Fix test

homeassistant/components/kitchen_sink/config_flow.py

@@ -70,6 +70,7 @@ class OptionsFlowHandler(OptionsFlow):
         if user_input is not None:
             return self.async_create_entry(data=self.config_entry.options | user_input)
 
+        section_1 = self.config_entry.options.get("section_1", {})
         return self.async_show_form(
             step_id="options_1",
             data_schema=vol.Schema(
@@ -79,17 +80,36 @@ class OptionsFlowHandler(OptionsFlow):
                             {
                                 vol.Optional(
                                     CONF_BOOLEAN,
-                                    default=self.config_entry.options.get(
-                                        CONF_BOOLEAN, False
-                                    ),
+                                    default=section_1.get(CONF_BOOLEAN, False),
                                 ): bool,
                                 vol.Optional(
                                     CONF_INT,
-                                    default=self.config_entry.options.get(CONF_INT, 10),
+                                    default=section_1.get(CONF_INT, 10),
                                 ): int,
                             }
                         ),
-                        {"collapsed": False},
+                        {
+                            "collapsed": False,
+                        },
+                    ),
+                    vol.Required("section_2"): data_entry_flow.section(
+                        vol.Schema(
+                            {
+                                vol.Optional(
+                                    "a",
+                                    default=2,
+                                ): int,
+                                vol.Optional(
+                                    "b",
+                                    default=4,
+                                ): int,
+                            }
+                        ),
+                        {
+                            "collapsed": False,
+                            "multiple": True,
+                            "default": self.config_entry.options.get("section_2", []),
+                        },
                     ),
                 }
             ),

homeassistant/components/kitchen_sink/strings.json

@@ -23,6 +23,14 @@
             },
             "description": "This section allows input of some extra data",
             "name": "Collapsible section"
+          },
+          "section_2": {
+            "data": {
+              "a": "A",
+              "b": "B"
+            },
+            "description": "Some datapoints",
+            "name": "Data point"
           }
         },
         "submit": "Save!"

homeassistant/data_entry_flow.py

@@ -908,6 +908,8 @@ class SectionConfig(TypedDict, total=False):
     """Class to represent a section config."""
 
     collapsed: bool
+    multiple: bool
+    default: list[dict[str, Any]]
 
 
 class section:
@@ -916,6 +918,8 @@ class section:
     CONFIG_SCHEMA = vol.Schema(
         {
             vol.Optional("collapsed", default=False): bool,
+            vol.Optional("multiple", default=False): bool,
+            vol.Optional("default"): list[dict[str, Any]],
         },
     )
 
@@ -928,7 +932,11 @@ class section:
 
     def __call__(self, value: Any) -> Any:
         """Validate input."""
-        return self.schema(value)
+        if not self.options.get("multiple"):
+            return self.schema(value)
+        if not isinstance(value, list):
+            raise vol.Invalid("Value should be a list")
+        return [vol.Schema(dict)(val) for val in value]
 
 
 # These can be removed if no deprecated constant are in this module anymore

homeassistant/helpers/config_validation.py

@@ -1136,7 +1136,7 @@ def _custom_serializer(schema: Any, *, allow_section: bool) -> Any:
     if isinstance(schema, data_entry_flow.section):
         if not allow_section:
             raise ValueError("Nesting expandable sections is not supported")
-        return {
+        section_schema = {
             "type": "expandable",
             "schema": voluptuous_serialize.convert(
                 schema.schema,
@@ -1145,7 +1145,11 @@ def _custom_serializer(schema: Any, *, allow_section: bool) -> Any:
                 ),
             ),
             "expanded": not schema.options["collapsed"],
+            "multiple": schema.options["multiple"],
         }
+        if schema.options["multiple"]:
+            section_schema["default"] = schema.options["default"]
+        return section_schema
 
     if isinstance(schema, multi_select):
         return {"type": "multi_select", "options": schema.options}

tests/components/kitchen_sink/test_config_flow.py

@@ -98,9 +98,39 @@ async def test_options_flow(hass: HomeAssistant) -> None:
 
     result = await hass.config_entries.options.async_configure(
         result["flow_id"],
-        user_input={"section_1": {"bool": True, "int": 15}},
+        user_input={
+            "section_1": {
+                "bool": True,
+                "int": 15,
+            },
+            "section_2": [
+                {
+                    "a": 2,
+                    "b": 4,
+                },
+                {
+                    "a": 5,
+                    "b": 7,
+                },
+            ],
+        },
     )
     assert result["type"] is FlowResultType.CREATE_ENTRY
-    assert config_entry.options == {"section_1": {"bool": True, "int": 15}}
+    assert config_entry.options == {
+        "section_1": {
+            "bool": True,
+            "int": 15,
+        },
+        "section_2": [
+            {
+                "a": 2,
+                "b": 4,
+            },
+            {
+                "a": 5,
+                "b": 7,
+            },
+        ],
+    }
 
     await hass.async_block_till_done()

tests/test_data_entry_flow.py

@@ -1020,6 +1020,36 @@ def test_section_in_serializer() -> None:
             {"name": "option_2", "required": True, "type": "integer"},
         ],
         "type": "expandable",
+        "multiple": False,
+    }
+
+
+def test_section_multiple_in_serializer() -> None:
+    """Test section with multiple with custom_serializer."""
+    assert cv.custom_serializer(
+        data_entry_flow.section(
+            vol.Schema(
+                {
+                    vol.Optional("option_1", default=False): bool,
+                    vol.Required("option_2"): int,
+                }
+            ),
+            {"collapsed": False, "multiple": True, "default": [{True, 10}]},
+        )
+    ) == {
+        "expanded": True,
+        "schema": [
+            {"default": False, "name": "option_1", "optional": True, "type": "boolean"},
+            {"name": "option_2", "required": True, "type": "integer"},
+        ],
+        "type": "expandable",
+        "multiple": True,
+        "default": [
+            {
+                True,
+                10,
+            },
+        ],
     }