[packages] Allow list instead of dict for packages (#8688)

tests/component_tests/packages/test_packages.py

@@ -76,10 +76,11 @@ def test_package_unused(basic_esphome, basic_wifi):
 
 def test_package_invalid_dict(basic_esphome, basic_wifi):
     """
-    Ensures an error is raised if packages is not valid.
+    If a url: key is present, it's expected to be well-formed remote package spec. Ensure an error is raised if not.
+    Any other simple dict passed as a package will be merged as usual but may fail later validation.
 
     """
-    config = {CONF_ESPHOME: basic_esphome, CONF_PACKAGES: basic_wifi}
+    config = {CONF_ESPHOME: basic_esphome, CONF_PACKAGES: basic_wifi | {CONF_URL: ""}}
 
     with pytest.raises(cv.Invalid):
         do_packages_pass(config)

tests/components/packages/package.yaml

@@ -0,0 +1,3 @@
+sensor:
+  - platform: template
+    id: package_sensor

tests/components/packages/test.esp32-ard.yaml

@@ -0,0 +1,11 @@
+packages:
+  - sensor:
+      - platform: template
+        id: inline_sensor
+  - !include package.yaml
+  - github://esphome/esphome/tests/components/template/common.yaml@dev
+  - url: https://github.com/esphome/esphome
+    file: tests/components/binary_sensor_map/common.yaml
+    ref: dev
+    refresh: 1d
+

tests/components/packages/test.esp32-idf.yaml

@@ -0,0 +1,13 @@
+packages:
+  sensor:
+    sensor:
+      - platform: template
+        id: inline_sensor
+  local: !include package.yaml
+  shorthand: github://esphome/esphome/tests/components/template/common.yaml@dev
+  github:
+    url: https://github.com/esphome/esphome
+    file: tests/components/binary_sensor_map/common.yaml
+    ref: dev
+    refresh: 1d
+