function testBreakReference()
{
// Get a reference and make a change
$fooRef1 = self::returnByReference();
$this->assertEquals('original', $fooRef1['foo']);
$fooRef1['foo'] = 'modified';
// Make sure that the referenced item was actually changed
$fooRef2 = self::returnByReference();
$this->assertEquals('modified', $fooRef1['foo']);
$this->assertEquals('original', $fooRef2['foo']);
// Get a non-reference, make a change, and make sure the references were unaffected.
$fooNonReference = CRM_Utils_Array::breakReference(self::returnByReference());
$fooNonReference['foo'] = 'privately-modified';
$this->assertEquals('modified', $fooRef1['foo']);
$this->assertEquals('original', $fooRef2['foo']);
$this->assertEquals('privately-modified', $fooNonReference['foo']);
}
