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- var test = require('tape');
- var hasSymbols = require('has-symbols/shams')();
- var utilInspect = require('../util.inspect');
- var repeat = require('string.prototype.repeat');
-
- var inspect = require('..');
-
- test('inspect', function (t) {
- t.plan(5);
-
- var obj = [{ inspect: function xyzInspect() { return '!XYZ¡'; } }, []];
- var stringResult = '[ !XYZ¡, [] ]';
- var falseResult = '[ { inspect: [Function: xyzInspect] }, [] ]';
-
- t.equal(inspect(obj), stringResult);
- t.equal(inspect(obj, { customInspect: true }), stringResult);
- t.equal(inspect(obj, { customInspect: 'symbol' }), falseResult);
- t.equal(inspect(obj, { customInspect: false }), falseResult);
- t['throws'](
- function () { inspect(obj, { customInspect: 'not a boolean or "symbol"' }); },
- TypeError,
- '`customInspect` must be a boolean or the string "symbol"'
- );
- });
-
- test('inspect custom symbol', { skip: !hasSymbols || !utilInspect || !utilInspect.custom }, function (t) {
- t.plan(4);
-
- var obj = { inspect: function stringInspect() { return 'string'; } };
- obj[utilInspect.custom] = function custom() { return 'symbol'; };
-
- var symbolResult = '[ symbol, [] ]';
- var stringResult = '[ string, [] ]';
- var falseResult = '[ { inspect: [Function: stringInspect]' + (utilInspect.custom ? ', [' + inspect(utilInspect.custom) + ']: [Function: custom]' : '') + ' }, [] ]';
-
- var symbolStringFallback = utilInspect.custom ? symbolResult : stringResult;
- var symbolFalseFallback = utilInspect.custom ? symbolResult : falseResult;
-
- t.equal(inspect([obj, []]), symbolStringFallback);
- t.equal(inspect([obj, []], { customInspect: true }), symbolStringFallback);
- t.equal(inspect([obj, []], { customInspect: 'symbol' }), symbolFalseFallback);
- t.equal(inspect([obj, []], { customInspect: false }), falseResult);
- });
-
- test('symbols', { skip: !hasSymbols }, function (t) {
- t.plan(2);
-
- var obj = { a: 1 };
- obj[Symbol('test')] = 2;
- obj[Symbol.iterator] = 3;
- Object.defineProperty(obj, Symbol('non-enum'), {
- enumerable: false,
- value: 4
- });
-
- if (typeof Symbol.iterator === 'symbol') {
- t.equal(inspect(obj), '{ a: 1, [Symbol(test)]: 2, [Symbol(Symbol.iterator)]: 3 }', 'object with symbols');
- t.equal(inspect([obj, []]), '[ { a: 1, [Symbol(test)]: 2, [Symbol(Symbol.iterator)]: 3 }, [] ]', 'object with symbols in array');
- } else {
- // symbol sham key ordering is unreliable
- t.match(
- inspect(obj),
- /^(?:{ a: 1, \[Symbol\(test\)\]: 2, \[Symbol\(Symbol.iterator\)\]: 3 }|{ a: 1, \[Symbol\(Symbol.iterator\)\]: 3, \[Symbol\(test\)\]: 2 })$/,
- 'object with symbols (nondeterministic symbol sham key ordering)'
- );
- t.match(
- inspect([obj, []]),
- /^\[ (?:{ a: 1, \[Symbol\(test\)\]: 2, \[Symbol\(Symbol.iterator\)\]: 3 }|{ a: 1, \[Symbol\(Symbol.iterator\)\]: 3, \[Symbol\(test\)\]: 2 }), \[\] \]$/,
- 'object with symbols in array (nondeterministic symbol sham key ordering)'
- );
- }
- });
-
- test('maxStringLength', function (t) {
- t['throws'](
- function () { inspect('', { maxStringLength: -1 }); },
- TypeError,
- 'maxStringLength must be >= 0, or Infinity, not negative'
- );
-
- var str = repeat('a', 1e8);
-
- t.equal(
- inspect([str], { maxStringLength: 10 }),
- '[ \'aaaaaaaaaa\'... 99999990 more characters ]',
- 'maxStringLength option limits output'
- );
-
- t.equal(
- inspect(['f'], { maxStringLength: null }),
- '[ \'\'... 1 more character ]',
- 'maxStringLength option accepts `null`'
- );
-
- t.equal(
- inspect([str], { maxStringLength: Infinity }),
- '[ \'' + str + '\' ]',
- 'maxStringLength option accepts ∞'
- );
-
- t.end();
- });
-
- test('inspect options', { skip: !utilInspect.custom }, function (t) {
- var obj = {};
- obj[utilInspect.custom] = function () {
- return JSON.stringify(arguments);
- };
- t.equal(
- inspect(obj),
- utilInspect(obj, { depth: 5 }),
- 'custom symbols will use node\'s inspect'
- );
- t.equal(
- inspect(obj, { depth: 2 }),
- utilInspect(obj, { depth: 2 }),
- 'a reduced depth will be passed to node\'s inspect'
- );
- t.equal(
- inspect({ d1: obj }, { depth: 3 }),
- '{ d1: ' + utilInspect(obj, { depth: 2 }) + ' }',
- 'deep objects will receive a reduced depth'
- );
- t.equal(
- inspect({ d1: obj }, { depth: 1 }),
- '{ d1: [Object] }',
- 'unlike nodejs inspect, customInspect will not be used once the depth is exceeded.'
- );
- t.end();
- });
-
- test('inspect URL', { skip: typeof URL === 'undefined' }, function (t) {
- t.match(
- inspect(new URL('https://nodejs.org')),
- /nodejs\.org/, // Different environments stringify it differently
- 'url can be inspected'
- );
- t.end();
- });
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