MACHIN

24/node_modules/object-inspect/test/inspect.js

@@ -0,0 +1,139 @@
+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();
+});