Write type parameters when writing members (issue 29714)

pkg/analysis_server/test/analysis/get_hover_test.dart

Index: pkg/analysis_server/test/analysis/get_hover_test.dart
diff --git a/pkg/analysis_server/test/analysis/get_hover_test.dart b/pkg/analysis_server/test/analysis/get_hover_test.dart
index 80dfa9141a8c9499b1b469d834245a1ba48b6d4b..64cb212a4ea36417c36d7ec1061ef032bbd4daf3 100644
--- a/pkg/analysis_server/test/analysis/get_hover_test.dart
+++ b/pkg/analysis_server/test/analysis/get_hover_test.dart
@@ -283,6 +283,38 @@ main(A a) {
     expect(hover.parameter, isNull);
   }
 
+  test_expression_method_invocation_genericMethod() async {
+    addTestFile('''
+library my.library;
+
+abstract class Stream<T> {
+  Stream<S> transform<S>(StreamTransformer<T, S> streamTransformer);
+}
+abstract class StreamTransformer<T, S> {}
+
+f(Stream<int> s) {
+  s.transform(null);
+}
+''');
+    HoverInformation hover = await prepareHover('nsform(n');
+    // range
+    expect(hover.offset, findOffset('transform(n'));
+    expect(hover.length, 'transform'.length);
+    // element
+    expect(hover.containingLibraryName, 'my.library');
+    expect(hover.containingLibraryPath, testFile);
+    expect(hover.elementDescription,
+        'Stream.transform<S>(StreamTransformer<int, S> streamTransformer) → Stream<S>');
+    expect(hover.elementKind, 'method');
+    expect(hover.isDeprecated, isFalse);
+    // types
+    expect(hover.staticType,
+        '(StreamTransformer<int, dynamic>) → Stream<dynamic>');
+    expect(hover.propagatedType, isNull);
+    // no parameter
+    expect(hover.parameter, isNull);
+  }
+
   test_expression_parameter() async {
     addTestFile('''
 library my.library;