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node_modules/restructure/test/Enum.js

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+import assert from 'assert';
+import {Enum, uint8, DecodeStream, EncodeStream} from 'restructure';
+
+describe('Enum', function() {
+  const e = new Enum(uint8, ['foo', 'bar', 'baz']);
+  it('should have the right size', () => assert.equal(e.size(), 1));
+
+  it('should decode', function() {
+    const stream = new DecodeStream(new Uint8Array([1, 2, 0]));
+    assert.equal(e.decode(stream), 'bar');
+    assert.equal(e.decode(stream), 'baz');
+    assert.equal(e.decode(stream), 'foo');
+  });
+
+  it('should encode', function() {
+    assert.deepEqual(e.toBuffer('bar'), new Uint8Array([1]));
+    assert.deepEqual(e.toBuffer('baz'), new Uint8Array([2]));
+    assert.deepEqual(e.toBuffer('foo'), new Uint8Array([0]));
+  });
+
+  it('should throw on unknown option', function() {
+    return assert.throws(() => e.toBuffer('unknown'));
+  });
+});