Integration tests for analysis.updateContent.

pkg/analysis_server/test/integration/analysis_domain_int_test.dart

Index: pkg/analysis_server/test/integration/analysis_domain_int_test.dart
diff --git a/pkg/analysis_server/test/integration/analysis_domain_int_test.dart b/pkg/analysis_server/test/integration/analysis_domain_int_test.dart
index 22881a5e8aeb191facaccb6bffc0c8c141ebf368..f744c1d979329d6d922cb7a3c5620142ecb41fe9 100644
--- a/pkg/analysis_server/test/integration/analysis_domain_int_test.dart
+++ b/pkg/analysis_server/test/integration/analysis_domain_int_test.dart
@@ -172,11 +172,10 @@ main() {
   Future getErrorsTest(bool afterAnalysis) {
     String filename = 'test.dart';
     String pathname = normalizePath(filename);
-    String text =
-        r'''
-    main() {
-      var x // parse error: missing ';'
-    }''';
+    String text = r'''
+main() {
+  var x // parse error: missing ';'
+}''';
     writeFile(filename, text);
     setAnalysisRoots(['']);
     Future finishTest() {
@@ -193,6 +192,64 @@ main() {
       return finishTest();
     }
   }
+
+  test_updateContent_content_only() {
+    return updateContentTest(false);
+  }
+
+  test_updateContent_including_offset_and_lengths() {
+    return updateContentTest(true);
+  }
+
+  Future updateContentTest(bool includeOffsetAndLengths) {
+    String filename = 'test.dart';
+    String pathname = normalizePath(filename);
+    String goodText = r'''
+main() {
+  print("Hello, world!");
+}''';
+    String badText = goodText.replaceAll(';', '');
+    writeFile(filename, badText);
+    setAnalysisRoots(['']);
+    return analysisFinished.then((_) {
+      // The contents on disk (badText) are missing a semicolon.
+      expect(currentAnalysisErrors[pathname], isNot(isEmpty));
+      var contentChange = {
+        'content': goodText
+      };
+      if (includeOffsetAndLengths) {
+        contentChange['offset'] = goodText.indexOf(';');
+        contentChange['oldLength'] = 0;
+        contentChange['newLength'] = 1;
+      }
+      return server.send(ANALYSIS_UPDATE_CONTENT, {
+        'files': {
+          pathname: contentChange
+        }
+      });
+    }).then((result) {
+      expect(result, isNull);
+      return analysisFinished;
+    }).then((_) {
+      // There should be no errors now because the contents on disk have been
+      // overriden with goodText.
+      expect(currentAnalysisErrors[pathname], isEmpty);
+      return server.send(ANALYSIS_UPDATE_CONTENT, {
+        'files': {
+          pathname: {
+            'content': null
+          }
+        }
+      });
+    }).then((result) {
+      expect(result, isNull);
+      return analysisFinished;
+    }).then((_) {
+      // Now there should be errors again, because the contents on disk are no
+      // longer overridden.
+      expect(currentAnalysisErrors[pathname], isNot(isEmpty));
+    });
+  }
 }
 
 main() {