[wildcards] LSP definition tests

See: #55681

Change-Id: I733947154352f887896e48b96ead34d8e8159fb5
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/381307
Commit-Queue: Phil Quitslund <pquitslund@google.com>
Reviewed-by: Brian Wilkerson <brianwilkerson@google.com>

pkg/analysis_server/test/lsp/definition_test.dart

@@ -239,6 +239,33 @@ class A {
     await testContents(contents);
   }
 
+  Future<void> test_constructor_redirectingSuper_wildcards() async {
+    var contents = '''
+class A {
+  final int x, y;
+  A(this.[!x!], [this.y = 0]);
+}
+
+class C extends A {
+  final int c;
+  C(this.c, super.^_);
+}
+''';
+
+    await testContents(contents);
+  }
+
+  Future<void> test_constructor_thisReference_wildcards() async {
+    var contents = '''
+class A {
+  final int [!_!];
+  A(this.^_);
+}
+''';
+
+    await testContents(contents);
+  }
+
   Future<void> test_constructorNamed() async {
     var contents = '''
 f() {
@@ -307,6 +334,17 @@ class [!A!] {
     );
   }
 
+  Future<void> test_field_underscore() async {
+    var contents = '''
+class A {
+  int [!_!] = 1;
+  int f() => _^;  
+}
+''';
+
+    await testContents(contents);
+  }
+
   Future<void> test_fieldFormalParam() async {
     var contents = '''
 class A {
@@ -663,6 +701,17 @@ class A {}
     expect(getTextForRange(macroContent, location.targetSelectionRange), 'foo');
   }
 
+  Future<void> test_method_underscore() async {
+    var contents = '''
+class A {
+  int [!_!]() => 1;
+  int f() => _^();  
+}
+''';
+
+    await testContents(contents);
+  }
+
   Future<void> test_nonDartFile() async {
     newFile(pubspecFilePath, simplePubspecContent);
     await initialize();
@@ -747,6 +796,15 @@ class B extends A {
     await testContents(contents);
   }
 
+  Future<void> test_topLevelVariable_underscore() async {
+    var contents = '''
+int [!_!] = 0;
+int f = ^_;
+''';
+
+    await testContents(contents);
+  }
+
   Future<void> test_type() async {
     var contents = '''
 f() {