first pass of merging in warp (doesn't build)

app/src/terminal/share_block_modal_tests.rs

@@ -0,0 +1,17 @@
+use warpui::browser::escape_html_attribute;
+
+#[test]
+fn escape_html_attribute_escapes_attribute_breakout_characters() {
+    assert_eq!(
+        escape_html_attribute("\" onload=\"alert(1)\" data-x='><script>alert(1)</script>&"),
+        "&quot; onload=&quot;alert(1)&quot; data-x=&#39;&gt;&lt;script&gt;alert(1)&lt;/script&gt;&amp;"
+    );
+}
+
+#[test]
+fn escape_html_attribute_leaves_safe_text_unchanged() {
+    assert_eq!(
+        escape_html_attribute("embedded warp block"),
+        "embedded warp block"
+    );
+}