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322 lines (286 loc) · 9.44 KB
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'use strict';
var util = require('../lib/util');
var assert = require('assert');
var getPromise = require('./testutil').getPromise;
var pointer = require('json-pointer');
describe('util', function() {
describe('objectToPromise', function() {
var objectToPromise = util.objectToPromise;
it('should return promise if there are no promises', function() {
var obj = { a: 1, b: 2 };
var result = objectToPromise(obj);
return result.then(function (res) {
assert.deepEqual(res, obj);
});
});
it('should return promise resolving to object without promises (if object has one promise)', function() {
var obj = {
a: 1,
b: Promise.resolve(2),
c: 3
};
var result = objectToPromise(obj);
return result.then(function (res) {
assert.deepEqual(res, { a: 1, b: 2, c: 3 });
});
});
it('should return promise resolving to object without promises (if object has many promises)', function() {
var obj = {
a: 1,
b: Promise.resolve(2),
c: Promise.resolve(3)
};
var result = objectToPromise(obj);
return result.then(function (res) {
assert.deepEqual(res, { a: 1, b: 2, c: 3 });
});
});
});
describe('promiseMapSerial', function() {
var promiseMapSerial = util.promiseMapSerial;
var callsResolutions;
beforeEach(function() {
callsResolutions = getPromise.callsResolutions = [];
});
describe('map function is synchronous', function() {
function syncMapper(data) {
callsResolutions.push({ call: data });
return data * 10;
}
it('should map array without promises synchronously', function() {
var arr = [1, 2, 3];
return promiseMapSerial(arr, syncMapper)
.then(function (result) {
assert.deepEqual(result, [10, 20, 30]);
assert.deepEqual(callsResolutions, [{ call: 1 }, { call: 2 }, { call: 3 }]);
});
});
it('should return promise resolving to array without promises (if array has one promise)', function() {
var arr = [
1,
getPromise(2),
3
];
var result = promiseMapSerial(arr, syncMapper);
return result.then(function (res) {
assert.deepEqual(res, [10, 20, 30]);
assert.deepEqual(callsResolutions, [
{ call: 1 },
{ res: 2 },
{ call: 2 },
{ call: 3 }
]);
});
});
it('should return promise resolving to array without promises (if array has many promises resolving in oorder)', function() {
var arr = [
1,
getPromise(2, 20),
getPromise(3, 40)
];
var result = promiseMapSerial(arr, syncMapper);
return result.then(function (res) {
assert.deepEqual(res, [10, 20, 30]);
assert.deepEqual(callsResolutions, [
{ call: 1 },
{ res: 2 },
{ call: 2},
{ res: 3 },
{ call: 3 }
]);
});
});
it('should return promise resolving to array without promises (if array has many promises NOT resolving in order)', function() {
var arr = [
1,
getPromise(2, 40),
getPromise(3, 20)
];
var result = promiseMapSerial(arr, syncMapper);
return result.then(function (res) {
assert.deepEqual(res, [10, 20, 30]);
assert.deepEqual(callsResolutions, [
{ call: 1 },
{ res: 3 },
{ res: 2 },
{ call: 2},
{ call: 3 }
]);
});
});
it('should return promise resolving to array without promises (if array has many promises NOT resolving in order)', function() {
var arr = [
getPromise(1),
getPromise(2),
getPromise(3)
];
var result = promiseMapSerial(arr, syncMapper);
return result.then(function (res) {
assert.deepEqual(res, [10, 20, 30]);
// assert.deepEqual(callsResolutions, [
// { call: 1 },
// { res: 3 },
// { res: 2 },
// { call: 2},
// { call: 3 }
// ]);
});
});
});
describe('map function returns promise', function() {
function asyncMapper(data) {
callsResolutions.push({ call: data });
return getPromise(data * 10);
}
it('should map array without promises sequentially (waiting for previous result)', function() {
var arr = [1, 2, 3];
var result = promiseMapSerial(arr, asyncMapper);
return result.then(function (res) {
assert.deepEqual(res, [10, 20, 30]);
assert.deepEqual(callsResolutions, [
{ call: 1 },
{ res: 10 },
{ call: 2 },
{ res: 20 },
{ call: 3 },
{ res: 30 }
]);
});
});
it('should return promise resolving to array without promises (if array has one promise)', function() {
var arr = [
1,
getPromise(2),
3
];
var result = promiseMapSerial(arr, asyncMapper);
return result.then(function (res) {
assert.deepEqual(res, [10, 20, 30]);
assert.deepEqual(callsResolutions, [
{ call: 1 },
{ res: 2 },
{ res: 10 },
{ call: 2 },
{ res: 20 },
{ call: 3 },
{ res: 30 }
]);
});
});
it('should return promise resolving to array without promises (if array has one promise)', function() {
var arr = [
1,
getPromise(2, 10),
getPromise(3, 20)
];
var result = promiseMapSerial(arr, asyncMapper);
return result.then(function (res) {
assert.deepEqual(res, [10, 20, 30]);
assert.deepEqual(callsResolutions, [
{ call: 1 },
{ res: 10 },
{ res: 2 },
{ call: 2 },
{ res: 20 },
{ res: 3 },
{ call: 3 },
{ res: 30 }
]);
});
});
});
describe('map function can return promise or value', function() {
function mapper(data) {
callsResolutions.push({ call: data });
if (data <= 2) return getPromise(data * 10, 20);
if (data <= 4) return data * 10;
if (data % 2) return getPromise(data * 10, 10);
return data * 10;
}
it('should call mapper in order regardless of what it returns when array has no promises', function() {
var arr = [ 1, 2, 3, 4, 5, 6, 7 ];
var result = promiseMapSerial(arr, mapper);
return result.then(function (res) {
assert.deepEqual(res, [10, 20, 30, 40, 50, 60, 70]);
assert.deepEqual(callsResolutions, [
{ call: 1 },
{ res: 10 },
{ call: 2 },
{ res: 20 },
{ call: 3 },
{ call: 4 },
{ call: 5 },
{ res: 50 },
{ call: 6 },
{ call: 7 },
{ res: 70 }
]);
});
});
it('should call mapper in order when array has promises', function() {
var arr = [
1,
getPromise(2, 30),
3,
getPromise(4, 50),
5,
getPromise(6, 70),
getPromise(7, 90)
];
var result = promiseMapSerial(arr, mapper);
return result.then(function (res) {
assert.deepEqual(res, [10, 20, 30, 40, 50, 60, 70]);
assert.deepEqual(callsResolutions, [
{ call: 1 },
{ res: 10 },
{ res: 2 },
{ call: 2 },
{ res: 4 },
{ res: 20 },
{ call: 3 },
{ call: 4 },
{ call: 5 },
{ res: 50 },
{ res: 6 },
{ call: 6 },
{ res: 7 },
{ call: 7 },
{ res: 70 }
]);
});
});
});
});
describe('toAbsolutePointer', function() {
var base = pointer.parse('/foo/bar');
it('should return property/index for N# pointer', function() {
var absPntr = util.toAbsolutePointer('0#', base);
assert.equal(absPntr, 'bar');
var absPntr = util.toAbsolutePointer('1#', base);
assert.equal(absPntr, 'foo');
});
it('should throw if N# points outside of the object', function() {
assert.throws(function() {
util.toAbsolutePointer('2#', base);
}, /Cannot access property\/index 2 levels up, current level is 2/);
assert.throws(function() {
util.toAbsolutePointer('3#', base);
}, /Cannot access property\/index 3 levels up, current level is 2/);
});
it('should return absolute parsed pointer', function() {
var absPntr = util.toAbsolutePointer('1/baz', base);
assert.deepEqual(absPntr, ['foo','baz']);
var absPntr = util.toAbsolutePointer('1/baz/~0abc/~1def', base);
assert.deepEqual(absPntr, ['foo','baz', '~abc', '/def']);
var absPntr = util.toAbsolutePointer('2/baz/quux', base);
assert.deepEqual(absPntr, ['baz', 'quux']);
var absPntr = util.toAbsolutePointer('0/baz', base);
assert.deepEqual(absPntr, ['foo', 'bar', 'baz']);
});
it('should trhow if N/... points outside of object', function() {
assert.throws(function() {
util.toAbsolutePointer('3/baz', base);
}, /Cannot reference script 3 levels up, current level is 2/);
});
});
});
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