1 files changed, 72 insertions, 0 deletions
diff --git a/dom/cache/test/xpcshell/test_padding_error_handle.js b/dom/cache/test/xpcshell/test_padding_error_handle.js
new file mode 100644
index 0000000000..e376ef63c0
--- /dev/null
+++ b/dom/cache/test/xpcshell/test_padding_error_handle.js
@@ -0,0 +1,72 @@
+/**
+ *  This test is mainly to verify cache actions work as usual even there exists
+ *  an unexpected padding file.
+ */
+
+function getTempPaddingFilePath() {
+  let cacheDir = getCacheDir();
+  let temporaryPaddingFile = cacheDir.clone();
+  temporaryPaddingFile.append(".padding-tmp");
+  return temporaryPaddingFile;
+}
+
+function createTempPaddingFile() {
+  let temporaryPaddingFile = getTempPaddingFilePath();
+  temporaryPaddingFile.create(Ci.nsIFile.NORMAL_FILE_TYPE, parseInt("0644", 8));
+
+  ok(
+    temporaryPaddingFile.exists(),
+    "Temporary padding file does be created by test"
+  );
+}
+
+add_task(async function testSteps() {
+  create_test_profile("schema_25_profile.zip");
+  let cache = await caches.open("test");
+
+  // Step 1: Verify cache.match won't fail when there is a temporary padding
+  // file
+  createTempPaddingFile();
+
+  let response = await cache.match("https://www.mozilla.org");
+  ok(!!response, "Upgrade from 25 to 26 do succeed");
+
+  // Note: Only cache write actions(e.g. cache.put/add/addAll/delete) will
+  // remove unexpected temporary padding file when writting an opaque response
+  // into the file-system. Cache read actions(e.g. cache.keys/match) won't.
+  let temporaryPaddingFile = getTempPaddingFilePath();
+  ok(
+    temporaryPaddingFile.exists(),
+    "Temporary padding file doesn't be removed by cache.match"
+  );
+
+  // Step 2: Verify cache.put won't fail when there is a temporary padding
+  // file
+  await cache.put("https://foo.com", response);
+  ok(
+    !temporaryPaddingFile.exists(),
+    "Temporary padding file does be removed by cache.put"
+  );
+
+  // Step 3: Verify cache.keys won't fail when there is a temporary padding
+  // file
+  createTempPaddingFile();
+
+  let cacheEntries = await cache.keys("https://foo.com");
+  Assert.strictEqual(cacheEntries.length, 1, "Cache.put does succeed");
+
+  ok(
+    temporaryPaddingFile.exists(),
+    "Temporary padding file doesn't be removed by cache.keys"
+  );
+
+  // Step 4: Verify cache.delete won't fail when there is a temporary padding
+  // file
+  await cache.delete("https://foo.com");
+  ok(
+    !temporaryPaddingFile.exists(),
+    "Temporary padding file does be removed by cache.delete"
+  );
+
+  await caches.delete("test");
+});