[ServiceWorker] Tests for Cache

LayoutTests/http/tests/serviceworker/cache-put-expected.txt

Index: LayoutTests/http/tests/serviceworker/cache-put-expected.txt
diff --git a/LayoutTests/http/tests/serviceworker/cache-put-expected.txt b/LayoutTests/http/tests/serviceworker/cache-put-expected.txt
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+This is a testharness.js-based test.
+PASS Service Worker: Cache.put 
+FAIL Cache.put with a valid request Entry was not found.
+FAIL Cache.put with an existing request Entry was not found.
+PASS Cache.put with a request string 
+PASS Cache.put with a request string 
+FAIL Cache.put with a relative URL assert_equals: Cache.put should accept a relative URL as the request. :[object].url expected "" but got "http://127.0.0.1:8000/serviceworker/resources/relative-url"
+FAIL Cache.put with a non-GET request assert_promise_rejects: Cache.put should throw a TypeError for non-GET requests. Promise did not reject.
+FAIL Cache.put with an empty response assert_throws: Cache.put should throw a TypeError for an empty response. function "function () { throw e; }" threw object "NotFoundError: Entry was not found." ("NotFoundError") expected object "TypeError" ("TypeError")
+Harness: the test ran to completion.
+