address comments

.github/workflows/download_asset.yaml → .github/workflows/package_download_asset.yaml

@@ -1,4 +1,6 @@
-name: download_asset
+# A workflow that goes together with the example package:download_asset inside
+# package:native_assets_cli.
+name: package_download_asset
 
 permissions:
   contents: write
@@ -7,7 +9,7 @@ on:
   pull_request:
     branches: [ main ]
     paths:
-      - .github/workflows/download_asset.yaml
+      - .github/workflows/package_download_asset.yaml
       - pkgs/native_assets_cli/example/build/download_asset/
   push:
     tags:

pkgs/native_assets_cli/example/build/download_asset/README.md

@@ -10,6 +10,6 @@ Run tests with `dart --enable-experiment=native-assets test`.
 A typical layout of a package which downloads assets:
 
 * `tool/build.dart` prebuilts assets and is exercised from a GitHub workflow.
-* A [github workflow](../../../../../.github/workflows/native.yaml) that builds assets.
+* A [GitHub workflow](../../../../../.github/workflows/package_download_asset.yaml) that builds assets.
 * `hook/build.dart` downloads the prebuilt assets.
 * `lib/` contains Dart code which uses the assets.

pkgs/native_assets_cli/example/build/download_asset/hook/build.dart

@@ -38,7 +38,8 @@ void main(List<String> args) async {
         iOSSdk?.type,
       )];
       if (fileHash != expectedHash) {
-        throw Exception('File $file was not downloaded correctly.');
+        throw Exception('File $file was not downloaded correctly. '
+            'Found hash $fileHash, expected $expectedHash.');
       }
       output.assets.code.add(CodeAsset(
         package: input.packageName,