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backend/node_modules/restructure/test/Buffer.js

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+const {Buffer:BufferT, DecodeStream, EncodeStream, uint8} = require('../');
+const should = require('chai').should();
+const concat = require('concat-stream');
+
+describe('Buffer', function() {
+  describe('decode', function() {
+    it('should decode', function() {
+      const stream = new DecodeStream(Buffer.from([0xab, 0xff, 0x1f, 0xb6]));
+      const buf = new BufferT(2);
+      buf.decode(stream).should.deep.equal(Buffer.from([0xab, 0xff]));
+      return buf.decode(stream).should.deep.equal(Buffer.from([0x1f, 0xb6]));
+  });
+
+    return it('should decode with parent key length', function() {
+      const stream = new DecodeStream(Buffer.from([0xab, 0xff, 0x1f, 0xb6]));
+      const buf = new BufferT('len');
+      buf.decode(stream, {len: 3}).should.deep.equal(Buffer.from([0xab, 0xff, 0x1f]));
+      return buf.decode(stream, {len: 1}).should.deep.equal(Buffer.from([0xb6]));
+  });
+});
+
+  describe('size', function() {
+    it('should return size', function() {
+      const buf = new BufferT(2);
+      return buf.size(Buffer.from([0xab, 0xff])).should.equal(2);
+    });
+
+    return it('should use defined length if no value given', function() {
+      const array = new BufferT(10);
+      return array.size().should.equal(10);
+    });
+  });
+
+  return describe('encode', function() {
+    it('should encode', function(done) {
+      const stream = new EncodeStream;
+      stream.pipe(concat(function(buf) {
+        buf.should.deep.equal(Buffer.from([0xab, 0xff, 0x1f, 0xb6]));
+        return done();
+      })
+      );
+
+      const buf = new BufferT(2);
+      buf.encode(stream, Buffer.from([0xab, 0xff]));
+      buf.encode(stream, Buffer.from([0x1f, 0xb6]));
+      return stream.end();
+    });
+
+    return it('should encode length before buffer', function(done) {
+      const stream = new EncodeStream;
+      stream.pipe(concat(function(buf) {
+        buf.should.deep.equal(Buffer.from([2, 0xab, 0xff]));
+        return done();
+      })
+      );
+
+      const buf = new BufferT(uint8);
+      buf.encode(stream, Buffer.from([0xab, 0xff]));
+      return stream.end();
+    });
+  });
+});