Introduce CompletionTarget to take the place of the Node being completed.

pkg/analysis_server/test/services/completion/completion_test_util.dart

Index: pkg/analysis_server/test/services/completion/completion_test_util.dart
diff --git a/pkg/analysis_server/test/services/completion/completion_test_util.dart b/pkg/analysis_server/test/services/completion/completion_test_util.dart
index cf4a551335b1231c1fcb9bb3a8acaa7805f13f13..d597ffaff0c61c1d1fa10b00b5ee6a84c1af78e5 100644
--- a/pkg/analysis_server/test/services/completion/completion_test_util.dart
+++ b/pkg/analysis_server/test/services/completion/completion_test_util.dart
@@ -10,6 +10,7 @@ import 'package:analysis_server/src/protocol.dart' as protocol show Element,
     ElementKind;
 import 'package:analysis_server/src/protocol.dart' hide Element, ElementKind;
 import 'package:analysis_server/src/services/completion/completion_manager.dart';
+import 'package:analysis_server/src/services/completion/completion_target.dart';
 import 'package:analysis_server/src/services/completion/dart_completion_cache.dart';
 import 'package:analysis_server/src/services/completion/dart_completion_manager.dart';
 import 'package:analysis_server/src/services/completion/imported_computer.dart';
@@ -421,6 +422,7 @@ abstract class AbstractCompletionTest extends AbstractContextTest {
         new NodeLocator.con1(completionOffset).searchWithin(testUnit);
     request.unit = testUnit;
     request.node = completionNode;
+    request.target = new CompletionTarget.forOffset(testUnit, completionOffset);
     return computer.computeFast(request);
   }
 
@@ -949,46 +951,46 @@ abstract class AbstractSelectorSuggestionTest extends AbstractCompletionTest {
     });
   }
 
-  test_AssignmentExpression_type_partial() {
+  test_AssignmentExpression_type_newline() {
     // SimpleIdentifier  TypeName  VariableDeclarationList
     // VariableDeclarationStatement  Block
     addTestSource('''
       class A {} main() {
         int a;
-        int^ b = 1;}''');
+        ^
+        b = 1;}''');
     computeFast();
     return computeFull((bool result) {
       assertSuggestLocalClass('A');
       assertSuggestImportedClass('int');
-      // TODO (danrubel) When entering 1st of 2 identifiers on assignment LHS
-      // the user may be either (1) entering a type for the assignment
-      // or (2) starting a new statement.
-      // Consider suggesting only types
-      // if only spaces separates the 1st and 2nd identifiers.
-      //assertNotSuggested('a');
-      //assertNotSuggested('main');
-      //assertNotSuggested('identical');
+      // Allow non-types preceding an identifier on LHS of assignment
+      // if newline follows first identifier
+      // because user is probably starting a new statement
+      assertSuggestLocalVariable('a', 'int');
+      assertSuggestLocalFunction('main', null);
+      assertSuggestImportedFunction('identical', 'bool');
     });
   }
 
-  test_AssignmentExpression_type_newline() {
+  test_AssignmentExpression_type_partial() {
     // SimpleIdentifier  TypeName  VariableDeclarationList
     // VariableDeclarationStatement  Block
     addTestSource('''
       class A {} main() {
         int a;
-        ^
-        b = 1;}''');
+        int^ b = 1;}''');
     computeFast();
     return computeFull((bool result) {
       assertSuggestLocalClass('A');
       assertSuggestImportedClass('int');
-      // Allow non-types preceding an identifier on LHS of assignment
-      // if newline follows first identifier
-      // because user is probably starting a new statement
-      assertSuggestLocalVariable('a', 'int');
-      assertSuggestLocalFunction('main', null);
-      assertSuggestImportedFunction('identical', 'bool');
+      // TODO (danrubel) When entering 1st of 2 identifiers on assignment LHS
+      // the user may be either (1) entering a type for the assignment
+      // or (2) starting a new statement.
+      // Consider suggesting only types
+      // if only spaces separates the 1st and 2nd identifiers.
+      //assertNotSuggested('a');
+      //assertNotSuggested('main');
+      //assertNotSuggested('identical');
     });
   }