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test/unit/model/bin_encoder.js

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+'use strict';
+
+require('../../helper');
+var assert = require('assert');
+
+var ArrayBufferSer = require('../../../app/models/bin_encoder');
+
+describe('ArrayBufferSer', function() {
+
+  it('calculate size for basic types', function() {
+    var b = new ArrayBufferSer(ArrayBufferSer.INT16, [1,2,3,4]);
+    assert.equal(4*2, b.getDataSize());
+
+    b = new ArrayBufferSer(ArrayBufferSer.INT8, [1,2,3,4]);
+    assert.equal(4, b.getDataSize());
+
+    b = new ArrayBufferSer(ArrayBufferSer.INT32, [1,2,3,4]);
+    assert.equal(4*4, b.getDataSize());
+  });
+
+
+  it('calculate size for arrays', function() {
+    var b = new ArrayBufferSer(ArrayBufferSer.STRING, ["test","kease"]);
+    assert.equal((b.headerSize + 4 + 5)*2, b.getDataSize());
+
+    var ba = new ArrayBufferSer(ArrayBufferSer.INT16, [1,2,3,4]);
+    var bc = new ArrayBufferSer(ArrayBufferSer.INT16, [1,4]);
+
+    b = new ArrayBufferSer(ArrayBufferSer.BUFFER, [ba, bc]);
+    assert.equal((b.headerSize + 4 + 2)*2, b.getDataSize());
+    assert.equal(b.type, ArrayBufferSer.BUFFER);
+  });
+
+  function assert_buffer_equals(a, b) {
+    assert.equal(a.length, b.length);
+    for(var i = 0; i < a.length; ++i) {
+      assert.equal(a[i], b[i], "byte i " + i + " is different: " + a[i] + " != " + b[i]);
+    }
+  }
+
+  it('binary data is ok', function() {
+    var b = new ArrayBufferSer(ArrayBufferSer.INT16, [1,2,3,4]);
+    var bf = new Buffer([0, 0, 0, ArrayBufferSer.INT16, 0, 0, 0, 8, 1, 0, 2, 0, 3, 0, 4, 0]);
+    assert_buffer_equals(bf, b.buffer);
+  });
+
+  it('binary data is ok with arrays', function() {
+    var ba = new ArrayBufferSer(ArrayBufferSer.INT16, [1,2, 3, 4]);
+    var bc = new ArrayBufferSer(ArrayBufferSer.INT16, [1,4]);
+
+    var b = new ArrayBufferSer(ArrayBufferSer.BUFFER, [ba, bc]);
+    var bf = new Buffer([
+      0, 0, 0, ArrayBufferSer.BUFFER, // type
+      0, 0, 0, 28,
+      0, 0, 0, ArrayBufferSer.INT16, 0, 0, 0, 8, 1, 0, 2, 0, 3, 0, 4, 0,
+      0, 0, 0, ArrayBufferSer.INT16, 0, 0, 0, 4, 1, 0, 4, 0]);
+    assert_buffer_equals(bf, b.buffer);
+  });
+
+  it('binary data is ok with strings', function() {
+    var s = 'test';
+    var b = new ArrayBufferSer(ArrayBufferSer.STRING, [s]);
+    var bf = new Buffer([
+      0, 0, 0, ArrayBufferSer.STRING, // type
+      0, 0, 0, 16,
+      0, 0, 0, ArrayBufferSer.UINT16,
+      0, 0, 0, 8,
+      s.charCodeAt(0), 0,
+      s.charCodeAt(1), 0,
+      s.charCodeAt(2), 0,
+      s.charCodeAt(3), 0
+    ]);
+    assert_buffer_equals(bf, b.buffer);
+  });
+
+});