Bug 1335272 - add barebones functional test for about:cache, r=ckerschb

MozReview-Commit-ID: 5hlxfmYGgDa

--HG--
extra : rebase_source : f685aeb462fae3d42ffcc1df36af44eef94612f1

netwerk/test/browser/browser.ini

@@ -2,6 +2,7 @@
 support-files =
   dummy.html
 
+[browser_about_cache.js]
 [browser_NetUtil.js]
 [browser_child_resource.js]
 skip-if = e10s && debug && os == "linux" && bits == 64

netwerk/test/browser/browser_about_cache.js

@@ -0,0 +1,71 @@
+"use strict";
+
+/**
+ * Open a dummy page, then open about:cache and verify the opened page shows up in the cache.
+ */
+add_task(function*() {
+  const kRoot = getRootDirectory(gTestPath).replace("chrome://mochitests/content/",
+                                                    "https://example.com/");
+  const kTestPage = kRoot + "dummy.html";
+  // Open the dummy page to get it cached.
+  let tab = yield BrowserTestUtils.openNewForegroundTab(gBrowser, kTestPage, true);
+  yield BrowserTestUtils.removeTab(tab);
+
+  tab = yield BrowserTestUtils.openNewForegroundTab(gBrowser, "about:cache", true);
+  let expectedPageCheck = function(uri) {
+    info("Saw load for " + uri);
+    // Can't easily use searchParms and new URL() because it's an about: URI...
+    return uri.startsWith("about:cache?") && uri.includes("storage=disk");
+  };
+  let diskPageLoaded = BrowserTestUtils.browserLoaded(tab.linkedBrowser, false, expectedPageCheck);
+  yield ContentTask.spawn(tab.linkedBrowser, null, function() {
+    ok(!content.document.nodePrincipal.isSystemPrincipal,
+       "about:cache should not have system principal");
+    let principalURI = content.document.nodePrincipal.URI;
+    let channel = content.document.docShell.currentDocumentChannel;
+    ok(!channel.loadInfo.loadingPrincipal, "Loading principal should be null.");
+    is(principalURI && principalURI.spec, content.document.location.href, "Principal matches location");
+    let links = [... content.document.querySelectorAll("a[href*=disk]")];
+    is(links.length, 1, "Should have 1 link to the disk entries");
+    links[0].click();
+  });
+  yield diskPageLoaded;
+  info("about:cache disk subpage loaded");
+
+  expectedPageCheck = function(uri) {
+    info("Saw load for " + uri);
+    return uri.startsWith("about:cache-entry") && uri.includes("dummy.html");
+  };
+  let triggeringURISpec = tab.linkedBrowser.currentURI.spec;
+  let entryLoaded = BrowserTestUtils.browserLoaded(tab.linkedBrowser, false, expectedPageCheck);
+  yield ContentTask.spawn(tab.linkedBrowser, kTestPage, function(kTestPage) {
+    ok(!content.document.nodePrincipal.isSystemPrincipal,
+       "about:cache with query params should still not have system principal");
+    let principalURI = content.document.nodePrincipal.URI;
+    is(principalURI && principalURI.spec, content.document.location.href, "Principal matches location");
+    let channel = content.document.docShell.currentDocumentChannel;
+    principalURI = channel.loadInfo.triggeringPrincipal.URI;
+    is(principalURI && principalURI.spec, "about:cache", "Triggering principal matches previous location");
+    ok(!channel.loadInfo.loadingPrincipal, "Loading principal should be null.");
+    let links = [... content.document.querySelectorAll("a[href*='" + kTestPage + "']")];
+    is(links.length, 1, "Should have 1 link to the entry for " + kTestPage);
+    links[0].click();
+  });
+  yield entryLoaded;
+  info("about:cache entry loaded");
+
+
+  yield ContentTask.spawn(tab.linkedBrowser, triggeringURISpec, function(triggeringURISpec) {
+    ok(!content.document.nodePrincipal.isSystemPrincipal,
+       "about:cache-entry should also not have system principal");
+    let principalURI = content.document.nodePrincipal.URI;
+    is(principalURI && principalURI.spec, content.document.location.href, "Principal matches location");
+    let channel = content.document.docShell.currentDocumentChannel;
+    principalURI = channel.loadInfo.triggeringPrincipal.URI;
+    is(principalURI && principalURI.spec, triggeringURISpec, "Triggering principal matches previous location");
+    ok(!channel.loadInfo.loadingPrincipal, "Loading principal should be null.");
+    ok(content.document.querySelectorAll("th").length,
+       "Should have several table headers with data.");
+  });
+  yield BrowserTestUtils.removeTab(tab);
+});