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+/**
+ * Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/
+ */
+
+// This test is mainly to verify that we are able to recover from a situation
+// in which the padding file and the padding column are missing during origin
+// initialization. This was originally reported in bug 1425146 comment 39.
+// The situation can be described as follows:
+// 1. A profile is used in FF57. The storage version is 2.1. There's no cache
+// storage for http://www.mozilla.org
+// 2. The same profile is used in FF56. The storage version is still 2.1 which
+// doesn't prevent storage system from working since minor upgrades are
+// backwards-compatible. The cache storage for http://www.mozilla.org is
+// created with schema version 25 (without any padding stuff).
+// 3. The profile is used in FF57 again. Zero padding files for existing cache
+// storages are not created because storage is already at version 2.1.
+// Storage is being initialized and a missing padding file triggers padding
+// size computation from the cache database with schema version 25. Since
+// the computation happens before any real DOM cache operation, the database
+// is not upgraded to schema version 26, so the padding column is missing.
+
+add_task(async function testSteps() {
+ // The profile contains one cache storage, a script for cache creation and
+ // the storage database:
+ // - storage/default/http+++www.mozilla.org/cache
+ // - create_cache.js
+ // - storage.sqlite
+ // The file create_cache.js in the package was run locally, specifically it
+ // was temporarily added to xpcshell.ini and then executed:
+ // mach xpcshell-test --interactive dom/cache/test/xpcshell/create_cache.js
+ // Note: it must be executed in FF56 and it only creates the directory
+ // "storage/default/chrome/cache" and the file "storage.sqlite". To make it
+ // become the profile in the test, additional manual steps are needed.
+ // 1. Create "http+++www.mozilla.org" folder under the ""storage/default".
+ // 2. Copy the "cache" folder under the "storage/default/chrome" to
+ // "storage/default/http+++www.mozilla.org".
+ // 3. Remove the folder "storage/default/chrome"
+ // 4. Remove the folder "storage/temporary".
+ // 5. Add "create_cache.js".
+ // 6. Replace the "storage.sqlite" created by FF56 (storage v2.0) with the
+ // "storage.sqlite" created by FF57 (storage v2.1)
+ create_test_profile("bug1425146_profile.zip");
+
+ try {
+ await caches.open("test");
+ ok(true, "Should not have thrown");
+ } catch (ex) {
+ ok(false, "Should not have thrown");
+ }
+});