runtime/observatory/tests/service/evaluate_with_scope_test.dart

// Copyright (c) 2017, 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.

import 'package:observatory/service_io.dart';
import 'package:test/test.dart';
import 'test_helper.dart';

var thing1;
var thing2;

testeeMain() {
  thing1 = 3;
  thing2 = 4;
}

var tests = <IsolateTest>[
  (Isolate isolate) async {
    Library lib = await isolate.rootLibrary.load() as Library;
    Field thing1Field = await lib.variables
        .singleWhere((v) => v.name == "thing1")
        .load() as Field;
    var thing1 = thing1Field.staticValue!;
    print(thing1);
    Field thing2Field = await lib.variables
        .singleWhere((v) => v.name == "thing2")
        .load() as Field;
    var thing2 = thing2Field.staticValue!;
    print(thing2);

    Instance result = await lib.evaluate("x + y",
        scope: <String, ServiceObject>{"x": thing1, "y": thing2}) as Instance;
    expect(result.valueAsString, equals('7'));

    DartError errorResult = await lib.evaluate("x + y",
        scope: <String, ServiceObject>{"x": lib, "y": lib}) as DartError;
    print(errorResult);
    expect(errorResult.toString(),
        contains("Cannot evaluate against a VM-internal object"));

    errorResult = await lib.evaluate("x + y",
            scope: <String, ServiceObject>{"not&an&identifier": thing1})
        as DartError;
    print(errorResult);
    expect(errorResult.toString(), contains("invalid 'scope' parameter"));
  },
];

main(args) => runIsolateTests(args, tests, testeeBefore: testeeMain);