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'use strict';
require('../common');
const {
hijackStdout,
hijackStderr,
restoreStdout,
restoreStderr
} = require('../common/hijackstdio');
const assert = require('assert');
const Console = require('console').Console;
let c, stdout, stderr;
function setup() {
stdout = '';
hijackStdout(function(data) {
stdout += data;
});
stderr = '';
hijackStderr(function(data) {
stderr += data;
});
c = new Console(process.stdout, process.stderr);
}
function teardown() {
restoreStdout();
restoreStderr();
}
// Basic group() functionality
{
setup();
const expectedOut = 'This is the outer level\n' +
' Level 2\n' +
' Level 3\n' +
' Back to level 2\n' +
'Back to the outer level\n' +
'Still at the outer level\n';
const expectedErr = ' More of level 3\n';
c.log('This is the outer level');
c.group();
c.log('Level 2');
c.group();
c.log('Level 3');
c.warn('More of level 3');
c.groupEnd();
c.log('Back to level 2');
c.groupEnd();
c.log('Back to the outer level');
c.groupEnd();
c.log('Still at the outer level');
assert.strictEqual(stdout, expectedOut);
assert.strictEqual(stderr, expectedErr);
teardown();
}
// Group indentation is tracked per Console instance.
{
setup();
const expectedOut = 'No indentation\n' +
'None here either\n' +
' Now the first console is indenting\n' +
'But the second one does not\n';
const expectedErr = '';
const c2 = new Console(process.stdout, process.stderr);
c.log('No indentation');
c2.log('None here either');
c.group();
c.log('Now the first console is indenting');
c2.log('But the second one does not');
assert.strictEqual(stdout, expectedOut);
assert.strictEqual(stderr, expectedErr);
teardown();
}
// Make sure labels work.
{
setup();
const expectedOut = 'This is a label\n' +
' And this is the data for that label\n';
const expectedErr = '';
c.group('This is a label');
c.log('And this is the data for that label');
assert.strictEqual(stdout, expectedOut);
assert.strictEqual(stderr, expectedErr);
teardown();
}
// Check that console.groupCollapsed() is an alias of console.group()
{
setup();
const expectedOut = 'Label\n' +
' Level 2\n' +
' Level 3\n';
const expectedErr = '';
c.groupCollapsed('Label');
c.log('Level 2');
c.groupCollapsed();
c.log('Level 3');
assert.strictEqual(stdout, expectedOut);
assert.strictEqual(stderr, expectedErr);
teardown();
}
// Check that multiline strings and object output are indented properly.
{
setup();
const expectedOut = 'not indented\n' +
' indented\n' +
' also indented\n' +
' {\n' +
" also: 'a',\n" +
" multiline: 'object',\n" +
" should: 'be',\n" +
" indented: 'properly',\n" +
" kthx: 'bai'\n" +
' }\n';
const expectedErr = '';
c.log('not indented');
c.group();
c.log('indented\nalso indented');
c.log({ also: 'a',
multiline: 'object',
should: 'be',
indented: 'properly',
kthx: 'bai' });
assert.strictEqual(stdout, expectedOut);
assert.strictEqual(stderr, expectedErr);
teardown();
}
// Check that the kGroupIndent symbol property is not enumerable
{
const keys = Reflect.ownKeys(console)
.filter((val) => console.propertyIsEnumerable(val))
.map((val) => val.toString());
assert(!keys.includes('Symbol(groupIndent)'),
'groupIndent should not be enumerable');
}