assert.false()

version added: 2.11

false( actual [, message ] )

A strict comparison that passes if the first argument is boolean false.

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

Description

false() requires just one argument. If the argument evaluates to false, the assertion passes; otherwise, it fails.

true() can be used to explicitly test for a true value.

Examples

QUnit.test( "false test", function( assert ) {
  assert.false( false, "false succeeds" );

  assert.false( "not-empty", "not-empty string fails" );
  assert.false( "", "empty string fails" );
  assert.false( 0, "0 fails" );
  assert.false( true, "true fails" );
  assert.false( NaN, "NaN fails" );
  assert.false( null, "null fails" );
  assert.false( undefined, "undefined fails" );
});