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-rw-r--r--testing/web-platform/tests/loading/preloader-link-media.tentative.html33
1 files changed, 33 insertions, 0 deletions
diff --git a/testing/web-platform/tests/loading/preloader-link-media.tentative.html b/testing/web-platform/tests/loading/preloader-link-media.tentative.html
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+++ b/testing/web-platform/tests/loading/preloader-link-media.tentative.html
@@ -0,0 +1,33 @@
+<!doctype html>
+<meta charset="utf-8">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="resources/dummy.js?pipe=trickle(d1)"></script>
+<link rel="stylesheet" media="print" href="resources/dummy.css?print">
+<link rel="stylesheet" href="resources/dummy.css?non-print">
+<script>
+ let t = async_test("Non-matching link media is not preloaded");
+ window.addEventListener("load", t.step_func_done(function() {
+ let entries = performance.getEntriesByType('resource');
+ let found_print = null;
+ let found_non_print = null;
+ for (let entry of entries) {
+ if (entry.name.includes("?print")) {
+ assert_equals(found_print, null);
+ found_print = entry.startTime;
+ }
+ if (entry.name.includes("?non-print")) {
+ assert_equals(found_non_print, null);
+ found_non_print = entry.startTime;
+ }
+ }
+ assert_not_equals(found_print, null, "Should've loaded print sheet");
+ assert_not_equals(found_non_print, null, "Should've loaded non-print sheet");
+ // We can assert_greater_than (rather than greater_than_equal) because if
+ // the non-print sheet has been preloaded but the print one hasn't, we have
+ // the trickle mechanism to try to guarantee that enough time has passed
+ // between one load and the next.
+ assert_greater_than(found_print, found_non_print, "Non-print sheet should've started loading before print sheet")
+ }));
+</script>
+