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spec.js
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spec.js
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const levelheaded = require('.');
describe('levelheaded', () => {
const log = console.log;
afterEach(() => {
console.log = log;
});
it('Should execute "action" by level', () => {
let result;
const tester = levelheaded({
levels: [ 'a', 'b', 'c' ],
minimal: 'b',
action: (...args) => { result = args; },
});
tester.a('A');
expect(result).not.to.deep.equal([ 'A' ]);
tester.b('B');
expect(result).to.deep.equal([ 'B' ]);
tester.c('C');
expect(result).to.deep.equal([ 'C' ]);
});
it('Should use log levels by default', () => {
let result;
console.log = (...args) => {
result = args;
return log(...args);
};
const tester = levelheaded();
tester.info('done');
expect(result).to.deep.equal([ 'done' ]);
});
it('Should run on an object context containing current log level', () => {
let result;
const tester = levelheaded({ action: function() {
result = this;
} });
tester.warn('somwthing');
expect(result.level).to.equal('warn');
});
it('Should expose default level methods', () => {
const tester = levelheaded();
[
tester.debug,
tester.verbose,
tester.info,
tester.warn,
tester.error,
tester.critical,
].forEach(fn => expect(fn).to.be.a('function'));
});
it('Should extend existing object', () => {
const object = { nolevel: () => null };
levelheaded({ object });
expect(object.nolevel).to.be.a('function');
expect(object.debug).to.be.a('function');
});
it('Should use custom noop', () => {
let result;
const tester = levelheaded({
minimal: 'warn',
noop: (...args) => { result = args; },
});
tester.error('B');
expect(result).to.not.deep.equal([ 'B' ]);
tester.info('A');
expect(result).to.deep.equal([ 'A' ]);
});
});