assert.ok()

version added: 1.0

ok( state [, message ] )

A boolean check. Passes if the first argument is truthy.

name description
state Expression being tested
message (string) A short description of the assertion

Description

The most basic assertion in QUnit, ok() requires just one argument. If the argument evaluates to true, the assertion passes; otherwise, it fails. If a second message argument is provided, it will be displayed in place of the result.

Examples

QUnit.test( "example", assert => {
  // success
  assert.ok( true, "boolean true" );
  assert.ok( "foo", "non-empty string" );
  assert.ok( 1, "number one" );

  // failure
  assert.ok( false, "boolean false" );
  assert.ok( "", "empty string" );
  assert.ok( 0, "number zero" );
  assert.ok( NaN, "NaN value" );
  assert.ok( null, "null value" );
  assert.ok( undefined, "undefined value" );
});