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var filemeta = require('../server/filemeta');
chai = require('chai'),
assert = chai.assert;
describe('meta string parser', function() {
it('should parse a simple file with META.', function() {
assert.deepEqual(
filemeta.parseMetaString(new Buffer('file\ntext\n' +
'###@META\n { "a": "b##\\u0023" } \nMETA@###\n')),
{
data: "file\ntext\n",
meta: { "a": "b###" }
}
);
});
it('should print a simple file with meta.', function() {
assert.equal(
filemeta.printMetaString("abc\ndef", { "something": "####data####"}),
'abc\ndef###@META\n{"something":"##\\u0023#data##\\u0023#"}\nMETA@###');
});
it('should parse a simple javascript file with META.', function() {
assert.deepEqual(
filemeta.parseMetaString(new Buffer('/* this is a test file */\n' +
'/**@META\n { "a": "b/**\\/" } \nMETA@**/\n\n\n')),
{
data: "/* this is a test file */\n",
meta: { "a": "b/**/" }
}
);
});
it('should print a simple javascript file.', function() {
assert.equal(
filemeta.printMetaString("hello();", {
"type": "text/javascript", "something": "/*data*/" }),
'hello();/**@META\n{"type":"text/javascript",' +
'"something":"/*data*\\/"}\nMETA@**/');
});
var randstring = ['type', '0', '*', '/', '###@META\n', '\nMETA@###', ' '];
function randValue() {
var r = Math.random();
if (r < 0.1) return Math.tan(r * Math.PI / 0.2);
if (r < 0.2) return false;
if (r < 0.3) return true;
if (r < 0.4) return null;
return randString();
}
function randString() {
var s = '';
var n = Math.floor(Math.random() * Math.random() * 20);
while (n-- > 0) {
s += randstring[Math.floor(Math.random() * randstring.length)];
}
return s;
}
function randJson(depth) {
if (!Math.floor(Math.random() * depth)) {
return randValue();
}
var count = Math.ceil(Math.random() * 3), result, key;
if (Math.random() > 0.5) {
result = [];
while (count-- > 0) {
result.push(randJson(depth - 1));
}
} else {
result = {};
while (count-- > 0) {
result[randString()] = randJson(depth - 1);
}
}
return result;
}
function randData() {
var x = randJson(6);
if (x && typeof x == 'object' && !(x instanceof Array)
&& Math.random() < .5) {
x.type = 'javascript';
}
return x;
}
it('should round-trip one troublesone file.', function() {
var v = {
data: "0type \nMETA@###\nMETA@######@META\n###@META\n\n" +
"META@### ###@META\n 0type/0type###@META\nnull\nMETA@###",
meta: null
};
var s = filemeta.printMetaString(v.data, v.meta);
var r = filemeta.parseMetaString(s);
assert.deepEqual(v, r);
});
it('should round-trip 100 random files.', function() {
for (var j = 0; j < 100; ++j) {
var v = { data: randString(), meta: randData() };
var s = filemeta.printMetaString(v.data, v.meta);
var r = filemeta.parseMetaString(s);
assert.deepEqual(v, r);
}
});
});