tra-analysis/website/functions/node_modules/traverse/test/mutability.js
2019-01-06 13:14:45 -06:00

301 lines
7.0 KiB
JavaScript

var test = require('tape');
var traverse = require('../');
var deepEqual = require('./lib/deep_equal');
test('mutate', function (t) {
var obj = { a : 1, b : 2, c : [ 3, 4 ] };
var res = traverse(obj).forEach(function (x) {
if (typeof x === 'number' && x % 2 === 0) {
this.update(x * 10);
}
});
t.same(obj, res);
t.same(obj, { a : 1, b : 20, c : [ 3, 40 ] });
t.end();
});
test('mutateT', function (t) {
var obj = { a : 1, b : 2, c : [ 3, 4 ] };
var res = traverse.forEach(obj, function (x) {
if (typeof x === 'number' && x % 2 === 0) {
this.update(x * 10);
}
});
t.same(obj, res);
t.same(obj, { a : 1, b : 20, c : [ 3, 40 ] });
t.end();
});
test('map', function (t) {
var obj = { a : 1, b : 2, c : [ 3, 4 ] };
var res = traverse(obj).map(function (x) {
if (typeof x === 'number' && x % 2 === 0) {
this.update(x * 10);
}
});
t.same(obj, { a : 1, b : 2, c : [ 3, 4 ] });
t.same(res, { a : 1, b : 20, c : [ 3, 40 ] });
t.end();
});
test('mapT', function (t) {
var obj = { a : 1, b : 2, c : [ 3, 4 ] };
var res = traverse.map(obj, function (x) {
if (typeof x === 'number' && x % 2 === 0) {
this.update(x * 10);
}
});
t.same(obj, { a : 1, b : 2, c : [ 3, 4 ] });
t.same(res, { a : 1, b : 20, c : [ 3, 40 ] });
t.end();
});
test('clone', function (t) {
var obj = { a : 1, b : 2, c : [ 3, 4 ] };
var res = traverse(obj).clone();
t.same(obj, res);
t.ok(obj !== res);
obj.a ++;
t.same(res.a, 1);
obj.c.push(5);
t.same(res.c, [ 3, 4 ]);
t.end();
});
test('cloneT', function (t) {
var obj = { a : 1, b : 2, c : [ 3, 4 ] };
var res = traverse.clone(obj);
t.same(obj, res);
t.ok(obj !== res);
obj.a ++;
t.same(res.a, 1);
obj.c.push(5);
t.same(res.c, [ 3, 4 ]);
t.end();
});
test('reduce', function (t) {
var obj = { a : 1, b : 2, c : [ 3, 4 ] };
var res = traverse(obj).reduce(function (acc, x) {
if (this.isLeaf) acc.push(x);
return acc;
}, []);
t.same(obj, { a : 1, b : 2, c : [ 3, 4 ] });
t.same(res, [ 1, 2, 3, 4 ]);
t.end();
});
test('reduceInit', function (t) {
var obj = { a : 1, b : 2, c : [ 3, 4 ] };
var res = traverse(obj).reduce(function (acc, x) {
if (this.isRoot) assert.fail('got root');
return acc;
});
t.same(obj, { a : 1, b : 2, c : [ 3, 4 ] });
t.same(res, obj);
t.end();
});
test('remove', function (t) {
var obj = { a : 1, b : 2, c : [ 3, 4 ] };
traverse(obj).forEach(function (x) {
if (this.isLeaf && x % 2 == 0) this.remove();
});
t.same(obj, { a : 1, c : [ 3 ] });
t.end();
});
exports.removeNoStop = function() {
var obj = { a : 1, b : 2, c : { d: 3, e: 4 }, f: 5 };
var keys = [];
traverse(obj).forEach(function (x) {
keys.push(this.key)
if (this.key == 'c') this.remove();
});
t.same(keys, [undefined, 'a', 'b', 'c', 'd', 'e', 'f'])
t.end();
}
exports.removeStop = function() {
var obj = { a : 1, b : 2, c : { d: 3, e: 4 }, f: 5 };
var keys = [];
traverse(obj).forEach(function (x) {
keys.push(this.key)
if (this.key == 'c') this.remove(true);
});
t.same(keys, [undefined, 'a', 'b', 'c', 'f'])
t.end();
}
test('removeMap', function (t) {
var obj = { a : 1, b : 2, c : [ 3, 4 ] };
var res = traverse(obj).map(function (x) {
if (this.isLeaf && x % 2 == 0) this.remove();
});
t.same(obj, { a : 1, b : 2, c : [ 3, 4 ] });
t.same(res, { a : 1, c : [ 3 ] });
t.end();
});
test('delete', function (t) {
var obj = { a : 1, b : 2, c : [ 3, 4 ] };
traverse(obj).forEach(function (x) {
if (this.isLeaf && x % 2 == 0) this.delete();
});
t.ok(!deepEqual(
obj, { a : 1, c : [ 3, undefined ] }
));
t.ok(deepEqual(
obj, { a : 1, c : [ 3 ] }
));
t.ok(!deepEqual(
obj, { a : 1, c : [ 3, null ] }
));
t.end();
});
test('deleteNoStop', function (t) {
var obj = { a : 1, b : 2, c : { d: 3, e: 4 } };
var keys = [];
traverse(obj).forEach(function (x) {
keys.push(this.key)
if (this.key == 'c') this.delete();
});
t.same(keys, [undefined, 'a', 'b', 'c', 'd', 'e'])
t.end();
});
test('deleteStop', function (t) {
var obj = { a : 1, b : 2, c : { d: 3, e: 4 } };
var keys = [];
traverse(obj).forEach(function (x) {
keys.push(this.key)
if (this.key == 'c') this.delete(true);
});
t.same(keys, [undefined, 'a', 'b', 'c'])
t.end();
});
test('deleteRedux', function (t) {
var obj = { a : 1, b : 2, c : [ 3, 4, 5 ] };
traverse(obj).forEach(function (x) {
if (this.isLeaf && x % 2 == 0) this.delete();
});
t.ok(!deepEqual(
obj, { a : 1, c : [ 3, undefined, 5 ] }
));
t.ok(deepEqual(
obj, { a : 1, c : [ 3 ,, 5 ] }
));
t.ok(!deepEqual(
obj, { a : 1, c : [ 3, null, 5 ] }
));
t.ok(!deepEqual(
obj, { a : 1, c : [ 3, 5 ] }
));
t.end();
});
test('deleteMap', function (t) {
var obj = { a : 1, b : 2, c : [ 3, 4 ] };
var res = traverse(obj).map(function (x) {
if (this.isLeaf && x % 2 == 0) this.delete();
});
t.ok(deepEqual(
obj,
{ a : 1, b : 2, c : [ 3, 4 ] }
));
var xs = [ 3, 4 ];
delete xs[1];
t.ok(deepEqual(
res, { a : 1, c : xs }
));
t.ok(deepEqual(
res, { a : 1, c : [ 3, ] }
));
t.ok(deepEqual(
res, { a : 1, c : [ 3 ] }
));
t.end();
});
test('deleteMapRedux', function (t) {
var obj = { a : 1, b : 2, c : [ 3, 4, 5 ] };
var res = traverse(obj).map(function (x) {
if (this.isLeaf && x % 2 == 0) this.delete();
});
t.ok(deepEqual(
obj,
{ a : 1, b : 2, c : [ 3, 4, 5 ] }
));
var xs = [ 3, 4, 5 ];
delete xs[1];
t.ok(deepEqual(
res, { a : 1, c : xs }
));
t.ok(!deepEqual(
res, { a : 1, c : [ 3, 5 ] }
));
t.ok(deepEqual(
res, { a : 1, c : [ 3 ,, 5 ] }
));
t.end();
});
test('objectToString', function (t) {
var obj = { a : 1, b : 2, c : [ 3, 4 ] };
var res = traverse(obj).forEach(function (x) {
if (typeof x === 'object' && !this.isRoot) {
this.update(JSON.stringify(x));
}
});
t.same(obj, res);
t.same(obj, { a : 1, b : 2, c : "[3,4]" });
t.end();
});
test('stringToObject', function (t) {
var obj = { a : 1, b : 2, c : "[3,4]" };
var res = traverse(obj).forEach(function (x) {
if (typeof x === 'string') {
this.update(JSON.parse(x));
}
else if (typeof x === 'number' && x % 2 === 0) {
this.update(x * 10);
}
});
t.deepEqual(obj, res);
t.deepEqual(obj, { a : 1, b : 20, c : [ 3, 40 ] });
t.end();
});