more test fixes

Author: felangel

bricks/dart_frog_prod_server/hooks/test/pre_gen_test.dart

@@ -174,12 +174,18 @@ void main() {
       File(
         path.join(directory.path, 'pubspec.yaml'),
       ).writeAsStringSync(workspaceRoot);
+      final server = Directory(
+        path.join(directory.path, 'server'),
+      )..createSync();
+      File(
+        path.join(server.path, 'pubspec.yaml'),
+      ).writeAsStringSync(workspaceChild);
       final exitCalls = <int>[];
       await pre_gen.preGen(
         context,
         buildConfiguration: (_) => configuration,
         exit: exitCalls.add,
-        directory: directory,
+        directory: server,
         runProcess: successRunProcess,
         copyPath: (_, __) async {},
       );

bricks/dart_frog_prod_server/hooks/test/pubspecs.dart

@@ -63,8 +63,16 @@ dev_dependencies:
 const workspaceRoot = '''
 name: _
 dependencies:
-  foo:
-    path: packages/foo  
+  server:
+    path: packages/server  
 workspace:
-  - packages/foo
+  - packages/server
+''';
+
+/// An artificially crafted `pubspec.yaml` file with:
+///
+/// * Dart workspaces enabled
+const workspaceChild = '''
+name: server
+resolution: workspace
 ''';