CODEWITHSUNDEEP
c#regex
Jake Rote
Jake Rote

Reputation: 2247

Match where does not begin with

I currently have the following regex

(?!\(\) => )test\(.*,.*\)

But I would only like it to match

test("Test 1", () { expect(1, equals(1)); });

And not 

test(test, () { expect(test, "Test3"); }) )

from the following text

import 'package:unittest/unittest.dart';

main() {

  testExecuter("fileName", test, () => $0 );
  test("Test 1", () { expect(1, equals(1)); });

  var tests = ["Test2", "Test3"];

  for (var test in tests) {
    testExecuter("fileName", test, () => test(test, () { expect(test, "Test3"); }) );
  }
}

I am using regexpal.com to test it for some reason the part of the regex saying not to begin with () => is not working

Upvotes: 0

Views: 58

Answers (1)

Tim Pietzcker
Tim Pietzcker

Reputation: 336158

You're using a lookahead assertion when you should be using a lookbehind assertion:

(?<!\(\) => )test\(.*,.*\)

After all, "test(test, ()..." does in fact not begin with "() => " - it is preceded by it, hence you need to look "behind" the current position.

Upvotes: 1

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