+ /**
+ * Asserts that the provided variable is of the specified
+ * internal type or equals the $value argument. This is useful
+ * for testing return types of functions that return a certain
+ * type or *value* when not set or on error.
+ *
+ * @since 1.20
+ *
+ * @param string $type
+ * @param mixed $actual
+ * @param mixed $value
+ * @param string $message
+ */
+ protected function assertTypeOrValue( $type, $actual, $value = false, $message = '' ) {
+ if ( $actual === $value ) {
+ $this->assertTrue( true, $message );
+ }
+ else {
+ $this->assertType( $type, $actual, $message );
+ }
+ }
+
+ /**
+ * Asserts the type of the provided value. This can be either
+ * in internal type such as boolean or integer, or a class or
+ * interface the value extends or implements.
+ *
+ * @since 1.20
+ *
+ * @param string $type
+ * @param mixed $actual
+ * @param string $message
+ */
+ protected function assertType( $type, $actual, $message = '' ) {
+ if ( class_exists( $type ) || interface_exists( $type ) ) {
+ $this->assertInstanceOf( $type, $actual, $message );
+ }
+ else {
+ $this->assertInternalType( $type, $actual, $message );
+ }
+ }
+
+ /**
+ * Returns true iff the given namespace defaults to Wikitext
+ * according to $wgNamespaceContentModels
+ *
+ * @param int $ns The namespace ID to check
+ *
+ * @return bool
+ * @since 1.21
+ */
+ protected function isWikitextNS( $ns ) {
+ global $wgNamespaceContentModels;
+
+ if ( isset( $wgNamespaceContentModels[$ns] ) ) {
+ return $wgNamespaceContentModels[$ns] === CONTENT_MODEL_WIKITEXT;
+ }
+
+ return true;
+ }
+
+ /**
+ * Returns the ID of a namespace that defaults to Wikitext.
+ * Throws an MWException if there is none.
+ *
+ * @return int the ID of the wikitext Namespace
+ * @since 1.21
+ */
+ protected function getDefaultWikitextNS() {
+ global $wgNamespaceContentModels;
+
+ static $wikitextNS = null; // this is not going to change
+ if ( $wikitextNS !== null ) {
+ return $wikitextNS;
+ }
+
+ // quickly short out on most common case:
+ if ( !isset( $wgNamespaceContentModels[NS_MAIN] ) ) {
+ return NS_MAIN;
+ }
+
+ // NOTE: prefer content namespaces
+ $namespaces = array_unique( array_merge(
+ MWNamespace::getContentNamespaces(),
+ array( NS_MAIN, NS_HELP, NS_PROJECT ), // prefer these
+ MWNamespace::getValidNamespaces()
+ ) );
+
+ $namespaces = array_diff( $namespaces, array(
+ NS_FILE, NS_CATEGORY, NS_MEDIAWIKI, NS_USER // don't mess with magic namespaces
+ ));
+
+ $talk = array_filter( $namespaces, function ( $ns ) {
+ return MWNamespace::isTalk( $ns );
+ } );
+
+ // prefer non-talk pages
+ $namespaces = array_diff( $namespaces, $talk );
+ $namespaces = array_merge( $namespaces, $talk );
+
+ // check default content model of each namespace
+ foreach ( $namespaces as $ns ) {
+ if ( !isset( $wgNamespaceContentModels[$ns] ) ||
+ $wgNamespaceContentModels[$ns] === CONTENT_MODEL_WIKITEXT ) {
+
+ $wikitextNS = $ns;
+ return $wikitextNS;
+ }
+ }
+
+ // give up
+ // @todo: Inside a test, we could skip the test as incomplete.
+ // But frequently, this is used in fixture setup.
+ throw new MWException( "No namespace defaults to wikitext!" );
+ }