1 files changed, 86 insertions, 0 deletions
diff --git a/toolkit/mozapps/extensions/test/xpcshell/test_cacheflush.js b/toolkit/mozapps/extensions/test/xpcshell/test_cacheflush.js
new file mode 100644
index 0000000000..f6039b29bf
--- /dev/null
+++ b/toolkit/mozapps/extensions/test/xpcshell/test_cacheflush.js
@@ -0,0 +1,86 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/
+ */
+
+// This verifies that flushing the zipreader cache happens when appropriate
+
+var gExpectedFile = null;
+var gCacheFlushCount = 0;
+
+var CacheFlushObserver = {
+  observe(aSubject, aTopic, aData) {
+    if (aTopic != "flush-cache-entry") {
+      return;
+    }
+
+    // Ignore flushes from the fake cert DB or extension-process-script
+    if (aData == "cert-override" || aSubject == null) {
+      return;
+    }
+
+    if (!gExpectedFile) {
+      return;
+    }
+    ok(aSubject instanceof Ci.nsIFile);
+    equal(aSubject.path, gExpectedFile.path);
+    gCacheFlushCount++;
+  },
+};
+
+add_task(async function setup() {
+  Services.obs.addObserver(CacheFlushObserver, "flush-cache-entry");
+  createAppInfo("xpcshell@tests.mozilla.org", "XPCShell", "1", "2");
+
+  await promiseStartupManager();
+});
+
+// Tests that the cache is flushed when installing a restartless add-on
+add_task(async function test_flush_restartless_install() {
+  let xpi = await createTempWebExtensionFile({
+    manifest: {
+      name: "Cache Flush Test",
+      version: "2.0",
+      browser_specific_settings: { gecko: { id: "addon2@tests.mozilla.org" } },
+    },
+  });
+
+  let install = await AddonManager.getInstallForFile(xpi);
+
+  await new Promise(resolve => {
+    install.addListener({
+      onInstallStarted() {
+        // We should flush the staged XPI when completing the install
+        gExpectedFile = gProfD.clone();
+        gExpectedFile.append("extensions");
+        gExpectedFile.append("staged");
+        gExpectedFile.append("addon2@tests.mozilla.org.xpi");
+      },
+
+      onInstallEnded() {
+        equal(gCacheFlushCount, 1);
+        gExpectedFile = null;
+        gCacheFlushCount = 0;
+
+        resolve();
+      },
+    });
+
+    install.install();
+  });
+});
+
+// Tests that the cache is flushed when uninstalling a restartless add-on
+add_task(async function test_flush_uninstall() {
+  let addon = await AddonManager.getAddonByID("addon2@tests.mozilla.org");
+
+  // We should flush the installed XPI when uninstalling
+  gExpectedFile = gProfD.clone();
+  gExpectedFile.append("extensions");
+  gExpectedFile.append("addon2@tests.mozilla.org.xpi");
+
+  await addon.uninstall();
+
+  ok(gCacheFlushCount >= 1);
+  gExpectedFile = null;
+  gCacheFlushCount = 0;
+});