Update HoverInformation to include offset, length, kind.

pkg/analysis_server/test/analysis_hover_test.dart

 // Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library test.domain.analysis.hover;
 
 import 'dart:async';
 
 import 'package:analysis_server/src/computer/computer_hover.dart';
 import 'package:analysis_server/src/constants.dart';
@@ skipping 77 matching lines @@
 /// doc bbb
 List<String> fff(int a, String b) {
 }
 ''');
     return prepareHover('fff(int a', () {
       // element
       expect(hover.containingLibraryName, 'my.library');
       expect(hover.containingLibraryPath, testFile);
       expect(hover.dartDoc, '''doc aaa\ndoc bbb''');
       expect(hover.elementDescription, 'fff(int a, String b) → List<String>');
+      expect(hover.elementKind, 'function');
       // types
       expect(hover.staticType, '(int, String) → List<String>');
       expect(hover.propagatedType, isNull);
       // no parameter
       expect(hover.parameter, isNull);
     });
   }
 
   test_expression_literal_noElement() {
     addTestFile('''
 main() {
   foo(123);
 }
 foo(Object myParameter) {}
 ''');
     return prepareHover('123', () {
       // literal, no Element
       expect(hover.elementDescription, isNull);
+      expect(hover.elementKind, isNull);
       // types
       expect(hover.staticType, 'int');
       expect(hover.propagatedType, isNull);
       // parameter
       expect(hover.parameter, 'Object myParameter');
     });
   }
 
   test_expression_method() {
     addTestFile('''
 library my.library;
 class A {
   /// doc aaa
   /// doc bbb
   List<String> mmm(int a, String b) {
   }
 }
 ''');
     return prepareHover('mmm(int a', () {
       // element
       expect(hover.containingLibraryName, 'my.library');
       expect(hover.containingLibraryPath, testFile);
       expect(hover.dartDoc, '''doc aaa\ndoc bbb''');
       expect(hover.elementDescription, 'A.mmm(int a, String b) → List<String>');
+      expect(hover.elementKind, 'method');
       // types
       expect(hover.staticType, '(int, String) → List<String>');
       expect(hover.propagatedType, isNull);
       // no parameter
       expect(hover.parameter, isNull);
     });
   }
 
+  test_expression_method_nvocation() {
+    addTestFile('''
+library my.library;
+class A {
+  List<String> mmm(int a, String b) {
+  }
+}
+main(A a) {
+  a.mmm(42, 'foo');
+}
+''');
+    return prepareHover('mm(42, ', () {
+      // range
+      expect(hover.offset, findOffset('mmm(42, '));
+      expect(hover.length, 'mmm'.length);
+      // element
+      expect(hover.containingLibraryName, 'my.library');
+      expect(hover.containingLibraryPath, testFile);
+      expect(hover.elementDescription, 'A.mmm(int a, String b) → List<String>');
+      expect(hover.elementKind, 'method');
+      // types
+      expect(hover.staticType, isNull);
+      expect(hover.propagatedType, isNull);
+      // no parameter
+      expect(hover.parameter, isNull);
+    });
+  }
+
   test_expression_syntheticGetter() {
     addTestFile('''
 library my.library;
 class A {
   /// doc aaa
   /// doc bbb
   String fff;
 }
 main(A a) {
   print(a.fff);
 }
 ''');
     return prepareHover('fff);', () {
       // element
       expect(hover.containingLibraryName, 'my.library');
       expect(hover.containingLibraryPath, testFile);
       expect(hover.dartDoc, '''doc aaa\ndoc bbb''');
       expect(hover.elementDescription, 'String fff');
+      expect(hover.elementKind, 'field');
       // types
       expect(hover.staticType, 'String');
       expect(hover.propagatedType, isNull);
     });
   }
 
   test_expression_variable_hasPropagatedType() {
     addTestFile('''
 library my.library;
 main() {
   var vvv = 123;
   print(vvv);
 }
 ''');
     return prepareHover('vvv);', () {
       // element
       expect(hover.containingLibraryName, 'my.library');
       expect(hover.containingLibraryPath, testFile);
       expect(hover.dartDoc, isNull);
       expect(hover.elementDescription, 'dynamic vvv');
+      expect(hover.elementKind, 'local variable');
       // types
       expect(hover.staticType, 'dynamic');
       expect(hover.propagatedType, 'int');
     });
   }
 }