Add placeholder text queries

packages/dom/src/queries.rs

@@ -1,5 +1,7 @@
 mod alt_text;
 mod display_value;
+mod placeholder_text;
 
 pub use alt_text::*;
 pub use display_value::*;
+pub use placeholder_text::*;

packages/dom/src/queries/placeholder_text.rs

@@ -0,0 +1,36 @@
+use web_sys::HtmlElement;
+
+use crate::{
+    build_queries,
+    error::QueryError,
+    query_all_by_attribute,
+    types::{Matcher, MatcherOptions},
+};
+
+pub fn _query_all_by_placeholder_text<M: Into<Matcher>>(
+    container: &HtmlElement,
+    text: M,
+    options: MatcherOptions,
+) -> Result<Vec<HtmlElement>, QueryError> {
+    query_all_by_attribute("placeholder".to_string(), container, text, options)
+}
+
+fn get_multiple_error(_container: &HtmlElement, text: Matcher) -> String {
+    format!("Found multiple elements with the placeholder text: {text}")
+}
+
+fn get_missing_error(_container: &HtmlElement, text: Matcher) -> String {
+    format!("Unable to find an element with the placeholder text: {text}")
+}
+
+build_queries!(
+    _query_all_by_placeholder_text,
+    get_multiple_error,
+    get_missing_error,
+    placeholder_text
+);
+
+pub use internal::{
+    find_all_by_placeholder_text, find_by_placeholder_text, get_all_by_placeholder_text,
+    get_by_placeholder_text, query_all_by_placeholder_text, query_by_placeholder_text,
+};

packages/dom/tests/element_queries.rs

@@ -46,6 +46,9 @@ fn query_can_return_none() -> Result<(), QueryError> {
     assert!(container_queries
         .query_by_display_value("LucyRicardo", MatcherOptions::default())?
         .is_none());
+    assert!(container_queries
+        .query_by_placeholder_text("LucyRicardo", MatcherOptions::default())?
+        .is_none());
     assert!(container_queries
         .query_by_alt_text("LucyRicardo", MatcherOptions::default())?
         .is_none());
@@ -63,6 +66,18 @@ fn get_throws_a_useful_error_message() -> Result<(), QueryError> {
         container_queries, ..
     } = render("<div></div><!-- Ignored comment --><style type=\"text/css\">body {} </style><script type=\"text/javascript\"></script>", None);
 
+    assert_eq!(
+        Err(QueryError::Element(
+            "Unable to find an element with the placeholder text: LucyRicardo\n\
+            \n\
+            Ignored nodes: comments, script, style\n\
+            <div>\n\
+            <div />\n\
+            </div>"
+                .into()
+        )),
+        container_queries.get_by_placeholder_text("LucyRicardo", MatcherOptions::default())
+    );
     assert_eq!(
         Err(QueryError::Element(
             "Unable to find an element with the alt text: LucyRicardo\n\