Implement tag name selector for FindElements WebDriver command

components/script/script_thread.rs

@@ -2035,6 +2035,14 @@ impl ScriptThread {
                     reply,
                 )
             },
+            WebDriverScriptCommand::FindElementsTagName(selector, reply) => {
+                webdriver_handlers::handle_find_elements_tag_name(
+                    &*documents,
+                    pipeline_id,
+                    selector,
+                    reply,
+                )
+            },
             WebDriverScriptCommand::FindElementElementCSS(selector, element_id, reply) => {
                 webdriver_handlers::handle_find_element_element_css(
                     &*documents,

components/script/webdriver_handlers.rs

@@ -223,6 +223,25 @@ pub fn handle_find_elements_css(
     reply.send(node_ids).unwrap();
 }
 
+pub fn handle_find_elements_tag_name(
+    documents: &Documents,
+    pipeline: PipelineId,
+    selector: String,
+    reply: IpcSender<Result<Vec<String>, ()>>,
+) {
+    let node_ids = documents
+        .find_document(pipeline)
+        .ok_or(())
+        .and_then(|doc| Ok(doc.GetElementsByTagName(DOMString::from(selector))))
+        .map(|nodes| {
+            nodes
+                .elements_iter()
+                .map(|x| x.upcast::<Node>().unique_id())
+                .collect::<Vec<String>>()
+        });
+    reply.send(node_ids).unwrap();
+}
+
 pub fn handle_find_element_element_css(
     documents: &Documents,
     pipeline: PipelineId,

components/script_traits/webdriver_msg.rs

@@ -27,6 +27,7 @@ pub enum WebDriverScriptCommand {
     FindElementCSS(String, IpcSender<Result<Option<String>, ()>>),
     FindElementTagName(String, IpcSender<Result<Option<String>, ()>>),
     FindElementsCSS(String, IpcSender<Result<Vec<String>, ()>>),
+    FindElementsTagName(String, IpcSender<Result<Vec<String>, ()>>),
     FindElementElementCSS(String, String, IpcSender<Result<Option<String>, ()>>),
     FindElementElementsCSS(String, String, IpcSender<Result<Option<String>, ()>>),
     FocusElement(String, IpcSender<Result<(), ()>>),

components/webdriver_server/lib.rs

@@ -902,20 +902,31 @@ impl Handler {
         Ok(WebDriverResponse::Void)
     }
 
+    // https://w3c.github.io/webdriver/#find-elements
     fn handle_find_elements(
         &self,
         parameters: &LocatorParameters,
     ) -> WebDriverResult<WebDriverResponse> {
-        if parameters.using != LocatorStrategy::CSSSelector {
+        let (sender, receiver) = ipc::channel().unwrap();
-            return Err(WebDriverError::new(
+
-                ErrorStatus::UnsupportedOperation,
+        match parameters.using {
-                "Unsupported locator strategy",
+            LocatorStrategy::CSSSelector => {
-            ));
+                let cmd = WebDriverScriptCommand::FindElementsCSS(parameters.value.clone(), sender);
+                self.browsing_context_script_command(cmd)?;
+            },
+            LocatorStrategy::TagName => {
+                let cmd =
+                    WebDriverScriptCommand::FindElementsTagName(parameters.value.clone(), sender);
+                self.browsing_context_script_command(cmd)?;
+            },
+            _ => {
+                return Err(WebDriverError::new(
+                    ErrorStatus::UnsupportedOperation,
+                    "Unsupported locator strategy",
+                ));
+            },
         }
 
-        let (sender, receiver) = ipc::channel().unwrap();
-        let cmd = WebDriverScriptCommand::FindElementsCSS(parameters.value.clone(), sender);
-        self.browsing_context_script_command(cmd)?;
         match receiver.recv().unwrap() {
             Ok(value) => {
                 let resp_value: Vec<Value> = value

tests/wpt/metadata/webdriver/tests/find_elements/find.py.ini

@@ -5,9 +5,6 @@
   [test_find_elements_link_text[<a href=#>LINK TEXT</a>-LINK TEXT\]]
     expected: FAIL
 
-  [test_htmldocument[tag name-html\]]
-    expected: FAIL
-
   [test_find_elements_link_text[<a href=#>link text</a>-link text\]]
     expected: FAIL
 
@@ -50,9 +47,6 @@
   [test_find_elements[xpath-//a\]]
     expected: FAIL
 
-  [test_find_elements[tag name-a\]]
-    expected: FAIL
-
   [test_find_elements_partial_link_text[<a href=# style='text-transform: uppercase'>partial link text</a>-LINK\]]
     expected: FAIL