Bug 1293067 - Implement a cookie limit warning - tests, r=mayhemer

Differential Revision: https://phabricator.services.mozilla.com/D67330

--HG--
extra : moz-landing-system : lando

netwerk/cookie/test/browser/browser.ini

@@ -16,3 +16,5 @@ support-files = server.sjs
 skip-if = fission #Bug 1582318
 [browser_sameSiteConsole.js]
 support-files = sameSite.sjs
+[browser_oversize.js]
+support-files = oversize.sjs

netwerk/cookie/test/browser/browser_oversize.js

@@ -0,0 +1,94 @@
+const OVERSIZE_DOMAIN = "http://example.com/";
+const OVERSIZE_PATH = "browser/netwerk/cookie/test/browser/";
+const OVERSIZE_TOP_PAGE = OVERSIZE_DOMAIN + OVERSIZE_PATH + "oversize.sjs";
+
+add_task(async _ => {
+  const expected = [];
+
+  const consoleListener = {
+    observe(what) {
+      if (!(what instanceof Ci.nsIConsoleMessage)) {
+        return;
+      }
+
+      info("Console Listener: " + what);
+      for (let i = expected.length - 1; i >= 0; --i) {
+        const e = expected[i];
+
+        if (what.message.includes(e.match)) {
+          ok(true, "Message received: " + e.match);
+          expected.splice(i, 1);
+          e.resolve();
+        }
+      }
+    },
+  };
+
+  Services.console.registerListener(consoleListener);
+
+  registerCleanupFunction(() =>
+    Services.console.unregisterListener(consoleListener)
+  );
+
+  const netPromises = [
+    new Promise(resolve => {
+      expected.push({
+        resolve,
+        match:
+          "Cookie “a” is invalid because its size is too big. Max size is 4096 B.",
+      });
+    }),
+
+    new Promise(resolve => {
+      expected.push({
+        resolve,
+        match:
+          "Cookie “b” is invalid because its path size is too big. Max size is 1024 B.",
+      });
+    }),
+  ];
+
+  // Let's open our tab.
+  const tab = BrowserTestUtils.addTab(gBrowser, OVERSIZE_TOP_PAGE);
+  gBrowser.selectedTab = tab;
+
+  const browser = gBrowser.getBrowserForTab(tab);
+  await BrowserTestUtils.browserLoaded(browser);
+
+  // Let's wait for the first set of console events.
+  await Promise.all(netPromises);
+
+  // the DOM list of events.
+  const domPromises = [
+    new Promise(resolve => {
+      expected.push({
+        resolve,
+        match:
+          "Cookie “d” is invalid because its size is too big. Max size is 4096 B.",
+      });
+    }),
+
+    new Promise(resolve => {
+      expected.push({
+        resolve,
+        match:
+          "Cookie “e” is invalid because its path size is too big. Max size is 1024 B.",
+      });
+    }),
+  ];
+
+  // Let's use document.cookie
+  SpecialPowers.spawn(browser, [], () => {
+    const maxBytesPerCookie = 4096;
+    const maxBytesPerCookiePath = 1024;
+    content.document.cookie = "d=" + Array(maxBytesPerCookie + 1).join("x");
+    content.document.cookie =
+      "e=f; path=/" + Array(maxBytesPerCookiePath + 1).join("x");
+  });
+
+  // Let's wait for the dom events.
+  await Promise.all(domPromises);
+
+  // Let's close the tab.
+  BrowserTestUtils.removeTab(tab);
+});

netwerk/cookie/test/browser/oversize.sjs

@@ -0,0 +1,9 @@
+function handleRequest(aRequest, aResponse) {
+  aResponse.setStatusLine(aRequest.httpVersion, 200);
+
+  const maxBytesPerCookie = 4096;
+  const maxBytesPerCookiePath = 1024;
+
+  aResponse.setHeader("Set-Cookie", "a=" + Array(maxBytesPerCookie + 1).join('x'), true);
+  aResponse.setHeader("Set-Cookie", "b=c; path=/" + Array(maxBytesPerCookiePath + 1).join('x'), true);
+}