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backend/node_modules/restructure/test/Enum.js

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+const {Enum, uint8, DecodeStream, EncodeStream} = require('../');
+const should = require('chai').should();
+const concat = require('concat-stream');
+
+describe('Enum', function() {
+  const e = new Enum(uint8, ['foo', 'bar', 'baz']);
+  it('should have the right size', () => e.size().should.equal(1));
+
+  it('should decode', function() {
+    const stream = new DecodeStream(Buffer.from([1, 2, 0]));
+    e.decode(stream).should.equal('bar');
+    e.decode(stream).should.equal('baz');
+    return e.decode(stream).should.equal('foo');
+  });
+
+  it('should encode', function(done) {
+    const stream = new EncodeStream;
+    stream.pipe(concat(function(buf) {
+      buf.should.deep.equal(Buffer.from([1, 2, 0]));
+      return done();
+    })
+    );
+
+    e.encode(stream, 'bar');
+    e.encode(stream, 'baz');
+    e.encode(stream, 'foo');
+    return stream.end();
+  });
+
+  return it('should throw on unknown option', function() {
+    const stream = new EncodeStream;
+    return should.throw(() => e.encode(stream, 'unknown'));
+  });
+});