<?php

// mocks
class HTMLPurifier_ContextTest extends HTMLPurifier_Harness {
	protected $context;
	public function setUp() {
		$this->context = new HTMLPurifier_Context ();
	}
	public function testStandardUsage() {
		generate_mock_once ( 'HTMLPurifier_IDAccumulator' );
		
		$this->assertFalse ( $this->context->exists ( 'IDAccumulator' ) );
		
		$accumulator = new HTMLPurifier_IDAccumulatorMock ();
		$this->context->register ( 'IDAccumulator', $accumulator );
		$this->assertTrue ( $this->context->exists ( 'IDAccumulator' ) );
		
		$accumulator_2 = & $this->context->get ( 'IDAccumulator' );
		$this->assertReference ( $accumulator, $accumulator_2 );
		
		$this->context->destroy ( 'IDAccumulator' );
		$this->assertFalse ( $this->context->exists ( 'IDAccumulator' ) );
		
		$this->expectError ( 'Attempted to retrieve non-existent variable IDAccumulator' );
		$accumulator_3 = & $this->context->get ( 'IDAccumulator' );
		$this->assertNull ( $accumulator_3 );
		
		$this->expectError ( 'Attempted to destroy non-existent variable IDAccumulator' );
		$this->context->destroy ( 'IDAccumulator' );
	}
	public function testReRegister() {
		$var = true;
		$this->context->register ( 'OnceOnly', $var );
		
		$this->expectError ( 'Name OnceOnly produces collision, cannot re-register' );
		$this->context->register ( 'OnceOnly', $var );
		
		// destroy it, now registration is okay
		$this->context->destroy ( 'OnceOnly' );
		$this->context->register ( 'OnceOnly', $var );
	}
	public function test_loadArray() {
		// references can be *really* wonky!
		$context_manual = new HTMLPurifier_Context ();
		$context_load = new HTMLPurifier_Context ();
		
		$var1 = 1;
		$var2 = 2;
		
		$context_manual->register ( 'var1', $var1 );
		$context_manual->register ( 'var2', $var2 );
		
		// you MUST set up the references when constructing the array,
		// otherwise the registered version will be a copy
		$array = array (
				'var1' => &$var1,
				'var2' => &$var2 
		);
		
		$context_load->loadArray ( $array );
		$this->assertIdentical ( $context_manual, $context_load );
		
		$var1 = 10;
		$var2 = 20;
		
		$this->assertIdentical ( $context_manual, $context_load );
	}
	public function testNull() {
		$context = new HTMLPurifier_Context ();
		$var = NULL;
		$context->register ( 'var', $var );
		$this->assertNull ( $context->get ( 'var' ) );
		$context->destroy ( 'var' );
	}
}

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