assertTrue method

void assertTrue(
  1. Boolean actual, {
  2. String? message,
  3. String? lazyMessage(),
})

Asserts that the specified value is true.

  • message - the message to report if the assertion fails.
  • lazyMessage - the function to return a message to report if the assertion fails.

Implementation

external Unit assertTrue(
  Boolean actual, {
  String? message,
  String? Function() lazyMessage,
});