keys.js
2.57 KB
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var test = require('tape');
var fs = require ('fs');
var join = require('path').join;
var couch_sample_file = join(__dirname, 'fixtures','couch_sample.json');
var JSONStream = require('../');
var fixture = {
obj: {
one: 1,
two: 2,
three: 3
}
};
function assertFixtureKeys(stream, t) {
var keys = [];
var values = [];
stream.on('data', function(data) {
keys.push(data.key);
values.push(data.value);
});
stream.on('end', function() {
t.deepEqual(keys, ['one', 'two', 'three']);
t.deepEqual(values, [1,2,3]);
t.end();
});
stream.write(JSON.stringify(fixture));
stream.end();
}
test('keys via string', function(t) {
var stream = JSONStream.parse('obj.$*');
assertFixtureKeys(stream, t);
});
test('keys via array', function(t) {
var stream = JSONStream.parse(['obj',{emitKey: true}]);
assertFixtureKeys(stream, t);
});
test('path via array', function(t) {
var stream = JSONStream.parse(['obj',{emitPath: true}]);
var paths = [];
var values = [];
stream.on('data', function(data) {
console.log(JSON.stringify(data));
paths.push(data.path);
values.push(data.value);
});
stream.on('end', function() {
t.deepEqual(paths, [['obj', 'one'], ['obj', 'two'], ['obj', 'three']]);
t.deepEqual(values, [1,2,3]);
t.end();
});
stream.write(JSON.stringify(fixture));
stream.end();
});
test('advanced keys', function(t) {
var advanced = fs.readFileSync(couch_sample_file);
var stream = JSONStream.parse(['rows', true, 'doc', {emitKey: true}]);
var keys = [];
var values = [];
stream.on('data', function(data) {
keys.push(data.key);
values.push(data.value);
});
stream.on('end', function() {
t.deepEqual(keys, [
'_id', '_rev', 'hello',
'_id', '_rev', 'hello'
]);
t.deepEqual(values, [
"change1_0.6995461115147918", "1-e240bae28c7bb3667f02760f6398d508", 1,
"change2_0.6995461115147918", "1-13677d36b98c0c075145bb8975105153", 2
]);
t.end();
});
stream.write(advanced);
stream.end();
});
test('parent keys', function(t) {
var stream = JSONStream.parse('$*');
var d = null;
stream.on('data', function(data) {
if(d) t.fail('should only be called once');
d = data;
});
stream.on('end', function() {
t.deepEqual(d,{
key: 'obj',
value: fixture.obj
});
t.end();
});
stream.write(JSON.stringify(fixture));
stream.end();
})