first cut argument list completion suggestions

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

+// Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+library test.services.completion.dart.arglist;
+
+import 'package:analysis_server/src/protocol.dart';
+import 'package:analysis_server/src/services/completion/arglist_computer.dart';
+import 'package:unittest/unittest.dart';
+
+import '../../reflective_tests.dart';
+import 'completion_test_util.dart';
+
+main() {
+  groupSep = ' | ';
+  runReflectiveTests(ArgListComputerTest);
+}
+
+@ReflectiveTestCase()
+class ArgListComputerTest extends AbstractCompletionTest {
+
+  @override
+  void setUp() {
+    super.setUp();
+    computer = new ArgListComputer();
+  }
+
+  test_ArgumentList_imported_function_0() {
+    // ArgumentList  MethodInvocation  ExpressionStatement  Block
+    addSource('/libA.dart', '''
+      library A;
+      bool hasLength(int expected) { }
+      expect() { }
+      void baz() { }''');
+    addTestSource('''
+      import '/libA.dart'
+      class B { }
+      String bar() => true;
+      void main() {expect(^)}''');
+    computeFast();
+    return computeFull(true).then((_) {
+      assertNoSuggestions(kind: CompletionSuggestionKind.ARGUMENT_LIST);
+    });
+  }
+
+//  test_ArgumentList_imported_function_1() {
+//    // ArgumentList  MethodInvocation  ExpressionStatement  Block
+//    addSource('/libA.dart', '''
+//      library A;
+//      bool hasLength(int expected) { }
+//      expect(String arg) { }
+//      void baz() { }''');
+//    addTestSource('''
+//      import '/libA.dart'
+//      class B { }
+//      String bar() => true;
+//      void main() {expect(^)}''');
+//    computeFast();
+//    return computeFull(true).then((_) {
+//      assertSuggestArgumentList(['arg'], ['String']);
+//    });
+//  }
+
+  test_ArgumentList_local_function_1() {
+    // ArgumentList  MethodInvocation  ExpressionStatement  Block
+    addSource('/libA.dart', '''
+      library A;
+      bool hasLength(int expected) { }
+      void baz() { }''');
+    addTestSource('''
+      import '/libA.dart'
+      expect(arg) { }
+      class B { }
+      String bar() => true;
+      void main() {expect(^)}''');
+    computeFast();
+    return computeFull(true).then((_) {
+      assertSuggestArgumentList(['arg'], ['dynamic']);
+    });
+  }
+
+  test_ArgumentList_local_method_0() {
+    // ArgumentList  MethodInvocation  ExpressionStatement  Block
+    addSource('/libA.dart', '''
+      library A;
+      bool hasLength(int expected) { }
+      void baz() { }''');
+    addTestSource('''
+      import '/libA.dart'
+      class B {
+        expect() { }
+        void foo() {expect(^)}}
+      String bar() => true;''');
+    computeFast();
+    return computeFull(true).then((_) {
+      assertNoSuggestions(kind: CompletionSuggestionKind.ARGUMENT_LIST);
+    });
+  }
+
+  test_ArgumentList_local_method_2() {
+    // ArgumentList  MethodInvocation  ExpressionStatement  Block
+    addSource('/libA.dart', '''
+      library A;
+      bool hasLength(int expected) { }
+      void baz() { }''');
+    addTestSource('''
+      import '/libA.dart'
+      class B {
+        expect(arg, int blat) { }
+        void foo() {expect(^)}}
+      String bar() => true;''');
+    computeFast();
+    return computeFull(true).then((_) {
+      assertSuggestArgumentList(['arg', 'blat'], ['dynamic', 'int']);
+    });
+  }
+}