Add integration tests for analysis.getErrors.

pkg/analysis_server/test/integration/analysis_domain_inttest.dart

Index: pkg/analysis_server/test/integration/analysis_domain_inttest.dart
diff --git a/pkg/analysis_server/test/integration/analysis_domain_inttest.dart b/pkg/analysis_server/test/integration/analysis_domain_inttest.dart
index 090e8e681a6b0dccf58245267af696b786add4bc..04b064e5fe164207d06acdd7b02ece668f17f730 100644
--- a/pkg/analysis_server/test/integration/analysis_domain_inttest.dart
+++ b/pkg/analysis_server/test/integration/analysis_domain_inttest.dart
@@ -139,8 +139,7 @@ main() {
   test_getHover_noInfo() {
     String filename = 'test.dart';
     String pathname = normalizePath(filename);
-    String text =
-        r'''
+    String text = r'''
 main() {
   // no code
 }
@@ -153,14 +152,48 @@ main() {
     // request is made.  So wait for analysis to finish before testing anything.
     return analysisFinished.then((_) {
       return server.send(ANALYSIS_GET_HOVER, {
-              'file': pathname,
-              'offset': text.indexOf('no code')
-            }).then((result) {
-              expect(result, isAnalysisGetHoverResult);
-              expect(result['hovers'], hasLength(0));
+        'file': pathname,
+        'offset': text.indexOf('no code')
+      }).then((result) {
+        expect(result, isAnalysisGetHoverResult);
+        expect(result['hovers'], hasLength(0));
       });
     });
   }
+
+  test_getErrors_before_analysis() {
+    return getErrorsTest(false);
+  }
+
+  test_getErrors_after_analysis() {
+    debugStdio();
+    return getErrorsTest(true);
+  }
+
+  Future getErrorsTest(bool afterAnalysis) {
+    String filename = 'test.dart';
+    String pathname = normalizePath(filename);
+    String text =
+        r'''
+    main() {
+      var x // parse error: missing ';'
+    }''';
+    writeFile(filename, text);
+    setAnalysisRoots(['']);
+    Future finishTest() {
+      return server.send(ANALYSIS_GET_ERRORS, {
+        'file': pathname
+      }).then((result) {
+        expect(result, isAnalysisGetErrorsResult);
+        expect(result['errors'], equals(currentAnalysisErrors[pathname]));
+      });
+    }
+    if (afterAnalysis) {
+      return analysisFinished.then((_) => finishTest());
+    } else {
+      return finishTest();
+    }
+  }
 }
 
 main() {