72 lines
2.0 KiB
JavaScript
72 lines
2.0 KiB
JavaScript
var util = require('../lib/test-utils.js');
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var expect = require('chai').expect;
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describe('fs.write', function() {
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beforeEach(util.setup);
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afterEach(util.cleanup);
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it('should be a function', function() {
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var fs = util.fs();
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expect(fs.write).to.be.a('function');
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});
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it('should error if file path is undefined',function(done) {
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var fs = util.fs();
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fs.writeFile(undefined, 'data', function(error) {
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expect(error).to.exist;
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expect(error.code).to.equal('EINVAL');
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done();
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});
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});
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it('should write data to a file', function(done) {
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var fs = util.fs();
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var buffer = Buffer.from([1, 2, 3, 4, 5, 6, 7, 8]);
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fs.open('/myfile', 'w', function(error, fd) {
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if(error) throw error;
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fs.write(fd, buffer, 0, buffer.length, 0, function(error, result) {
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expect(error).not.to.exist;
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expect(result).to.equal(buffer.length);
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fs.stat('/myfile', function(error, result) {
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expect(error).not.to.exist;
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expect(result.isFile()).to.be.true;
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expect(result.size).to.equal(buffer.length);
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fs.close(fd, done);
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});
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});
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});
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});
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it('should update the current file position', function(done) {
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var fs = util.fs();
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var buffer = Buffer.from([1, 2, 3, 4, 5, 6, 7, 8]);
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var _result = 0;
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fs.open('/myfile', 'w', function(error, fd) {
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if(error) throw error;
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fs.write(fd, buffer, 0, buffer.length, undefined, function(error, result) {
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if(error) throw error;
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_result += result;
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fs.write(fd, buffer, 0, buffer.length, undefined, function(error, result) {
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if(error) throw error;
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_result += result;
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fs.stat('/myfile', function(error, result) {
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if(error) throw error;
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expect(error).not.to.exist;
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expect(_result).to.equal(2 * buffer.length);
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expect(result.size).to.equal(_result);
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fs.close(fd, done);
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});
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});
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});
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});
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});
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});
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