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var clean = require('gulp-clean');
var fs = require('fs');
var gulp = require('gulp');
var log = require('gulp-util').log;
var gzip = require('../');
var nid = require('nid');
var rename = require('gulp-rename');
var should = require('should');
var Stream = require('stream');
var tap = require('gulp-tap');
var zlib = require('zlib');
// monkeys are fixing cwd for gulp-mocha
// node lives in one process/scope/directory
process.chdir('./test');
describe('gulp-gzip', function() {
describe('config', function() {
it('should have default config', function(done) {
var instance = gzip();
instance.config.should.eql({
append: true,
gzipOptions: {},
skipGrowingFiles: false,
threshold: false
});
done();
});
it('should merge options with defaults', function(done) {
var instance = gzip({ append: false });
instance.config.should.eql({
append: false,
gzipOptions: {},
skipGrowingFiles: false,
threshold: false
});
done();
});
});
describe('file extension', function() {
it('should append .gz to the file extension, by default', function(done) {
gulp.src('files/small.txt')
.pipe(gzip())
.pipe(tap(function(file) {
file.path.should.endWith('.gz');
done();
}));
});
it('should not append .gz to the file extension receiving { append: false }', function(done) {
gulp.src('files/small.txt')
.pipe(gzip({ append: false }))
.pipe(tap(function(file) {
file.path.should.not.endWith('.gz');
done();
}));
});
it('should accept an arbitrary extension with the `extension` option', function(done) {
gulp.src('files/small.txt')
.pipe(gzip({ extension: 'zip' }))
.pipe(tap(function(file) {
file.path.should.endWith('.zip');
done();
}));
});
it('should accept an arbitrary pre-extension with the `preExtension` option', function(done) {
gulp.src('files/small.txt')
.pipe(gzip({ preExtension: 'gz' }))
.pipe(tap(function(file) {
file.path.should.endWith('.gz.txt');
done();
}));
});
});
describe('file type', function() {
it('should return file contents as a Buffer', function(done) {
gulp.src('files/small.txt')
.pipe(gzip())
.pipe(tap(function(file) {
file.contents.should.be.instanceof(Buffer);
done();
}));
});
it('should return file contents as a Stream', function(done) {
gulp.src('files/small.txt', { buffer: false })
.pipe(gzip())
.pipe(tap(function(file) {
file.contents.should.be.instanceof(Stream);
done();
}));
});
});
describe('file properties', function() {
it('should not lose any properties from the Vinyl file', function(done) {
gulp.src('files/small.txt')
.pipe(tap(function(file) {
file.test = 'test';
}))
.pipe(gzip())
.pipe(tap(function(file) {
file.should.have.property('test', 'test');
done();
}));
});
it('should set `contentEncoding`', function(done) {
gulp.src('files/small.txt')
.pipe(gzip())
.pipe(tap(function(file) {
file.should.have.property('contentEncoding');
file.contentEncoding.should.containEql('gzip');
done();
}));
});
});
describe('gzip options', function() {
it('should set gzipOptions object', function(done) {
var instance = gzip({ gzipOptions: { level: 9, memLevel: 1} });
instance.config.should.have.property('gzipOptions');
instance.config.gzipOptions.should.have.property('level', 9);
instance.config.gzipOptions.should.have.property('memLevel', 1);
done();
});
it('should handle compression level in buffer mode', function(done) {
var id_lowest_compression = nid();
var id_highest_compression = nid();
var out_lowest_compression = gulp.dest('tmp');
var out_highest_compression = gulp.dest('tmp');
var size_lowest_compression = 0;
var size_highest_compression = 0;
out_lowest_compression.on('end', function() {
fs.stat('./tmp/' + id_lowest_compression + '.txt.gz', function (err, stats) {
size_lowest_compression = stats.size;
if (size_highest_compression > 0) {
size_highest_compression.should.be.lessThan(size_lowest_compression);
done();
}
});
});
out_highest_compression.on('end', function() {
fs.stat('./tmp/' + id_highest_compression + '.txt.gz', function (err, stats) {
size_highest_compression = stats.size;
if (size_lowest_compression > 0) {
size_highest_compression.should.be.lessThan(size_lowest_compression);
done();
}
});
});
gulp.src('files/big.txt')
.pipe(rename({ basename: id_lowest_compression }))
.pipe(gzip({ gzipOptions: { level: 1 } }))
.pipe(out_lowest_compression);
gulp.src('files/big.txt')
.pipe(rename({ basename: id_highest_compression }))
.pipe(gzip({ gzipOptions: { level: 9 } }))
.pipe(out_highest_compression);
});
it('should handle compression level in stream mode', function(done) {
var id_lowest_compression = nid();
var id_highest_compression = nid();
var out_lowest_compression = gulp.dest('tmp');
var out_highest_compression = gulp.dest('tmp');
var size_lowest_compression = 0;
var size_highest_compression = 0;
out_lowest_compression.on('end', function() {
fs.stat('./tmp/' + id_lowest_compression + '.txt.gz', function (err, stats) {
size_lowest_compression = stats.size;
if (size_highest_compression > 0) {
size_highest_compression.should.be.lessThan(size_lowest_compression);
done();
}
});
});
out_highest_compression.on('end', function() {
fs.stat('./tmp/' + id_highest_compression + '.txt.gz', function (err, stats) {
size_highest_compression = stats.size;
if (size_lowest_compression > 0) {
size_highest_compression.should.be.lessThan(size_lowest_compression);
done();
}
});
});
gulp.src('files/big.txt', { buffer: false })
.pipe(rename({ basename: id_lowest_compression }))
.pipe(gzip({ gzipOptions: { level: 1 } }))
.pipe(out_lowest_compression);
gulp.src('files/big.txt', { buffer: false })
.pipe(rename({ basename: id_highest_compression }))
.pipe(gzip({ gzipOptions: { level: 9 } }))
.pipe(out_highest_compression);
});
});
describe('threshold option', function() {
it('should set threshold to false while receiving false', function(done) {
var instance = gzip({ threshold: false });
instance.config.threshold.should.be.false;
done();
});
it('should set threshold to 150 while receiving true', function(done) {
var instance = gzip({ threshold: true });
instance.config.threshold.should.eql(150);
done();
});
it('should set threshold to Number while receiving Number', function(done) {
var instance = gzip({ threshold: 1024 });
instance.config.should.have.property('threshold', 1024);
done();
});
it('should set threshold to 150 while receiving Number < 150', function(done) {
var instance = gzip({ threshold: 100 });
instance.config.should.have.property('threshold', 150);
done();
});
it('should set threshold to Number while receiving String (bytes result)', function(done) {
var instance = gzip({ threshold: '1kb' });
instance.config.should.have.property('threshold', 1024);
done();
});
it('should set threshold to 150 while receiving String (bytes result < 150)', function(done) {
var instance = gzip({ threshold: '1kb' });
instance.config.should.have.property('threshold', 1024);
done();
});
it('should handle threshold of 1kb by passing through small.txt (<1kb)', function(done) {
var id = nid();
var out = gulp.dest('tmp');
out.on('end', function() {
fs.readFile('./tmp/' + id + '.txt', { encoding: 'utf-8' }, function(err, file) {
fs.readFile('./files/small.txt', { encoding: 'utf-8' }, function(err, original) {
file.should.equal(original);
done();
});
});
});
gulp.src('files/small.txt')
.pipe(rename({ basename: id }))
.pipe(gzip({ threshold: '1kb' }))
.pipe(out);
});
it('should handle threshold of 1kb by compressing big.txt (>1kb)', function(done) {
var id = nid();
var out = gulp.dest('tmp');
out.on('end', function() {
fs.readFile('./tmp/' + id + '.txt.gz', function(err, file) {
zlib.unzip(file, function(err, buffer) {
file = buffer.toString('utf-8');
fs.readFile('./files/big.txt', { encoding: 'utf-8' }, function(err, original) {
file.should.equal(original);
done();
});
});
});
});
gulp.src('files/big.txt')
.pipe(rename({ basename: id }))
.pipe(gzip({ threshold: '1kb' }))
.pipe(out);
});
it('should handle threshold of 1kb by passing through small.txt (<1kb)', function(done) {
var id = nid();
var out = gulp.dest('tmp');
out.on('end', function() {
fs.readFile('./tmp/' + id + '.txt', { encoding: 'utf-8' }, function(err, file) {
fs.readFile('./files/small.txt', { encoding: 'utf-8' }, function(err, original) {
file.should.equal(original);
done();
});
});
});
gulp.src('files/small.txt', { buffer: false })
.pipe(rename({ basename: id }))
.pipe(gzip({ threshold: '1kb' }))
.pipe(out);
});
it('should handle threshold of 1kb by compressing big.txt (>1kb)', function(done) {
var id = nid();
var out = gulp.dest('tmp');
out.on('end', function() {
fs.readFile('./tmp/' + id + '.txt.gz', function(err, file) {
zlib.unzip(file, function(err, buffer) {
file = buffer.toString('utf-8');
fs.readFile('./files/big.txt', { encoding: 'utf-8' }, function(err, original) {
file.should.equal(original);
done();
});
});
});
});
gulp.src('files/big.txt', { buffer: false })
.pipe(rename({ basename: id }))
.pipe(gzip({ threshold: '1kb' }))
.pipe(out);
});
});
describe('delete mode', function() {
it('should not delete existing gzipped files when { deleteMode : false }', function(done) {
var id = nid();
var out = gulp.dest('tmp');
out.on('end', function() {
fs.readFile('./tmp/' + id + '.txt.gz', function(err, file) {
should.not.exist(err);
should.exist(file);
file.should.not.be.empty;
var out = gulp.dest('tmp');
out.on('end', function() {
fs.readFile('./tmp/' + id + '.txt.gz', function(err, file) {
should.not.exist(err);
should.exist(file);
file.should.not.be.empty;
done();
});
});
gulp.src('files/small.txt')
.pipe(rename({ basename: id }))
.pipe(gzip({ threshold: 1024 }))
.pipe(out);
});
});
gulp.src('files/big.txt')
.pipe(rename({ basename: id }))
.pipe(gzip({ threshold: 1024 }))
.pipe(out);
});
it('should delete existing gzipped files if the files changed from big.txt (over threshold) to small.txt (under threshold) when { deleteMode : true }', function(done) {
var id = nid();
var out = gulp.dest('tmp');
out.on('end', function() {
fs.readFile('./tmp/' + id + '.txt.gz', function(err, file) {
should.not.exist(err);
should.exist(file);
file.should.not.be.empty;
var out = gulp.dest('tmp');
out.on('end', function() {
fs.exists('./tmp/' + id + '.txt.gz', function(exists) {
exists.should.be.false;
done();
});
});
gulp.src('files/small.txt')
.pipe(rename({ basename: id }))
.pipe(gzip({ threshold: 1024, deleteMode: 'tmp' }))
.pipe(out);
});
});
gulp.src('files/big.txt')
.pipe(rename({ basename: id }))
.pipe(gzip({ threshold: 1024, deleteMode: 'tmp' }))
.pipe(out);
});
});
describe ('uncompress the compressed file', function() {
it('should match original in buffer mode', function(done) {
var id = nid();
var out = gulp.dest('tmp');
out.on('end', function() {
fs.readFile('./tmp/' + id + '.txt.gz', function(err, file) {
zlib.unzip(file, function(err, buffer) {
file = buffer.toString('utf-8', 0, buffer.length);
fs.readFile('./files/small.txt', { encoding: 'utf-8' }, function(err, original) {
file.should.equal(original);
done();
});
});
});
});
gulp.src('files/small.txt')
.pipe(rename({ basename: id }))
.pipe(gzip())
.pipe(out);
});
it('should match original in stream mode', function(done) {
var id = nid();
var out = gulp.dest('tmp');
out.on('end', function() {
fs.readFile('./tmp/' + id + '.txt.gz', function(err, file) {
zlib.unzip(file, function(err, buffer) {
file = buffer.toString('utf-8', 0, buffer.length);
fs.readFile('./files/small.txt', { encoding: 'utf-8' }, function(err, original) {
file.should.equal(original);
done();
});
});
});
});
gulp.src('files/small.txt', { buffer: false })
.pipe(rename({ basename: id }))
.pipe(gzip())
.pipe(out);
});
});
describe('skip files that get larger after compression', function() {
it('handles buffers', function(done) {
var originalBuffer;
gulp.src('files/too_small.txt')
.pipe(tap(function(file) {
originalBuffer = file.contents;
}))
.pipe(gzip({ skipGrowingFiles: true }))
.pipe(tap(function(file) {
file.contents.should.equal(originalBuffer);
done();
}));
});
it('handles streams', function(done) {
var originalStream;
gulp.src('files/too_small.txt', { buffer: false })
.pipe(tap(function(file) {
originalStream = file.contents;
}))
.pipe(gzip({ skipGrowingFiles: true }))
.pipe(tap(function(file) {
file.contents.should.equal(originalStream);
done();
}));
});
});
});
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