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'use strict';
var test = require('tape');
var inspect = require('object-inspect');
var SaferBuffer = require('safer-buffer').Buffer;
var forEach = require('for-each');
var v = require('es-value-fixtures');
var utils = require('../lib/utils');
test('merge()', function (t) {
t.deepEqual(utils.merge(null, true), [null, true], 'merges true into null');
t.deepEqual(utils.merge(null, [42]), [null, 42], 'merges null into an array');
t.deepEqual(utils.merge({ a: 'b' }, { a: 'c' }), { a: ['b', 'c'] }, 'merges two objects with the same key');
var oneMerged = utils.merge({ foo: 'bar' }, { foo: { first: '123' } });
t.deepEqual(oneMerged, { foo: ['bar', { first: '123' }] }, 'merges a standalone and an object into an array');
var twoMerged = utils.merge({ foo: ['bar', { first: '123' }] }, { foo: { second: '456' } });
t.deepEqual(twoMerged, { foo: { 0: 'bar', 1: { first: '123' }, second: '456' } }, 'merges a standalone and two objects into an array');
var sandwiched = utils.merge({ foo: ['bar', { first: '123', second: '456' }] }, { foo: 'baz' });
t.deepEqual(sandwiched, { foo: ['bar', { first: '123', second: '456' }, 'baz'] }, 'merges an object sandwiched by two standalones into an array');
var nestedArrays = utils.merge({ foo: ['baz'] }, { foo: ['bar', 'xyzzy'] });
t.deepEqual(nestedArrays, { foo: ['baz', 'bar', 'xyzzy'] });
var noOptionsNonObjectSource = utils.merge({ foo: 'baz' }, 'bar');
t.deepEqual(noOptionsNonObjectSource, { foo: 'baz', bar: true });
var func = function f() {};
t.deepEqual(
utils.merge(func, { foo: 'bar' }),
[func, { foo: 'bar' }],
'functions can not be merged into'
);
func.bar = 'baz';
t.deepEqual(
utils.merge({ foo: 'bar' }, func),
{ foo: 'bar', bar: 'baz' },
'functions can be merge sources'
);
t.test(
'avoids invoking array setters unnecessarily',
{ skip: typeof Object.defineProperty !== 'function' },
function (st) {
var setCount = 0;
var getCount = 0;
var observed = [];
Object.defineProperty(observed, 0, {
get: function () {
getCount += 1;
return { bar: 'baz' };
},
set: function () { setCount += 1; }
});
utils.merge(observed, [null]);
st.equal(setCount, 0);
st.equal(getCount, 1);
observed[0] = observed[0]; // eslint-disable-line no-self-assign
st.equal(setCount, 1);
st.equal(getCount, 2);
st.end();
}
);
t.test('with overflow objects (from arrayLimit)', function (st) {
st.test('merges primitive into overflow object at next index', function (s2t) {
// Create an overflow object via combine
var overflow = utils.combine(['a'], 'b', 1, false);
s2t.ok(utils.isOverflow(overflow), 'overflow object is marked');
var merged = utils.merge(overflow, 'c');
s2t.deepEqual(merged, { 0: 'a', 1: 'b', 2: 'c' }, 'adds primitive at next numeric index');
s2t.end();
});
st.test('merges primitive into regular object with numeric keys normally', function (s2t) {
var obj = { 0: 'a', 1: 'b' };
s2t.notOk(utils.isOverflow(obj), 'plain object is not marked as overflow');
var merged = utils.merge(obj, 'c');
s2t.deepEqual(merged, { 0: 'a', 1: 'b', c: true }, 'adds primitive as key (not at next index)');
s2t.end();
});
st.test('merges primitive into object with non-numeric keys normally', function (s2t) {
var obj = { foo: 'bar' };
var merged = utils.merge(obj, 'baz');
s2t.deepEqual(merged, { foo: 'bar', baz: true }, 'adds primitive as key with value true');
s2t.end();
});
st.test('merges overflow object into primitive', function (s2t) {
// Create an overflow object via combine
var overflow = utils.combine([], 'b', 0, false);
s2t.ok(utils.isOverflow(overflow), 'overflow object is marked');
var merged = utils.merge('a', overflow);
s2t.ok(utils.isOverflow(merged), 'result is also marked as overflow');
s2t.deepEqual(merged, { 0: 'a', 1: 'b' }, 'creates object with primitive at 0, source values shifted');
s2t.end();
});
st.test('merges overflow object with multiple values into primitive', function (s2t) {
// Create an overflow object via combine
var overflow = utils.combine(['b'], 'c', 1, false);
s2t.ok(utils.isOverflow(overflow), 'overflow object is marked');
var merged = utils.merge('a', overflow);
s2t.deepEqual(merged, { 0: 'a', 1: 'b', 2: 'c' }, 'shifts all source indices by 1');
s2t.end();
});
st.test('merges regular object into primitive as array', function (s2t) {
var obj = { foo: 'bar' };
var merged = utils.merge('a', obj);
s2t.deepEqual(merged, ['a', { foo: 'bar' }], 'creates array with primitive and object');
s2t.end();
});
st.end();
});
t.end();
});
test('assign()', function (t) {
var target = { a: 1, b: 2 };
var source = { b: 3, c: 4 };
var result = utils.assign(target, source);
t.equal(result, target, 'returns the target');
t.deepEqual(target, { a: 1, b: 3, c: 4 }, 'target and source are merged');
t.deepEqual(source, { b: 3, c: 4 }, 'source is untouched');
t.end();
});
test('combine()', function (t) {
t.test('both arrays', function (st) {
var a = [1];
var b = [2];
var combined = utils.combine(a, b);
st.deepEqual(a, [1], 'a is not mutated');
st.deepEqual(b, [2], 'b is not mutated');
st.notEqual(a, combined, 'a !== combined');
st.notEqual(b, combined, 'b !== combined');
st.deepEqual(combined, [1, 2], 'combined is a + b');
st.end();
});
t.test('one array, one non-array', function (st) {
var aN = 1;
var a = [aN];
var bN = 2;
var b = [bN];
var combinedAnB = utils.combine(aN, b);
st.deepEqual(b, [bN], 'b is not mutated');
st.notEqual(aN, combinedAnB, 'aN + b !== aN');
st.notEqual(a, combinedAnB, 'aN + b !== a');
st.notEqual(bN, combinedAnB, 'aN + b !== bN');
st.notEqual(b, combinedAnB, 'aN + b !== b');
st.deepEqual([1, 2], combinedAnB, 'first argument is array-wrapped when not an array');
var combinedABn = utils.combine(a, bN);
st.deepEqual(a, [aN], 'a is not mutated');
st.notEqual(aN, combinedABn, 'a + bN !== aN');
st.notEqual(a, combinedABn, 'a + bN !== a');
st.notEqual(bN, combinedABn, 'a + bN !== bN');
st.notEqual(b, combinedABn, 'a + bN !== b');
st.deepEqual([1, 2], combinedABn, 'second argument is array-wrapped when not an array');
st.end();
});
t.test('neither is an array', function (st) {
var combined = utils.combine(1, 2);
st.notEqual(1, combined, '1 + 2 !== 1');
st.notEqual(2, combined, '1 + 2 !== 2');
st.deepEqual([1, 2], combined, 'both arguments are array-wrapped when not an array');
st.end();
});
t.test('with arrayLimit', function (st) {
st.test('under the limit', function (s2t) {
var combined = utils.combine(['a', 'b'], 'c', 10, false);
s2t.deepEqual(combined, ['a', 'b', 'c'], 'returns array when under limit');
s2t.ok(Array.isArray(combined), 'result is an array');
s2t.end();
});
st.test('exactly at the limit stays as array', function (s2t) {
var combined = utils.combine(['a', 'b'], 'c', 3, false);
s2t.deepEqual(combined, ['a', 'b', 'c'], 'stays as array when exactly at limit');
s2t.ok(Array.isArray(combined), 'result is an array');
s2t.end();
});
st.test('over the limit', function (s2t) {
var combined = utils.combine(['a', 'b', 'c'], 'd', 3, false);
s2t.deepEqual(combined, { 0: 'a', 1: 'b', 2: 'c', 3: 'd' }, 'converts to object when over limit');
s2t.notOk(Array.isArray(combined), 'result is not an array');
s2t.end();
});
st.test('with arrayLimit 0', function (s2t) {
var combined = utils.combine([], 'a', 0, false);
s2t.deepEqual(combined, { 0: 'a' }, 'converts single element to object with arrayLimit 0');
s2t.notOk(Array.isArray(combined), 'result is not an array');
s2t.end();
});
st.test('with plainObjects option', function (s2t) {
var combined = utils.combine(['a'], 'b', 1, true);
var expected = { __proto__: null, 0: 'a', 1: 'b' };
s2t.deepEqual(combined, expected, 'converts to object with null prototype');
s2t.equal(Object.getPrototypeOf(combined), null, 'result has null prototype when plainObjects is true');
s2t.end();
});
st.end();
});
t.test('with existing overflow object', function (st) {
st.test('adds to existing overflow object at next index', function (s2t) {
// Create overflow object first via combine
var overflow = utils.combine(['a'], 'b', 1, false);
s2t.ok(utils.isOverflow(overflow), 'initial object is marked as overflow');
var combined = utils.combine(overflow, 'c', 10, false);
s2t.equal(combined, overflow, 'returns the same object (mutated)');
s2t.deepEqual(combined, { 0: 'a', 1: 'b', 2: 'c' }, 'adds value at next numeric index');
s2t.end();
});
st.test('does not treat plain object with numeric keys as overflow', function (s2t) {
var plainObj = { 0: 'a', 1: 'b' };
s2t.notOk(utils.isOverflow(plainObj), 'plain object is not marked as overflow');
// combine treats this as a regular value, not an overflow object to append to
var combined = utils.combine(plainObj, 'c', 10, false);
s2t.deepEqual(combined, [{ 0: 'a', 1: 'b' }, 'c'], 'concatenates as regular values');
s2t.end();
});
st.end();
});
t.end();
});
test('decode', function (t) {
t.equal(
utils.decode('a+b'),
'a b',
'decodes + to space'
);
t.equal(
utils.decode('name%2Eobj'),
'name.obj',
'decodes a string'
);
t.equal(
utils.decode('name%2Eobj%2Efoo', null, 'iso-8859-1'),
'name.obj.foo',
'decodes a string in iso-8859-1'
);
t.end();
});
test('encode', function (t) {
forEach(v.nullPrimitives, function (nullish) {
t['throws'](
function () { utils.encode(nullish); },
TypeError,
inspect(nullish) + ' is not a string'
);
});
t.equal(utils.encode(''), '', 'empty string returns itself');
t.deepEqual(utils.encode([]), [], 'empty array returns itself');
t.deepEqual(utils.encode({ length: 0 }), { length: 0 }, 'empty arraylike returns itself');
t.test('symbols', { skip: !v.hasSymbols }, function (st) {
st.equal(utils.encode(Symbol('x')), 'Symbol%28x%29', 'symbol is encoded');
st.end();
});
t.equal(
utils.encode('(abc)'),
'%28abc%29',
'encodes parentheses'
);
t.equal(
utils.encode({ toString: function () { return '(abc)'; } }),
'%28abc%29',
'toStrings and encodes parentheses'
);
t.equal(
utils.encode('abc 123 💩', null, 'iso-8859-1'),
'abc%20123%20%26%2355357%3B%26%2356489%3B',
'encodes in iso-8859-1'
);
var longString = '';
var expectedString = '';
for (var i = 0; i < 1500; i++) {
longString += ' ';
expectedString += '%20';
}
t.equal(
utils.encode(longString),
expectedString,
'encodes a long string'
);
t.equal(
utils.encode('\x28\x29'),
'%28%29',
'encodes parens normally'
);
t.equal(
utils.encode('\x28\x29', null, null, null, 'RFC1738'),
'()',
'does not encode parens in RFC1738'
);
// todo RFC1738 format
t.equal(
utils.encode('Āက豈'),
'%C4%80%E1%80%80%EF%A4%80',
'encodes multibyte chars'
);
t.equal(
utils.encode('\uD83D \uDCA9'),
'%F0%9F%90%A0%F0%BA%90%80',
'encodes lone surrogates'
);
t.end();
});
test('isBuffer()', function (t) {
forEach([null, undefined, true, false, '', 'abc', 42, 0, NaN, {}, [], function () {}, /a/g], function (x) {
t.equal(utils.isBuffer(x), false, inspect(x) + ' is not a buffer');
});
var fakeBuffer = { constructor: Buffer };
t.equal(utils.isBuffer(fakeBuffer), false, 'fake buffer is not a buffer');
var saferBuffer = SaferBuffer.from('abc');
t.equal(utils.isBuffer(saferBuffer), true, 'SaferBuffer instance is a buffer');
var buffer = Buffer.from && Buffer.alloc ? Buffer.from('abc') : new Buffer('abc');
t.equal(utils.isBuffer(buffer), true, 'real Buffer instance is a buffer');
t.end();
});
test('isRegExp()', function (t) {
t.equal(utils.isRegExp(/a/g), true, 'RegExp is a RegExp');
t.equal(utils.isRegExp(new RegExp('a', 'g')), true, 'new RegExp is a RegExp');
t.equal(utils.isRegExp(new Date()), false, 'Date is not a RegExp');
forEach(v.primitives, function (primitive) {
t.equal(utils.isRegExp(primitive), false, inspect(primitive) + ' is not a RegExp');
});
t.end();
});