public function test_stage_propagate()
{
$version20 = mlang_version::by_branch('MOODLE_20_STABLE');
$version21 = mlang_version::by_branch('MOODLE_21_STABLE');
$version22 = mlang_version::by_branch('MOODLE_22_STABLE');
$component20en = new mlang_component('admin', 'en', $version20);
$component20en->add_string(new mlang_string('foo1', 'Bar1'));
$component20en->add_string(new mlang_string('foo2', 'Bar2'));
$component20cs = new mlang_component('admin', 'cs', $version20);
$component20cs->add_string(new mlang_string('foo1', 'TranslatedOldBar1'));
$component21en = new mlang_component('admin', 'en', $version21);
$component21en->add_string(new mlang_string('foo1', 'Bar1'));
$component21en->add_string(new mlang_string('foo2', 'Bar2'));
$component21en->add_string(new mlang_string('foo3', 'Bar3'));
$component22en = new mlang_component('admin', 'en', $version22);
$component22en->add_string(new mlang_string('foo1', 'Bar1'));
$component22en->add_string(new mlang_string('foo2', 'Bar2'));
$component22en->add_string(new mlang_string('foo3', 'NewBar3'));
$stage = new mlang_stage();
$stage->add($component20en);
$stage->add($component20cs);
$stage->add($component21en);
$stage->add($component22en);
$stage->commit('Initial strings', array('source' => 'unittest'), true);
$component20en->clear();
$component21en->clear();
$component22en->clear();
unset($stage);
// simple usage - the user translated a string on 2.1 and want it being applied to 2.2, too
$stage = new mlang_stage();
$component21cs = new mlang_component('admin', 'cs', $version21);
$component21cs->add_string(new mlang_string('foo1', 'TranslatedBar1'));
$stage->add($component21cs);
$component21cs->clear();
$this->assertEqual($stage->propagate(array($version22)), 1);
$propagatedcomponent = $stage->get_component('admin', 'cs', $version22);
$this->assertNotNull($propagatedcomponent, 'The component "admin" must exist on ' . $version22->label);
$this->assertTrue($propagatedcomponent->has_string('foo1'));
$propagatedstring = $propagatedcomponent->get_string('foo1');
$this->assertTrue($propagatedstring->text, 'TranslatedBar1');
$stage->clear();
// the change is not propagated if the changed string is staged several times and the values
// are different
$stage = new mlang_stage();
$component20cs = new mlang_component('admin', 'cs', $version20);
$component20cs->add_string(new mlang_string('foo2', 'TranslatedOldBar2'));
$component21cs = new mlang_component('admin', 'cs', $version21);
$component21cs->add_string(new mlang_string('foo2', 'TranslatedBar2'));
$stage->add($component20cs);
$stage->add($component21cs);
$component20cs->clear();
$component21cs->clear();
$this->assertEqual($stage->propagate(array($version20, $version21, $version22)), 0);
$this->assertEqual($stage->get_component('admin', 'cs', $version20)->get_string('foo2')->text, 'TranslatedOldBar2');
$this->assertEqual($stage->get_component('admin', 'cs', $version21)->get_string('foo2')->text, 'TranslatedBar2');
$this->assertNull($stage->get_component('admin', 'cs', $version22));
$stage->clear();
// but the change is propagated if the changed string is staged several times and the values
// are the same
$stage = new mlang_stage();
$component20cs = new mlang_component('admin', 'cs', $version20);
$component20cs->add_string(new mlang_string('foo2', 'TranslatedBar2'));
$component21cs = new mlang_component('admin', 'cs', $version21);
$component21cs->add_string(new mlang_string('foo2', 'TranslatedBar2'));
$stage->add($component20cs);
$stage->add($component21cs);
$component20cs->clear();
$component21cs->clear();
$this->assertEqual($stage->propagate(array($version20, $version21, $version22)), 1);
$this->assertEqual($stage->get_component('admin', 'cs', $version22)->get_string('foo2')->text, 'TranslatedBar2');
$this->assertEqual($stage->get_component('admin', 'cs', $version21)->get_string('foo2')->text, 'TranslatedBar2');
$this->assertEqual($stage->get_component('admin', 'cs', $version20)->get_string('foo2')->text, 'TranslatedBar2');
$stage->clear();
// the staged string is propagated to another branch only if the English originals match
// in the following test, the 2.1 translation of foo3 should not propagate to neither 2.0
// (because the string does not exist there) not 2.2 (because the English originals differ)
$stage = new mlang_stage();
$component21cs = new mlang_component('admin', 'cs', $version21);
$component21cs->add_string(new mlang_string('foo3', 'TranslatedBar3'));
$stage->add($component21cs);
$component21cs->clear();
$this->assertEqual($stage->propagate(array($version20, $version21, $version22)), 0);
$this->assertNull($stage->get_component('admin', 'cs', $version20));
$this->assertNull($stage->get_component('admin', 'cs', $version22));
$stage->clear();
}
