Add an integration test for edit.format.

pkg/analysis_server/test/integration/test_all.dart

Index: pkg/analysis_server/test/integration/test_all.dart
diff --git a/pkg/analysis_server/test/integration/test_all.dart b/pkg/analysis_server/test/integration/test_all.dart
index 69ba9bcccc2d412bd103800bae935c5cfef3294d..6fb5ad14c00815c1e0a246de576c92c8821eda78 100644
--- a/pkg/analysis_server/test/integration/test_all.dart
+++ b/pkg/analysis_server/test/integration/test_all.dart
@@ -10,6 +10,7 @@ import 'analysis/test_all.dart' as analysis_test_all;
 import 'completion/test_all.dart' as completion_test_all;
 import 'coverage_test.dart' as coverage_test;
 import 'diagnostic/test_all.dart' as diagnostic_test_all;
+import 'edit/test_all.dart' as edit_test_all;
 import 'execution/test_all.dart' as execution_test_all;
 import 'search/test_all.dart' as search_test_all;
 import 'server/test_all.dart' as server_test_all;
@@ -22,6 +23,7 @@ main() {
     analysis_test_all.main();
     completion_test_all.main();
     diagnostic_test_all.main();
+    edit_test_all.main();
     execution_test_all.main();
     search_test_all.main();
     server_test_all.main();