1 files changed, 136 insertions, 0 deletions
diff --git a/netwerk/test/browser/browser_about_cache.js b/netwerk/test/browser/browser_about_cache.js
new file mode 100644
index 0000000000..9e9b2467d5
--- /dev/null
+++ b/netwerk/test/browser/browser_about_cache.js
@@ -0,0 +1,136 @@
+"use strict";
+
+/**
+ * Open a dummy page, then open about:cache and verify the opened page shows up in the cache.
+ */
+add_task(async function () {
+  await SpecialPowers.pushPrefEnv({
+    set: [["privacy.partition.network_state", false]],
+  });
+
+  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 = await BrowserTestUtils.openNewForegroundTab(
+    gBrowser,
+    kTestPage,
+    true
+  );
+  BrowserTestUtils.removeTab(tab);
+
+  tab = await 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
+  );
+  await SpecialPowers.spawn(tab.linkedBrowser, [], function () {
+    ok(
+      !content.document.nodePrincipal.isSystemPrincipal,
+      "about:cache should not have system principal"
+    );
+    let principal = content.document.nodePrincipal;
+    let channel = content.docShell.currentDocumentChannel;
+    ok(!channel.loadInfo.loadingPrincipal, "Loading principal should be null.");
+    is(
+      principal.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();
+  });
+  await 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
+  );
+  await SpecialPowers.spawn(
+    tab.linkedBrowser,
+    [kTestPage],
+    function (kTestPage) {
+      ok(
+        !content.document.nodePrincipal.isSystemPrincipal,
+        "about:cache with query params should still not have system principal"
+      );
+      let principal = content.document.nodePrincipal;
+      is(
+        principal.spec,
+        content.document.location.href,
+        "Principal matches location"
+      );
+      let channel = content.docShell.currentDocumentChannel;
+      principal = channel.loadInfo.triggeringPrincipal;
+      is(
+        principal.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();
+    }
+  );
+  await entryLoaded;
+  info("about:cache entry loaded");
+
+  await SpecialPowers.spawn(
+    tab.linkedBrowser,
+    [triggeringURISpec],
+    function (triggeringURISpec) {
+      ok(
+        !content.document.nodePrincipal.isSystemPrincipal,
+        "about:cache-entry should also not have system principal"
+      );
+      let principal = content.document.nodePrincipal;
+      is(
+        principal.spec,
+        content.document.location.href,
+        "Principal matches location"
+      );
+      let channel = content.docShell.currentDocumentChannel;
+      principal = channel.loadInfo.triggeringPrincipal;
+      is(
+        principal.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."
+      );
+    }
+  );
+  BrowserTestUtils.removeTab(tab);
+});