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engine.test.js
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engine.test.js
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var chai = require('chai');
var chalk = require('chalk');
var engine = require('./engine');
var mock = require('mock-require');
var semver = require('semver');
var types = require('conventional-commit-types').types;
var expect = chai.expect;
chai.should();
var defaultOptions = {
types,
maxLineWidth: 100,
maxHeaderWidth: 100
};
var type = 'func';
var scope = 'everything';
var subject = 'testing123';
var longBody =
'a a aa a aa a aa a aa a aa a aa a aa a aa a aa a aa a aa a aa a aa a aa a' +
'a a aa a aa a aa a aa a aa a aa a aa a aa a aa a aa a aa a aa a aa a aa a aa a aa a aa a aa a' +
'a a aa a aa a aa a aa a aa a aa a aa a aa a aa a aa a aa a aa a aa a aa a aa a aa a aa a aa a';
var longBodySplit =
longBody.slice(0, defaultOptions.maxLineWidth).trim() +
'\n' +
longBody
.slice(defaultOptions.maxLineWidth, 2 * defaultOptions.maxLineWidth)
.trim() +
'\n' +
longBody.slice(defaultOptions.maxLineWidth * 2, longBody.length).trim();
var body = 'A quick brown fox jumps over the dog';
var issues = 'a issues is not a person that kicks things';
var longIssues =
'b b bb b bb b bb b bb b bb b bb b bb b bb b bb b bb b bb b bb b bb b bb b' +
'b b bb b bb b bb b bb b bb b bb b bb b bb b bb b bb b bb b bb b bb b bb b bb b bb b bb b bb b' +
'b b bb b bb b bb b bb b bb b bb b bb b bb b bb b bb b bb b bb b bb b bb b bb b bb b bb b bb b';
var breakingChange = 'BREAKING CHANGE: ';
var breaking = 'asdhdfkjhbakjdhjkashd adhfajkhs asdhkjdsh ahshd';
var longIssuesSplit =
longIssues.slice(0, defaultOptions.maxLineWidth).trim() +
'\n' +
longIssues
.slice(defaultOptions.maxLineWidth, defaultOptions.maxLineWidth * 2)
.trim() +
'\n' +
longIssues.slice(defaultOptions.maxLineWidth * 2, longIssues.length).trim();
describe('commit message', function() {
it('only header w/ out scope', function() {
expect(
commitMessage({
type,
subject
})
).to.equal(`${type}: ${subject}`);
});
it('only header w/ scope', function() {
expect(
commitMessage({
type,
scope,
subject
})
).to.equal(`${type}(${scope}): ${subject}`);
});
it('header and body w/ out scope', function() {
expect(
commitMessage({
type,
subject,
body
})
).to.equal(`${type}: ${subject}\n\n${body}`);
});
it('header and body w/ scope', function() {
expect(
commitMessage({
type,
scope,
subject,
body
})
).to.equal(`${type}(${scope}): ${subject}\n\n${body}`);
});
it('header and body w/ uppercase scope', function() {
var upperCaseScope = scope.toLocaleUpperCase();
expect(
commitMessage(
{
type,
scope: upperCaseScope,
subject,
body
},
{
...defaultOptions,
disableScopeLowerCase: true
}
)
).to.equal(`${type}(${upperCaseScope}): ${subject}\n\n${body}`);
});
it('header and body w/ uppercase subject', function() {
var upperCaseSubject = subject.toLocaleUpperCase();
expect(
commitMessage(
{
type,
scope,
subject: upperCaseSubject,
body
},
{
...defaultOptions,
disableSubjectLowerCase: true
}
)
).to.equal(`${type}(${scope}): ${upperCaseSubject}\n\n${body}`);
});
it('header, body and issues w/ out scope', function() {
expect(
commitMessage({
type,
subject,
body,
issues
})
).to.equal(`${type}: ${subject}\n\n${body}\n\n${issues}`);
});
it('header, body and issues w/ scope', function() {
expect(
commitMessage({
type,
scope,
subject,
body,
issues
})
).to.equal(`${type}(${scope}): ${subject}\n\n${body}\n\n${issues}`);
});
it('header, body and long issues w/ out scope', function() {
expect(
commitMessage({
type,
subject,
body,
issues: longIssues
})
).to.equal(`${type}: ${subject}\n\n${body}\n\n${longIssuesSplit}`);
});
it('header, body and long issues w/ scope', function() {
expect(
commitMessage({
type,
scope,
subject,
body,
issues: longIssues
})
).to.equal(
`${type}(${scope}): ${subject}\n\n${body}\n\n${longIssuesSplit}`
);
});
it('header and long body w/ out scope', function() {
expect(
commitMessage({
type,
subject,
body: longBody
})
).to.equal(`${type}: ${subject}\n\n${longBodySplit}`);
});
it('header and long body w/ scope', function() {
expect(
commitMessage({
type,
scope,
subject,
body: longBody
})
).to.equal(`${type}(${scope}): ${subject}\n\n${longBodySplit}`);
});
it('header, long body and issues w/ out scope', function() {
expect(
commitMessage({
type,
subject,
body: longBody,
issues
})
).to.equal(`${type}: ${subject}\n\n${longBodySplit}\n\n${issues}`);
});
it('header, long body and issues w/ scope', function() {
expect(
commitMessage({
type,
scope,
subject,
body: longBody,
issues
})
).to.equal(
`${type}(${scope}): ${subject}\n\n${longBodySplit}\n\n${issues}`
);
});
it('header, long body and long issues w/ out scope', function() {
expect(
commitMessage({
type,
subject,
body: longBody,
issues: longIssues
})
).to.equal(`${type}: ${subject}\n\n${longBodySplit}\n\n${longIssuesSplit}`);
});
it('header, long body and long issues w/ scope', function() {
expect(
commitMessage({
type,
scope,
subject,
body: longBody,
issues: longIssues
})
).to.equal(
`${type}(${scope}): ${subject}\n\n${longBodySplit}\n\n${longIssuesSplit}`
);
});
it('header, long body, breaking change, and long issues w/ scope', function() {
expect(
commitMessage({
type,
scope,
subject,
body: longBody,
breaking,
issues: longIssues
})
).to.equal(
`${type}(${scope}): ${subject}\n\n${longBodySplit}\n\n${breakingChange}${breaking}\n\n${longIssuesSplit}`
);
});
it('header, long body, breaking change (with prefix entered), and long issues w/ scope', function() {
expect(
commitMessage({
type,
scope,
subject,
body: longBody,
breaking: `${breakingChange}${breaking}`,
issues: longIssues
})
).to.equal(
`${type}(${scope}): ${subject}\n\n${longBodySplit}\n\n${breakingChange}${breaking}\n\n${longIssuesSplit}`
);
});
});
describe('validation', function() {
it('subject exceeds max length', function() {
expect(() =>
commitMessage({
type,
scope,
subject: longBody
})
).to.throw(
'length must be less than or equal to ' +
`${defaultOptions.maxLineWidth - type.length - scope.length - 4}`
);
});
it('empty subject', function() {
expect(() =>
commitMessage({
type,
scope,
subject: ''
})
).to.throw('subject is required');
});
});
describe('defaults', function() {
it('defaultType default', function() {
expect(questionDefault('type')).to.be.undefined;
});
it('defaultType options', function() {
expect(
questionDefault('type', customOptions({ defaultType: type }))
).to.equal(type);
});
it('defaultScope default', function() {
expect(questionDefault('scope')).to.be.undefined;
});
it('defaultScope options', () =>
expect(
questionDefault('scope', customOptions({ defaultScope: scope }))
).to.equal(scope));
it('defaultSubject default', () =>
expect(questionDefault('subject')).to.be.undefined);
it('defaultSubject options', function() {
expect(
questionDefault(
'subject',
customOptions({
defaultSubject: subject
})
)
).to.equal(subject);
});
it('defaultBody default', function() {
expect(questionDefault('body')).to.be.undefined;
});
it('defaultBody options', function() {
expect(
questionDefault('body', customOptions({ defaultBody: body }))
).to.equal(body);
});
it('defaultIssues default', function() {
expect(questionDefault('issues')).to.be.undefined;
});
it('defaultIssues options', function() {
expect(
questionDefault(
'issues',
customOptions({
defaultIssues: issues
})
)
).to.equal(issues);
});
it('disableScopeLowerCase default', function() {
expect(questionDefault('disableScopeLowerCase')).to.be.undefined;
});
it('disableSubjectLowerCase default', function() {
expect(questionDefault('disableSubjectLowerCase')).to.be.undefined;
});
});
describe('prompts', function() {
it('commit subject prompt for commit w/ out scope', function() {
expect(questionPrompt('subject', { type })).to.contain(
`(max ${defaultOptions.maxHeaderWidth - type.length - 2} chars)`
);
});
it('commit subject prompt for commit w/ scope', function() {
expect(questionPrompt('subject', { type, scope })).to.contain(
`(max ${defaultOptions.maxHeaderWidth -
type.length -
scope.length -
4} chars)`
);
});
});
describe('transformation', function() {
it('subject w/ character count', () =>
expect(
questionTransformation('subject', {
type,
subject
})
).to.equal(chalk.green(`(${subject.length}) ${subject}`)));
it('long subject w/ character count', () =>
expect(
questionTransformation('subject', {
type,
subject: longBody
})
).to.equal(chalk.red(`(${longBody.length}) ${longBody}`)));
});
describe('filter', function() {
it('lowercase scope', () =>
expect(questionFilter('scope', 'HelloMatt')).to.equal('hellomatt'));
it('lowerfirst subject trimmed and trailing dots striped', () =>
expect(questionFilter('subject', ' A subject... ')).to.equal(
'a subject'
));
});
describe('when', function() {
it('breaking by default', () =>
expect(questionWhen('breaking', {})).to.be.undefined);
it('breaking when isBreaking', () =>
expect(
questionWhen('breaking', {
isBreaking: true
})
).to.be.true);
it('issues by default', () =>
expect(questionWhen('issues', {})).to.be.undefined);
it('issues when isIssueAffected', () =>
expect(
questionWhen('issues', {
isIssueAffected: true
})
).to.be.true);
});
describe('commitlint config header-max-length', function() {
//commitlint config parser only supports Node 6.0.0 and higher
if (semver.gte(process.version, '6.0.0')) {
function mockOptions(headerMaxLength) {
var options = undefined;
mock('./engine', function(opts) {
options = opts;
});
if (headerMaxLength) {
mock('cosmiconfig', function() {
return {
load: function(cwd) {
return {
filepath: cwd + '/.commitlintrc.js',
config: {
rules: {
'header-max-length': [2, 'always', headerMaxLength]
}
}
};
}
};
});
}
mock.reRequire('./index');
try {
return mock
.reRequire('@commitlint/load')()
.then(function() {
return options;
});
} catch (err) {
return Promise.resolve(options);
}
}
afterEach(function() {
delete require.cache[require.resolve('./index')];
delete require.cache[require.resolve('@commitlint/load')];
delete process.env.CZ_MAX_HEADER_WIDTH;
mock.stopAll();
});
it('with no environment or commitizen config override', function() {
return mockOptions(72).then(function(options) {
expect(options).to.have.property('maxHeaderWidth', 72);
});
});
it('with environment variable override', function() {
process.env.CZ_MAX_HEADER_WIDTH = '105';
return mockOptions(72).then(function(options) {
expect(options).to.have.property('maxHeaderWidth', 105);
});
});
it('with commitizen config override', function() {
mock('commitizen', {
configLoader: {
load: function() {
return {
maxHeaderWidth: 103
};
}
}
});
return mockOptions(72).then(function(options) {
expect(options).to.have.property('maxHeaderWidth', 103);
});
});
} else {
//Node 4 doesn't support commitlint so the config value should remain the same
it('default value for Node 4', function() {
return mockOptions(72).then(function(options) {
expect(options).to.have.property('maxHeaderWidth', 100);
});
});
}
});
function commitMessage(answers, options) {
options = options || defaultOptions;
var result = null;
engine(options).prompter(
{
prompt: function(questions) {
return {
then: function(finalizer) {
processQuestions(questions, answers, options);
finalizer(answers);
}
};
}
},
function(message) {
result = message;
}
);
return result;
}
function processQuestions(questions, answers, options) {
for (var i in questions) {
var question = questions[i];
var answer = answers[question.name];
var validation =
answer === undefined || !question.validate
? true
: question.validate(answer, answers);
if (validation !== true) {
throw new Error(
validation ||
`Answer '${answer}' to question '${question.name}' was invalid`
);
}
if (question.filter && answer) {
answers[question.name] = question.filter(answer);
}
}
}
function getQuestions(options) {
options = options || defaultOptions;
var result = null;
engine(options).prompter({
prompt: function(questions) {
result = questions;
return {
then: function() {}
};
}
});
return result;
}
function getQuestion(name, options) {
options = options || defaultOptions;
var questions = getQuestions(options);
for (var i in questions) {
if (questions[i].name === name) {
return questions[i];
}
}
return false;
}
function questionPrompt(name, answers, options) {
options = options || defaultOptions;
var question = getQuestion(name, options);
return question.message && typeof question.message === 'string'
? question.message
: question.message(answers);
}
function questionTransformation(name, answers, options) {
options = options || defaultOptions;
var question = getQuestion(name, options);
return (
question.transformer &&
question.transformer(answers[name], answers, options)
);
}
function questionFilter(name, answer, options) {
options = options || defaultOptions;
var question = getQuestion(name, options);
return (
question.filter &&
question.filter(typeof answer === 'string' ? answer : answer[name])
);
}
function questionDefault(name, options) {
options = options || defaultOptions;
var question = getQuestion(name, options);
return question.default;
}
function questionWhen(name, answers, options) {
options = options || defaultOptions;
var question = getQuestion(name, options);
return question.when(answers);
}
function customOptions(options) {
Object.keys(defaultOptions).forEach(key => {
if (options[key] === undefined) {
options[key] = defaultOptions[key];
}
});
return options;
}