1 files changed, 18 insertions, 0 deletions
diff --git a/testing/web-platform/tests/fetch/content-length/parsing.window.js b/testing/web-platform/tests/fetch/content-length/parsing.window.js
new file mode 100644
index 0000000000..5028ad943d
--- /dev/null
+++ b/testing/web-platform/tests/fetch/content-length/parsing.window.js
@@ -0,0 +1,18 @@
+promise_test(() => {
+  return fetch("resources/content-lengths.json").then(res => res.json()).then(runTests);
+}, "Loading JSON…");
+
+function runTests(testUnits) {
+  testUnits.forEach(({ input, output }) => {
+    promise_test(t => {
+      const result = fetch(`resources/content-length.py?length=${encodeURIComponent(input)}`);
+      if (output === null) {
+        return promise_rejects_js(t, TypeError, result);
+      } else {
+        return result.then(res => res.text()).then(text => {
+          assert_equals(text.length, output);
+        });
+      }
+    }, `Input: ${format_value(input)}. Expected: ${output === null ? "network error" : output}.`);
+  });
+}