Issue 25095. Add 'Change X to Y type annotation' Quick Fix.

pkg/analysis_server/test/services/correction/fix_test.dart

Index: pkg/analysis_server/test/services/correction/fix_test.dart
diff --git a/pkg/analysis_server/test/services/correction/fix_test.dart b/pkg/analysis_server/test/services/correction/fix_test.dart
index a54eb0085168550511eccd2fab76a53f3c558375..bd7fbc5e6732f9388e75143657a7d349a7faaa29 100644
--- a/pkg/analysis_server/test/services/correction/fix_test.dart
+++ b/pkg/analysis_server/test/services/correction/fix_test.dart
@@ -597,6 +597,45 @@ main(B b) {
 ''');
   }
 
+  test_changeTypeAnnotation_BAD_multipleVariables() async {
+    resolveTestUnit('''
+main() {
+  String a, b = 42;
+}
+''');
+    await assertNoFix(DartFixKind.CHANGE_TYPE_ANNOTATION);
+  }
+
+  test_changeTypeAnnotation_OK_generic() async {
+    resolveTestUnit('''
+main() {
+  String v = <int>[];
+}
+''');
+    await assertHasFix(
+        DartFixKind.CHANGE_TYPE_ANNOTATION,
+        '''
+main() {
+  List<int> v = <int>[];
+}
+''');
+  }
+
+  test_changeTypeAnnotation_OK_simple() async {
+    resolveTestUnit('''
+main() {
+  String v = 'abc'.length;
+}
+''');
+    await assertHasFix(
+        DartFixKind.CHANGE_TYPE_ANNOTATION,
+        '''
+main() {
+  int v = 'abc'.length;
+}
+''');
+  }

[Brian Wilkerson, 2015/12/03 01:48:04]

Perhaps also

f(String s) {
  s = 42;
}

+
   test_createClass() async {
     resolveTestUnit('''
 main() {