1 files changed, 57 insertions, 0 deletions
diff --git a/testing/web-platform/tests/html/semantics/forms/the-input-element/selection-weekmonth.html b/testing/web-platform/tests/html/semantics/forms/the-input-element/selection-weekmonth.html
new file mode 100644
index 0000000000..c0d36dded9
--- /dev/null
+++ b/testing/web-platform/tests/html/semantics/forms/the-input-element/selection-weekmonth.html
@@ -0,0 +1,57 @@
+<!DOCTYPE HTML>
+<title>Input element programmatic selection support</title>
+<link rel="author" title="yaycmyk" href="mailto:evan@yaycmyk.com">
+<link rel="help" href="https://html.spec.whatwg.org/multipage/forms.html#dom-textarea/input-select">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="log"></div>
+<script>
+
+/* all textual, non-hidden inputs support .select() */
+test(function() {
+  var valid = [
+    "month",
+    "week",
+  ];
+
+  valid.forEach(function(type) {
+    test(function() {
+      var input = document.createElement("input");
+      var a;
+
+      input.type = type;
+      assert_equals(input.type, type, "the given input type is not supported");
+
+      input.select();
+
+    }, "input type " + type + " should support the select() method");
+  });
+});
+
+/* only certain input types are allowed to have a variable-length selection */
+test(function() {
+  var invalid = [
+    "month",
+    "week",
+  ];
+
+  invalid.forEach(function(type) {
+    test(function() {
+      var input = document.createElement("input");
+
+      input.type = type;
+      assert_equals(input.type, type, "the given input type is not supported");
+
+      assert_equals(input.selectionStart, null, 'getting input.selectionStart');
+      assert_throws_dom("INVALID_STATE_ERR", function() { input.selectionStart = 0; });
+      assert_equals(input.selectionEnd, null, 'getting input.selectionEnd');
+      assert_throws_dom("INVALID_STATE_ERR", function() { input.selectionEnd = 0; });
+      assert_equals(input.selectionDirection, null, 'getting input.selectionDirection');
+      assert_throws_dom("INVALID_STATE_ERR", function() { input.selectionDirection = "none"; });
+      assert_throws_dom("INVALID_STATE_ERR", function() { input.setSelectionRange(0, 0); });
+      assert_throws_dom("INVALID_STATE_ERR", function() { input.setRangeText('', 0, 0); });
+
+    }, "input type " + type + " should not support variable-length selections");
+  });
+});
+</script>