415gotit

node_modules/msgpack-lite/test/23.extbuffer.js

@@ -0,0 +1,79 @@
+#!/usr/bin/env mocha -R spec
+
+/*jshint -W053 */
+
+var assert = require("assert");
+var msgpackJS = "../index";
+var isBrowser = ("undefined" !== typeof window);
+var msgpack = isBrowser && window.msgpack || require(msgpackJS);
+var TITLE = __filename.replace(/^.*\//, "");
+
+var HAS_UINT8ARRAY = ("undefined" !== typeof Uint8Array);
+
+describe(TITLE, function() {
+  it("ExtBuffer (0x00)", function() {
+    testExtBuffer(0);
+  });
+
+  it("ExtBuffer (0x20-0xFF)", function() {
+    for (var i = 32; i < 256; i++) {
+      testExtBuffer(i);
+    }
+  });
+
+  it("ExtBuffer Array (0x20-0xFF)", function() {
+    for (var i = 32; i < 256; i++) {
+      testExtBufferArray(i);
+    }
+  });
+
+  function testExtBuffer(type) {
+    // fixext 8 -- 0xd7
+    var header = new Buffer([0xd7, type]);
+    var content = new Buffer(8);
+    for (var i = 0; i < 8; i++) {
+      content[i] = (type + i) & 0x7F;
+    }
+    var source = Buffer.concat([header, content]);
+    var decoded = msgpack.decode(source);
+    assert.equal(decoded.type, type);
+    assert.equal(decoded.buffer.length, content.length);
+    assert.deepEqual(toArray(decoded.buffer), toArray(content));
+    var encoded = msgpack.encode(decoded);
+    assert.deepEqual(toArray(encoded), toArray(source));
+  }
+
+  // Unpack and re-pack an array of extension types.
+  // Tests, among other things, that the right number of bytes are
+  // consumed with each ext type read.
+  function testExtBufferArray(type) {
+    function content(j) {
+        var x = j * type;
+        return Buffer([x & 0x7F, (x + 1) & 0x7F]);
+    }
+    // fixarray len 10
+    var arrayHeader = new Buffer([0x9a]);
+    var fullBuffer = arrayHeader;
+    for (var j = 0; j < 10; j++) {
+      // fixext 2 -- 0xd5
+      var header = new Buffer([0xd5, type]);
+      fullBuffer = Buffer.concat([fullBuffer, header, content(j)]);
+    }
+    var decoded = msgpack.decode(fullBuffer);
+    assert.equal(true, decoded instanceof Array);
+    assert.equal(decoded.length, 10);
+    for (j = 0; j < 10; j++) {
+      assert.equal(decoded[j].type, type);
+      assert.equal(decoded[j].buffer.length, 2);
+      assert.deepEqual(decoded[j].buffer, content(j));
+    }
+    var encoded = msgpack.encode(decoded);
+    assert.deepEqual(encoded, fullBuffer);
+  }
+
+});
+
+function toArray(array) {
+  if (HAS_UINT8ARRAY && array instanceof ArrayBuffer) array = new Uint8Array(array);
+  return Array.prototype.slice.call(array);
+}