Update (#918)

Prepare to use copybara worklow.

1 files changed, 72 insertions, 0 deletions

diff --git a/js/bundle_test.js b/js/bundle_test.js
new file mode 100644
index 0000000..6567a3d
--- /dev/null
+++ b/js/bundle_test.js
@@ -0,0 +1,72 @@
+/* Copyright 2017 Google Inc. All Rights Reserved.
+
+   Distributed under MIT license.
+   See file LICENSE for detail or copy at https://opensource.org/licenses/MIT
+*/
+import {BrotliDecode} from "./decode.js";
+import {makeTestData} from "./test_data.js";
+goog.require('goog.testing.asserts');
+const testSuite = goog.require('goog.testing.testSuite');
+
+const CRC_64_POLY = new Uint32Array([0xD7870F42, 0xC96C5795]);
+
+/**
+ * Calculates binary data footprint.
+ *
+ * @param {!Int8Array} data binary data
+ * @return {string} footprint
+ */
+function calculateCrc64(data) {
+  let crc = new Uint32Array([0xFFFFFFFF, 0xFFFFFFFF]);
+  let c = new Uint32Array(2);
+  for (let i = 0; i < data.length; ++i) {
+    c[1] = 0;
+    c[0] = (crc[0] ^ data[i]) & 0xFF;
+    for (let k = 0; k < 8; ++k) {
+      const isOdd = c[0] & 1;
+      c[0] = (c[0] >>> 1) | ((c[1] & 1) << 31);
+      c[1] = c[1] >>> 1;
+      if (isOdd) {
+        c[0] = c[0] ^ CRC_64_POLY[0];
+        c[1] = c[1] ^ CRC_64_POLY[1];
+      }
+    }
+    crc[0] = ((crc[0] >>> 8) | ((crc[1] & 0xFF) << 24)) ^ c[0];
+    crc[1] = (crc[1] >>> 8) ^ c[1];
+  }
+  crc[0] = ~crc[0];
+  crc[1] = ~crc[1];
+
+  let lo = crc[0].toString(16);
+  lo = "0".repeat(8 - lo.length) + lo;
+  let hi = crc[1].toString(16);
+  hi = "0".repeat(8 - hi.length) + hi;
+
+  return hi + lo;
+}
+
+/**
+ * Decompresses data and checks that output footprint is correct.
+ *
+ * @param {string} entry filename including footprint prefix
+ * @param {!Int8Array} data compressed data
+ */
+function checkEntry(entry, data) {
+  const expectedCrc = entry.substring(0, 16);
+  const decompressed = BrotliDecode(data);
+  const crc = calculateCrc64(decompressed);
+  assertEquals(expectedCrc, crc);
+}
+
+let allTests = {};
+const testData = makeTestData();
+for (let entry in testData) {
+  if (!testData.hasOwnProperty(entry)) {
+    continue;
+  }
+  const name = entry.substring(17);
+  const data = testData[entry];
+  allTests['test_' + name] = checkEntry.bind(null, entry, data);
+}
+
+testSuite(allTests);