QUnit API Docs

expect( amount )

Specify how many assertions are expected to run within a test.

Description

To ensure that an explicit number of assertions are run within any test, use assert.expect( number ) to register an expected count. If the number of assertions run does not match the expected count, the test will fail.

Examples

Establish an expected assertion count

QUnit.test( "a test", function( assert ) {
  assert.expect( 2 );

  function calc( x, operation ) {
    return operation( x );
  }

  var result = calc( 2, function( x ) {
    assert.ok( true, "calc() calls operation function" );
    return x * x;
  });

  assert.equal( result, 4, "2 squared equals 4" );
});