1 files changed, 128 insertions, 0 deletions
diff --git a/testing/web-platform/tests/fetch/fetch-later/quota.tentative.https.window.js b/testing/web-platform/tests/fetch/fetch-later/quota.tentative.https.window.js
new file mode 100644
index 0000000000..1b5b85563d
--- /dev/null
+++ b/testing/web-platform/tests/fetch/fetch-later/quota.tentative.https.window.js
@@ -0,0 +1,128 @@
+// META: script=/common/get-host-info.sub.js
+// META: script=/common/utils.js
+// META: script=/pending-beacon/resources/pending_beacon-helper.js
+
+'use strict';
+
+const kQuotaPerOrigin = 64 * 1024;  // 64 kilobytes per spec.
+const {ORIGIN, HTTPS_NOTSAMESITE_ORIGIN} = get_host_info();
+
+// Runs a test case that cover a single fetchLater() call with `body` in its
+// request payload. The call is not expected to throw any errors.
+function fetchLaterPostTest(body, description) {
+  test(() => {
+    const controller = new AbortController();
+    const result = fetchLater(
+        '/fetch-later',
+        {method: 'POST', signal: controller.signal, body: body});
+    assert_false(result.activated);
+    // Release quota taken by the pending request for subsequent tests.
+    controller.abort();
+  }, description);
+}
+
+// Test small payload for each supported data types.
+for (const [dataType, skipCharset] of Object.entries(
+         BeaconDataTypeToSkipCharset)) {
+  fetchLaterPostTest(
+      makeBeaconData(generateSequentialData(0, 1024, skipCharset), dataType),
+      `A fetchLater() call accept small data in POST request of ${dataType}.`);
+}
+
+// Test various size of payloads for the same origin.
+for (const dataType in BeaconDataType) {
+  if (dataType !== BeaconDataType.FormData &&
+      dataType !== BeaconDataType.URLSearchParams) {
+    // Skips FormData & URLSearchParams, as browser adds extra bytes to them
+    // in addition to the user-provided content. It is difficult to test a
+    // request right at the quota limit.
+    fetchLaterPostTest(
+        // Generates data that is exactly 64 kilobytes.
+        makeBeaconData(generatePayload(kQuotaPerOrigin), dataType),
+        `A single fetchLater() call takes up the per-origin quota for its ` +
+            `body of ${dataType}.`);
+  }
+}
+
+// Test empty payload.
+for (const dataType in BeaconDataType) {
+  test(
+      () => {
+        assert_throws_js(
+            TypeError, () => fetchLater('/', {method: 'POST', body: ''}));
+      },
+      `A single fetchLater() call does not accept empty data in POST request ` +
+          `of ${dataType}.`);
+}
+
+// Test oversized payload.
+for (const dataType in BeaconDataType) {
+  test(
+      () => {
+        assert_throws_dom(
+            'QuotaExceededError',
+            () => fetchLater('/fetch-later', {
+              method: 'POST',
+              // Generates data that exceeds 64 kilobytes.
+              body:
+                  makeBeaconData(generatePayload(kQuotaPerOrigin + 1), dataType)
+            }));
+      },
+      `A single fetchLater() call is not allowed to exceed per-origin quota ` +
+          `for its body of ${dataType}.`);
+}
+
+// Test accumulated oversized request.
+for (const dataType in BeaconDataType) {
+  test(
+      () => {
+        const controller = new AbortController();
+        // Makes the 1st call that sends only half of allowed quota.
+        fetchLater('/fetch-later', {
+          method: 'POST',
+          signal: controller.signal,
+          body: makeBeaconData(generatePayload(kQuotaPerOrigin / 2), dataType)
+        });
+
+        // Makes the 2nd call that sends half+1 of allowed quota.
+        assert_throws_dom('QuotaExceededError', () => {
+          fetchLater('/fetch-later', {
+            method: 'POST',
+            signal: controller.signal,
+            body: makeBeaconData(
+                generatePayload(kQuotaPerOrigin / 2 + 1), dataType)
+          });
+        });
+        // Release quota taken by the pending requests for subsequent tests.
+        controller.abort();
+      },
+      `The 2nd fetchLater() call is not allowed to exceed per-origin quota ` +
+          `for its body of ${dataType}.`);
+}
+
+// Test various size of payloads across different origins.
+for (const dataType in BeaconDataType) {
+  test(
+      () => {
+        const controller = new AbortController();
+        // Makes the 1st call that sends only half of allowed quota.
+        fetchLater('/fetch-later', {
+          method: 'POST',
+          signal: controller.signal,
+          body: makeBeaconData(generatePayload(kQuotaPerOrigin / 2), dataType)
+        });
+
+        // Makes the 2nd call that sends half+1 of allowed quota, but to a
+        // different origin.
+        fetchLater(`${HTTPS_NOTSAMESITE_ORIGIN}/fetch-later`, {
+          method: 'POST',
+          signal: controller.signal,
+          body:
+              makeBeaconData(generatePayload(kQuotaPerOrigin / 2 + 1), dataType)
+        });
+        // Release quota taken by the pending requests for subsequent tests.
+        controller.abort();
+      },
+      `The 2nd fetchLater() call to another origin does not exceed per-origin` +
+          ` quota for its body of ${dataType}.`);
+}