Adding upstream version 115.8.0esr.upstream/115.8.0esr

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 81 insertions, 0 deletions

diff --git a/testing/web-platform/tests/performance-timeline/droppedentriescount.any.js b/testing/web-platform/tests/performance-timeline/droppedentriescount.any.js
new file mode 100644
index 0000000000..4de816bdc4
--- /dev/null
+++ b/testing/web-platform/tests/performance-timeline/droppedentriescount.any.js
@@ -0,0 +1,81 @@
+promise_test(t => {
+  // This setup is required for later tests as well.
+  // Await for a dropped entry.
+  return new Promise(res => {
+    // Set a buffer size of 0 so that new resource entries count as dropped.
+    performance.setResourceTimingBufferSize(0);
+    // Use an observer to make sure the promise is resolved only when the
+    // new entry has been created.
+    new PerformanceObserver(res).observe({type: 'resource'});
+    fetch('resources/square.png?id=1');
+  }).then(() => {
+  return new Promise(resolve => {
+    new PerformanceObserver(t.step_func((entries, obs, options) => {
+      assert_equals(options['droppedEntriesCount'], 0);
+      resolve();
+    })).observe({type: 'mark'});
+    performance.mark('test');
+  })});
+}, 'Dropped entries count is 0 when there are no dropped entries of relevant type.');
+
+promise_test(async t => {
+  return new Promise(resolve => {
+    new PerformanceObserver(t.step_func((entries, obs, options) => {
+      assert_equals(options['droppedEntriesCount'], 1);
+      resolve();
+    })).observe({entryTypes: ['mark', 'resource']});
+    performance.mark('meow');
+  });
+}, 'Dropped entries correctly counted with multiple types.');
+
+promise_test(t => {
+  return new Promise(resolve => {
+    new PerformanceObserver(t.step_func((entries, obs, options) => {
+      assert_equals(options['droppedEntriesCount'], 1,
+          'There should have been some dropped resource timing entries at this point');
+      resolve();
+    })).observe({type: 'resource', buffered: true});
+  });
+}, 'Dropped entries counted even if observer was not registered at the time.');
+
+promise_test(t => {
+  return new Promise(resolve => {
+    let callback_ran = false;
+    new PerformanceObserver(t.step_func((entries, obs, options) => {
+      if (!callback_ran) {
+        assert_equals(options['droppedEntriesCount'], 2,
+            'There should be two dropped entries right now.');
+        fetch('resources/square.png?id=3');
+        callback_ran = true;
+      } else {
+        assert_equals(options['droppedEntriesCount'], undefined,
+            'droppedEntriesCount should be unset after the first callback!');
+        resolve();
+      }
+    })).observe({type: 'resource'});
+    fetch('resources/square.png?id=2');
+  });
+}, 'Dropped entries only surfaced on the first callback.');
+
+
+promise_test(t => {
+  return new Promise(resolve => {
+    let callback_ran = false;
+    let droppedEntriesCount = -1;
+    new PerformanceObserver(t.step_func((entries, obs, options) => {
+      if (!callback_ran) {
+        assert_greater_than(options['droppedEntriesCount'], 0,
+            'There should be several dropped entries right now.');
+        droppedEntriesCount = options['droppedEntriesCount'];
+        callback_ran = true;
+        obs.observe({type: 'mark'});
+        performance.mark('woof');
+      } else {
+        assert_equals(options['droppedEntriesCount'], droppedEntriesCount,
+            'There should be droppedEntriesCount due to the new observe().');
+        resolve();
+      }
+    })).observe({type: 'resource'});
+    fetch('resources/square.png?id=4');
+  });
+}, 'Dropped entries surfaced after an observe() call!');