[mk2pvrouter] Add text_sensor platform (#19720)

Co-authored-by: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

esphome/components/mk2pvrouter/text_sensor/__init__.py

@@ -0,0 +1,27 @@
+import esphome.codegen as cg
+from esphome.components import text_sensor
+from esphome.const import CONF_ID, CONF_TAG
+from esphome.types import ConfigType
+
+from .. import (
+    CONF_MK2PVROUTER_ID,
+    MK2PVROUTER_LISTENER_SCHEMA,
+    mk2pvrouter_ns,
+    register_mk2pvrouter_listener,
+)
+
+Mk2PVRouterTextSensor = mk2pvrouter_ns.class_(
+    "Mk2PVRouterTextSensor", text_sensor.TextSensor, cg.Component
+)
+
+CONFIG_SCHEMA = text_sensor.text_sensor_schema(Mk2PVRouterTextSensor).extend(
+    MK2PVROUTER_LISTENER_SCHEMA
+)
+
+
+async def to_code(config: ConfigType) -> None:
+    var = cg.new_Pvariable(config[CONF_ID], config[CONF_TAG])
+    await cg.register_component(var, config)
+    await text_sensor.register_text_sensor(var, config)
+    mk2pvrouter = await cg.get_variable(config[CONF_MK2PVROUTER_ID])
+    await register_mk2pvrouter_listener(mk2pvrouter, var)

esphome/components/mk2pvrouter/text_sensor/mk2pvrouter_text_sensor.cpp

@@ -0,0 +1,17 @@
+#include "mk2pvrouter_text_sensor.h"
+#include "esphome/core/log.h"
+
+namespace esphome::mk2pvrouter {
+
+static const char *const TAG = "mk2pvrouter_text_sensor";
+
+Mk2PVRouterTextSensor::Mk2PVRouterTextSensor(const char *tag) : Mk2PVRouterListener(tag) {}
+
+void Mk2PVRouterTextSensor::publish_val(const char *val) { this->publish_state(val); }
+
+void Mk2PVRouterTextSensor::dump_config() {
+  LOG_TEXT_SENSOR("  ", "Mk2PVRouter Text Sensor", this);
+  ESP_LOGCONFIG(TAG, "  Tag: %s", this->get_tag());
+}
+
+}  // namespace esphome::mk2pvrouter

esphome/components/mk2pvrouter/text_sensor/mk2pvrouter_text_sensor.h

@@ -0,0 +1,15 @@
+#pragma once
+
+#include "esphome/components/mk2pvrouter/mk2pvrouter.h"
+#include "esphome/components/text_sensor/text_sensor.h"
+
+namespace esphome::mk2pvrouter {
+
+class Mk2PVRouterTextSensor final : public Mk2PVRouterListener, public text_sensor::TextSensor, public Component {
+ public:
+  explicit Mk2PVRouterTextSensor(const char *tag);
+  void publish_val(const char *val) override;
+  void dump_config() override;
+};
+
+}  // namespace esphome::mk2pvrouter

tests/components/mk2pvrouter/common.yaml

@@ -66,3 +66,15 @@ binary_sensor:
     name: Relay 2 Binary
     tag: R2
     mk2pvrouter_id: test_mk2pvrouter
+
+text_sensor:
+  - platform: mk2pvrouter
+    name: S per MC
+    tag: S_MC
+    mk2pvrouter_id: test_mk2pvrouter
+
+  # Test another text tag
+  - platform: mk2pvrouter
+    name: Status
+    tag: STATUS
+    mk2pvrouter_id: test_mk2pvrouter

tests/components/mk2pvrouter/text_sensor/mk2pvrouter_text_sensor_test.cpp

@@ -0,0 +1,21 @@
+#include <gtest/gtest.h>
+
+#include "esphome/components/mk2pvrouter/text_sensor/mk2pvrouter_text_sensor.h"
+
+namespace esphome::mk2pvrouter::testing {
+
+TEST(Mk2PVRouterTextSensorTest, PublishesValueVerbatim) {
+  Mk2PVRouterTextSensor sensor("S_MC");
+  sensor.publish_val("-1234");
+  ASSERT_TRUE(sensor.has_state());
+  EXPECT_EQ(sensor.get_state(), "-1234");
+}
+
+TEST(Mk2PVRouterTextSensorTest, ShorterValueReplacesPreviousOne) {
+  Mk2PVRouterTextSensor sensor("S_MC");
+  sensor.publish_val("-1234");
+  sensor.publish_val("5");
+  EXPECT_EQ(sensor.get_state(), "5");
+}
+
+}  // namespace esphome::mk2pvrouter::testing