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'use strict';
var jsonTransform = require('../');
var Promise = require('promise');
var should = require('should');
require('mocha');
var gutil = require('gulp-util');
var fs = require('fs');
var path = require('path');
var jshint = require('jshint');
describe('gulp-json-transform', function () {
var testTransform = function (inputFile, transformFn, expected) {
var inputJson = new gutil.File({
path: 'test/fixtures/' + inputFile,
cwd: 'test/',
base: 'test/fixtures',
contents: fs.readFileSync('test/fixtures/' + inputFile)
});
return function (done) {
var stream = jsonTransform(transformFn);
stream.on('error', function(err) {
should.exist(err);
done(err);
});
stream.on('data', function (newFile) {
should.exist(newFile);
should.exist(newFile.contents);
var newFilePath = path.resolve(newFile.path);
var expectedFilePath = path.resolve('test/fixtures/' + inputFile);
newFilePath.should.equal(expectedFilePath);
newFile.relative.should.equal(inputFile);
String(newFile.contents).should.equal(expected);
Buffer.isBuffer(newFile.contents).should.equal(true);
done();
});
stream.write(inputJson);
stream.end();
};
};
it('should transform a json file to a json file', testTransform('input.json', function(data) {
return {foobar: data.foo + data.bar};
}, '{"foobar":"[foo][bar]"}'));
it('should transform a json file to a text file', testTransform('input.json', function(data) {
return data.foo + data.bar;
}, '[foo][bar]'));
it('should accept the file as a parameter to the transform function', testTransform('input.json', function(data, file) {
var fileProps = ['path', 'relative', 'base'];
for (var fileProp in file) {
if (file.hasOwnProperty(fileProp)) {
var index = fileProps.indexOf(fileProp);
should.ok(index >= 0, 'file object has illegal property: ' + fileProp);
if (index >= 0) {
fileProps.splice(index, 1);
}
}
}
should.ok(fileProps.length === 0, 'file object is missing properties: ' + JSON.stringify(fileProps));
return file.relative + ' - ' + data.foo + data.bar;
}, 'input.json - [foo][bar]'));
it('should accept promises', testTransform('input.json', function(data) {
return Promise.resolve(data.foo + data.bar);
}, '[foo][bar]'));
});
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