codegen as cg
-from esphome.components import button, number, select, switch
+from esphome.components import button, number, output, select, switch
 from esphome.config import Config
 from esphome.config_validation import Invalid
 from esphome.const import (
@@ -1466,6 +1466,30 @@ async def test_sub_entities_apply_shares_equal_functions(
     ]
 
 
+@pytest.mark.asyncio
+async def test_sub_outputs_share_one_function_per_hub(
+    setup_test_environment: list[str], apply_functions: list[tuple[str, str, str]]
+) -> None:
+    """A hub's channels pass their channel as the index, so they share one function."""
+    calls: list[tuple[Any, ...]] = []
+    cls = output.ApplyFloatOutput
+    config = {"a": _apply_conf("ch0", cls), "b": _apply_conf("ch5", cls)}
+    sub = _apply_sub(calls, config, output.FLOAT_APPLY_ENTITY)
+    await sub("a", None, 0, apply="write_channel(index, state)")
+    await sub("b", None, 5, apply="write_channel(index, state)")
+    assert calls == [
+        ("ch0", "<esphome__ch0__fn>", "0"),
+        ("ch5", "<esphome__ch0__fn>", "5"),
+    ]
+    assert apply_functions == [
+        (
+            "esphome__ch0__fn",
+            "output::FloatOutput * entity, uint16_t index, float state",
+            "::hub->write_channel(index, state);",
+        )
+    ]
+
+
 @pytest.mark.asyncio
 async def test_sub_entities_apply_parent_id(
     monkeypatch: pytest.MonkeyPatch,
@@ -1567,6 +1591,18 @@ async def test_sub_entities_apply_needs_parent(
             "select::Select * entity, size_t index",
             "entity->publish_state(index);",
         ),
+        (
+            output.sub_binary_outputs,
+            output.ApplyBinaryOutput,
+            "output::BinaryOutput * entity, uint16_t index, bool state",
+            None,
+        ),
+        (
+            output.sub_float_outputs,
+            output.ApplyFloatOutput,
+            "output::FloatOutput * entity, uint16_t index, float state",
+            None,
+        ),
     ],
 )
 def test_domain_apply_entities(