prefer_asserts_with_message

Group: style

Maturity: stable

Linter v0.1.84

Since info is static, may be stale

View all Lint Rules

Using the Linter

When assertions fail it's not always simple to understand why. Adding a message to the assert helps the developer to understand why the AssertionError occurs.

BAD:

f(a) {
  assert(a != null);
}

class A {
  A(a) : assert(a != null);
}

GOOD:

f(a) {
  assert(a != null, 'a must not be null');
}

class A {
  A(a) : assert(a != null, 'a must not be null');
}