descargar pdf y fotos

2026-06-09 08:25:57 -05:00
parent 0a9c672c75
commit b19deda02c
4404 changed files with 664668 additions and 84 deletions
@@ -0,0 +1,167 @@
+const {String:StringT, uint8, DecodeStream, EncodeStream} = require('../');
+const should = require('chai').should();
+const concat = require('concat-stream');
+
+describe('String', function() {
+  describe('decode', function() {
+    it('should decode fixed length', function() {
+      const stream = new DecodeStream(Buffer.from('testing'));
+      const string = new StringT(7);
+      return string.decode(stream).should.equal('testing');
+    });
+
+    it('should decode length from parent key', function() {
+      const stream = new DecodeStream(Buffer.from('testing'));
+      const string = new StringT('len');
+      return string.decode(stream, {len: 7}).should.equal('testing');
+    });
+
+    it('should decode length as number before string', function() {
+      const stream = new DecodeStream(Buffer.from('\x07testing'));
+      const string = new StringT(uint8);
+      return string.decode(stream).should.equal('testing');
+    });
+
+    it('should decode utf8', function() {
+      const stream = new DecodeStream(Buffer.from('🍻'));
+      const string = new StringT(4, 'utf8');
+      return string.decode(stream).should.equal('🍻');
+    });
+
+    it('should decode encoding computed from function', function() {
+      const stream = new DecodeStream(Buffer.from('🍻'));
+      const string = new StringT(4, function() { return 'utf8'; });
+      return string.decode(stream).should.equal('🍻');
+    });
+
+    it('should decode null-terminated string and read past terminator', function() {
+      const stream = new DecodeStream(Buffer.from('🍻\x00'));
+      const string = new StringT(null, 'utf8');
+      string.decode(stream).should.equal('🍻');
+      return stream.pos.should.equal(5);
+    });
+
+    return it('should decode remainder of buffer when null-byte missing', function() {
+      const stream = new DecodeStream(Buffer.from('🍻'));
+      const string = new StringT(null, 'utf8');
+      return string.decode(stream).should.equal('🍻');
+    });
+  });
+
+  describe('size', function() {
+    it('should use string length', function() {
+      const string = new StringT(7);
+      return string.size('testing').should.equal(7);
+    });
+
+    it('should use correct encoding', function() {
+      const string = new StringT(10, 'utf8');
+      return string.size('🍻').should.equal(4);
+    });
+
+    it('should use encoding from function', function() {
+      const string = new StringT(10, function() { return 'utf8'; });
+      return string.size('🍻').should.equal(4);
+    });
+
+    it('should add size of length field before string', function() {
+      const string = new StringT(uint8, 'utf8');
+      return string.size('🍻').should.equal(5);
+    });
+
+    it('should work with utf16be encoding', function() {
+      const string = new StringT(10, 'utf16be');
+      return string.size('🍻').should.equal(4);
+    });
+
+    it('should take null-byte into account', function() {
+      const string = new StringT(null, 'utf8');
+      return string.size('🍻').should.equal(5);
+    });
+
+    return it('should use defined length if no value given', function() {
+      const array = new StringT(10);
+      return array.size().should.equal(10);
+    });
+  });
+
+  return describe('encode', function() {
+    it('should encode using string length', function(done) {
+      const stream = new EncodeStream;
+      stream.pipe(concat(function(buf) {
+        buf.should.deep.equal(Buffer.from('testing'));
+        return done();
+      })
+      );
+
+      const string = new StringT(7);
+      string.encode(stream, 'testing');
+      return stream.end();
+    });
+
+    it('should encode length as number before string', function(done) {
+      const stream = new EncodeStream;
+      stream.pipe(concat(function(buf) {
+        buf.should.deep.equal(Buffer.from('\x07testing'));
+        return done();
+      })
+      );
+
+      const string = new StringT(uint8);
+      string.encode(stream, 'testing');
+      return stream.end();
+    });
+
+    it('should encode length as number before string utf8', function(done) {
+      const stream = new EncodeStream;
+      stream.pipe(concat(function(buf) {
+        buf.should.deep.equal(Buffer.from('\x0ctesting 😜', 'utf8'));
+        return done();
+      })
+      );
+
+      const string = new StringT(uint8, 'utf8');
+      string.encode(stream, 'testing 😜');
+      return stream.end();
+    });
+
+    it('should encode utf8', function(done) {
+      const stream = new EncodeStream;
+      stream.pipe(concat(function(buf) {
+        buf.should.deep.equal(Buffer.from('🍻'));
+        return done();
+      })
+      );
+
+      const string = new StringT(4, 'utf8');
+      string.encode(stream, '🍻');
+      return stream.end();
+    });
+
+    it('should encode encoding computed from function', function(done) {
+      const stream = new EncodeStream;
+      stream.pipe(concat(function(buf) {
+        buf.should.deep.equal(Buffer.from('🍻'));
+        return done();
+      })
+      );
+
+      const string = new StringT(4, function() { return 'utf8'; });
+      string.encode(stream, '🍻');
+      return stream.end();
+    });
+
+    return it('should encode null-terminated string', function(done) {
+      const stream = new EncodeStream;
+      stream.pipe(concat(function(buf) {
+        buf.should.deep.equal(Buffer.from('🍻\x00'));
+        return done();
+      })
+      );
+
+      const string = new StringT(null, 'utf8');
+      string.encode(stream, '🍻');
+      return stream.end();
+    });
+  });
+});