add named constructor, cascade selector suggestions and more tests

pkg/analysis_server/test/services/completion/invocation_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.invocation;
 
 
 import 'package:analysis_server/src/protocol.dart';
 import 'package:analysis_server/src/services/completion/invocation_computer.dart';
 import 'package:unittest/unittest.dart';
 
 import '../../reflective_tests.dart';
 import 'completion_test_util.dart';
 
 main() {
   groupSep = ' | ';
   runReflectiveTests(InvocationComputerTest);
 }
 
 @ReflectiveTestCase()
 class InvocationComputerTest extends AbstractCompletionTest {
 
   @override
   void setUp() {
     super.setUp();
     computer = new InvocationComputer();
   }
 
+  test_CascadeExpression_selector1() {
+    // PropertyAccess  CascadeExpression  ExpressionStatement
+    addTestSource('''
+      class A {var b; X _c;}
+      class X{}
+      // looks like a cascade to the parser
+      // but the user is trying to get completions for a non-cascade
+      main() {A a; a.^.b}''');
+    return computeFull(true).then((_) {
+      assertSuggestGetter('b', null);
+      assertSuggestGetter('_c', 'X');
+    });
+  }
+
+  test_CascadeExpression_selector2() {
+    // PropertyAccess  CascadeExpression  ExpressionStatement
+    addTestSource('''
+      class A {var b; X _c;}
+      class X{}
+      main() {A a; a..^b}''');
+    return computeFull().then((_) {
+      assertSuggestGetter('b', null);
+      assertSuggestGetter('_c', 'X');
+    });
+  }
+
+  test_CascadeExpression_target() {
+    // PropertyAccess  CascadeExpression  ExpressionStatement
+    addTestSource('''
+      class A {var b; X _c;}
+      class X{}
+      main() {A a; a^..b}''');
+    return computeFull().then((_) {
+      assertNotSuggested('b');
+      assertNotSuggested('_c');
+    });
+  }
+
+  test_ConstructorName_importedClass() {
+    // SimpleIdentifier  PrefixedIdentifier  TypeName  ConstructorName
+    // InstanceCreationExpression
+    addSource('/testB.dart', '''
+      lib B;
+      class X {X.c(); X._d(); z() {}}''');
+    addTestSource('''
+      import "/testB.dart";
+      var m;
+      main() {new X.^}''');
+    return computeFull().then((_) {
+      assertSuggest(CompletionSuggestionKind.CONSTRUCTOR, 'c');
+      assertNotSuggested('_d');
+      assertNotSuggested('z');
+      assertNotSuggested('m');
+    });
+  }
+
+  test_ConstructorName_localClass() {
+    // SimpleIdentifier  PrefixedIdentifier  TypeName  ConstructorName
+    // InstanceCreationExpression
+    addTestSource('''
+      var m;
+      class X {X.c(); X._d(); z() {}}
+      main() {new X.^}''');
+    return computeFull().then((_) {
+      assertSuggest(CompletionSuggestionKind.CONSTRUCTOR, 'c');
+      assertSuggest(CompletionSuggestionKind.CONSTRUCTOR, '_d');
+      assertNotSuggested('z');
+      assertNotSuggested('m');
+    });
+  }
+
   test_PrefixedIdentifier_field() {
     // SimpleIdentifier  PrefixedIdentifier  ExpressionStatement
     addTestSource('''
       class A {var b; X _c;}
       class X{}
       main() {A a; a.^}''');
     return computeFull().then((_) {
       assertSuggestGetter('b', null);
       assertSuggestGetter('_c', 'X');
     });
   }
 
   test_PrefixedIdentifier_field_imported() {
     // SimpleIdentifier  PrefixedIdentifier  ExpressionStatement
     addSource('/testB.dart', '''
       lib B;
       class X{}
       class A {var b; X _c;}''');
     addTestSource('''
       import "/testB.dart";
       main() {A a; a.^}''');
     return computeFull().then((_) {
       assertSuggestGetter('b', null);
       assertNotSuggested('_c');
     });
   }
 
-  // TODO (danrubel) implement
   test_PrefixedIdentifier_getter() {
     // SimpleIdentifier  PrefixedIdentifier  ExpressionStatement
     addTestSource('''
       class A {X get b => new A();get _c => new A();}
       class X{}
       main() {A a; a.^}''');
     return computeFull().then((_) {
       assertSuggestGetter('b', 'X');
       assertSuggestGetter('_c', null);
     });
@@ skipping 17 matching lines @@
     addTestSource('''
       class A {S get b => new A();A get _c => new A();}
       class B implements A {S get b => new A();} class S{}
       main() {B b; b.^}''');
     return computeFull().then((_) {
       assertSuggestGetter('b', 'S');
       assertSuggestGetter('_c', 'A');
     });
   }
 
+  test_PrefixedIdentifier_interpolation() {
+    // SimpleIdentifier  PrefixedIdentifier  InterpolationExpression
+    addTestSource('main() {String name; print("hello \${name.^}");}');
+    return computeFull().then((_) {
+      assertSuggestGetter('length', 'int');
+    });
+  }
+
   test_PrefixedIdentifier_library() {
     // SimpleIdentifier  PrefixedIdentifier  ExpressionStatement
     addSource('/testB.dart', '''
       lib B;
       class X { }
       class Y { }''');
     addTestSource('''
       import "/testB.dart" as b;
       main() {b.^}''');
     return computeFull().then((_) {
@@ skipping 52 matching lines @@
       class M{}''');
     addTestSource('''
       import "/testB.dart";
       foo(X x) {x.^}''');
     return computeFull().then((_) {
       assertSuggestGetter('y', 'M');
       assertNotSuggested('_z');
     });
   }
 
+  test_PrefixedIdentifier_prefix() {
+    // SimpleIdentifier  PrefixedIdentifier  InterpolationExpression
+    addTestSource('main() {String name; print("hello \${nam^e.length}");}');
+    return computeFull().then((_) {
+      // LocalComputer generates suggestions for prefix
+      assertNotSuggested('name');
+      assertNotSuggested('length');
+    });
+  }
+
   test_PrefixedIdentifier_setter() {
     // SimpleIdentifier  PrefixedIdentifier  ExpressionStatement
     addTestSource('''
       class A {set b(X x) {} set _c(X x) {}}
       main() {A a; a.^}''');
     return computeFull().then((_) {
       assertSuggestSetter('b');
       assertSuggestSetter('_c');
     });
   }
 
   test_PrefixedIdentifier_setter_imported() {
     // SimpleIdentifier  PrefixedIdentifier  ExpressionStatement
     addSource('/testB.dart', '''
       lib B;
       class X {set y(X x) {} set _z(X x) {}}''');
     addTestSource('''
       import "/testB.dart";
       main() {X x; x.^}''');
     return computeFull().then((_) {
       assertSuggestSetter('y');
       assertNotSuggested('_z');
     });
   }
 
-  xtest_ConstructorName() {
-    // SimpleIdentifier  PrefixedIdentifier  TypeName  ConstructorName
-    // InstanceCreationExpression
+  //TODO (danrubel) implement
+  xtest_IsExpression() {
+    // SimpleIdentifier  TypeName  IsExpression  IfStatement
     addSource('/testB.dart', '''
       lib B;
       class X {X.c(); X._d(); z() {}}''');
     addTestSource('''
       import "/testB.dart";
-      main() {new X.^}''');
+      main() {var x; if (x is ^) { }}''');
     return computeFull().then((_) {
-      assertSuggest(CompletionSuggestionKind.CONSTRUCTOR, 'c');
-      assertNotSuggested('_d');
-      assertNotSuggested('z');
+      assertNoSuggestions();
     });
   }
 }