Add support for converting from server to plugin protocol objects

pkg/analysis_server/test/src/plugin/request_converter_test.dart

+// Copyright (c) 2017, 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.
+
+import 'package:analysis_server/plugin/protocol/protocol.dart' as server;
+import 'package:analysis_server/src/plugin/request_converter.dart';
+import 'package:analysis_server/src/protocol/protocol_internal.dart' as server;
+import 'package:analyzer_plugin/protocol/protocol_generated.dart' as plugin;
+import 'package:test/test.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'protocol_test_utilities.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(RequestConverterTest);
+  });
+}
+
+@reflectiveTest
+class RequestConverterTest extends ProtocolTestUtilities {
+  RequestConverter converter = new RequestConverter();
+
+  void test_convertAnalysisService() {
+    Map<plugin.AnalysisService, server.AnalysisService> kindMap =
+        <plugin.AnalysisService, server.AnalysisService>{
+      plugin.AnalysisService.FOLDING: server.AnalysisService.FOLDING,
+      plugin.AnalysisService.HIGHLIGHTS: server.AnalysisService.HIGHLIGHTS,
+      plugin.AnalysisService.NAVIGATION: server.AnalysisService.NAVIGATION,
+      plugin.AnalysisService.OCCURRENCES: server.AnalysisService.OCCURRENCES,
+      plugin.AnalysisService.OUTLINE: server.AnalysisService.OUTLINE,
+    };
+    kindMap.forEach(
+        (plugin.AnalysisService pluginKind, server.AnalysisService serverKind) {
+      expect(converter.convertAnalysisService(serverKind), pluginKind);
+    });
+  }
+
+  void test_convertFileOverlay_add() {
+    String content = 'content';
+    plugin.AddContentOverlay result =
+        converter.convertFileOverlay(new server.AddContentOverlay(content));
+    expect(result, isNotNull);
+    expect(result.content, content);
+  }
+
+  void test_convertFileOverlay_change() {
+    List<server.SourceEdit> serverEdits = <server.SourceEdit>[
+      new server.SourceEdit(10, 5, 'a'),
+      new server.SourceEdit(20, 6, 'b'),
+      new server.SourceEdit(30, 7, 'c'),
+    ];
+    plugin.ChangeContentOverlay result = converter
+        .convertFileOverlay(new server.ChangeContentOverlay(serverEdits));
+    expect(result, isNotNull);
+    List<plugin.SourceEdit> pluginEdits = result.edits;
+    int editCount = serverEdits.length;
+    expect(pluginEdits, hasLength(editCount));
+    for (int i = 0; i < editCount; i++) {
+      server.SourceEdit serverEdit = serverEdits[i];
+      plugin.SourceEdit pluginEdit = pluginEdits[i];
+      expect(pluginEdit.offset, serverEdit.offset);
+      expect(pluginEdit.length, serverEdit.length);
+      expect(pluginEdit.replacement, serverEdit.replacement);
+    }
+  }
+
+  void test_convertFileOverlay_remove() {
+    plugin.RemoveContentOverlay result =
+        converter.convertFileOverlay(new server.RemoveContentOverlay());
+    expect(result, isNotNull);
+  }
+
+  void test_convertSourceEdit() {
+    int offset = 5;
+    int length = 3;
+    String replacement = 'x';
+    plugin.SourceEdit result = converter
+        .convertSourceEdit(new server.SourceEdit(offset, length, replacement));
+    expect(result, isNotNull);
+    expect(result.offset, offset);
+    expect(result.length, length);
+    expect(result.replacement, replacement);
+  }
+}