Migrate ErrorResolverTest.

R=brianwilkerson@google.com

Change-Id: I2593ca49a3c8b1a0281bcdc993628e11aa1bc7bf
Reviewed-on: https://dart-review.googlesource.com/c/92842
Reviewed-by: Brian Wilkerson <brianwilkerson@google.com>
Commit-Queue: Konstantin Shcheglov <scheglov@google.com>
diff --git a/pkg/analyzer/test/generated/resolver_test.dart b/pkg/analyzer/test/generated/resolver_test.dart
index 42e2703..5d5b657 100644
--- a/pkg/analyzer/test/generated/resolver_test.dart
+++ b/pkg/analyzer/test/generated/resolver_test.dart
@@ -23,13 +23,13 @@
 import 'package:analyzer/src/generated/source_io.dart';
 import 'package:analyzer/src/generated/testing/ast_test_factory.dart';
 import 'package:analyzer/src/generated/testing/element_factory.dart';
-import 'package:analyzer/src/generated/testing/element_search.dart';
 import 'package:analyzer/src/generated/testing/test_type_provider.dart';
 import 'package:analyzer/src/source/source_resource.dart';
 import 'package:analyzer/src/test_utilities/resource_provider_mixin.dart';
 import 'package:test/test.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
 
+import '../src/dart/resolution/driver_resolution.dart';
 import 'analysis_context_factory.dart';
 import 'parser_test.dart';
 import 'resolver_test_case.dart';
@@ -163,12 +163,10 @@
   }
 }
 
-/// TODO(paulberry): migrate this test away from the task model.
-/// See dartbug.com/35734.
 @reflectiveTest
-class ErrorResolverTest extends ResolverTestCase {
+class ErrorResolverTest extends DriverResolutionTest {
   test_breakLabelOnSwitchMember() async {
-    Source source = addSource(r'''
+    assertErrorsInCode(r'''
 class A {
   void m(int i) {
     switch (i) {
@@ -178,14 +176,11 @@
         break l;
     }
   }
-}''');
-    await computeAnalysisResult(source);
-    assertErrors(source, [ResolverErrorCode.BREAK_LABEL_ON_SWITCH_MEMBER]);
-    verify([source]);
+}''', [ResolverErrorCode.BREAK_LABEL_ON_SWITCH_MEMBER]);
   }
 
   test_continueLabelOnSwitch() async {
-    Source source = addSource(r'''
+    assertErrorsInCode(r'''
 class A {
   void m(int i) {
     l: switch (i) {
@@ -193,43 +188,24 @@
         continue l;
     }
   }
-}''');
-    await computeAnalysisResult(source);
-    assertErrors(source, [ResolverErrorCode.CONTINUE_LABEL_ON_SWITCH]);
-    verify([source]);
+}''', [ResolverErrorCode.CONTINUE_LABEL_ON_SWITCH]);
   }
 
   test_enclosingElement_invalidLocalFunction() async {
-    String code = r'''
+    addTestFile(r'''
 class C {
   C() {
     int get x => 0;
   }
-}''';
-    Source source = addSource(code);
-
-    TestAnalysisResult analysisResult = await computeAnalysisResult(source);
-    assertErrors(source, [
+}''');
+    await resolveTestFile();
+    assertTestErrors([
       ParserErrorCode.MISSING_FUNCTION_PARAMETERS,
       ParserErrorCode.EXPECTED_TOKEN
     ]);
 
-    CompilationUnitElement unit = analysisResult.unit.declaredElement;
-    LibraryElement library = unit.library;
-    expect(library, isNotNull);
-    expect(unit.enclosingElement, same(library));
-
-    var types = unit.types;
-    expect(types, hasLength(1));
-    var type = types[0];
-    expect(type, isNotNull);
-
-    var constructors = type.constructors;
-    expect(constructors, hasLength(1));
-    ConstructorElement constructor = constructors[0];
-    expect(constructor, isNotNull);
-
-    FunctionElement x = findElementsByName(analysisResult.unit, 'x').single;
+    var constructor = findElement.unnamedConstructor('C');
+    var x = findElement.localFunction('x');
     expect(x.enclosingElement, constructor);
   }
 }