hexo/node_modules/cliui/test/cliui.js

350 lines
9.2 KiB
JavaScript

/* global describe, it */
require('chai').should()
var cliui = require('../')
describe('cliui', function () {
describe('div', function () {
it("wraps text at 'width' if a single column is given", function () {
var ui = cliui({
width: 10
})
ui.div('i am a string that should be wrapped')
ui.toString().split('\n').forEach(function (row) {
row.length.should.be.lte(10)
})
})
it('evenly divides text across columns if multiple columns are given', function () {
var ui = cliui({
width: 40
})
ui.div(
{text: 'i am a string that should be wrapped', width: 15},
'i am a second string that should be wrapped',
'i am a third string that should be wrapped'
)
// total width of all columns is <=
// the width cliui is initialized with.
ui.toString().split('\n').forEach(function (row) {
row.length.should.be.lte(40)
})
// it should wrap each column appropriately.
var expected = [
'i am a string i am a i am a third',
'that should be second string that',
'wrapped string that should be',
' should be wrapped',
' wrapped'
]
ui.toString().split('\n').should.eql(expected)
})
it('allows for a blank row to be appended', function () {
var ui = cliui({
width: 40
})
ui.div()
// it should wrap each column appropriately.
var expected = ['']
ui.toString().split('\n').should.eql(expected)
})
})
describe('_columnWidths', function () {
it('uses same width for each column by default', function () {
var ui = cliui({
width: 40
}),
widths = ui._columnWidths([{}, {}, {}])
widths[0].should.equal(13)
widths[1].should.equal(13)
widths[2].should.equal(13)
})
it('divides width over remaining columns if first column has width specified', function () {
var ui = cliui({
width: 40
}),
widths = ui._columnWidths([{width: 20}, {}, {}])
widths[0].should.equal(20)
widths[1].should.equal(10)
widths[2].should.equal(10)
})
it('divides width over remaining columns if middle column has width specified', function () {
var ui = cliui({
width: 40
}),
widths = ui._columnWidths([{}, {width: 10}, {}])
widths[0].should.equal(15)
widths[1].should.equal(10)
widths[2].should.equal(15)
})
it('keeps track of remaining width if multiple columns have width specified', function () {
var ui = cliui({
width: 40
}),
widths = ui._columnWidths([{width: 20}, {width: 12}, {}])
widths[0].should.equal(20)
widths[1].should.equal(12)
widths[2].should.equal(8)
})
it('uses a sane default if impossible widths are specified', function () {
var ui = cliui({
width: 40
}),
widths = ui._columnWidths([{width: 30}, {width: 30}, {padding: [0, 2, 0, 1]}])
widths[0].should.equal(30)
widths[1].should.equal(30)
widths[2].should.equal(4)
})
})
describe('alignment', function () {
it('allows a column to be right aligned', function () {
var ui = cliui({
width: 40
})
ui.div(
'i am a string',
{text: 'i am a second string', align: 'right'},
'i am a third string that should be wrapped'
)
// it should right-align the second column.
var expected = [
'i am a stringi am a secondi am a third',
' stringstring that',
' should be',
' wrapped'
]
ui.toString().split('\n').should.eql(expected)
})
it('allows a column to be center aligned', function () {
var ui = cliui({
width: 60
})
ui.div(
'i am a string',
{text: 'i am a second string', align: 'center', padding: [0, 2, 0, 2]},
'i am a third string that should be wrapped'
)
// it should right-align the second column.
var expected = [
'i am a string i am a second i am a third string',
' string that should be',
' wrapped'
]
ui.toString().split('\n').should.eql(expected)
})
})
describe('padding', function () {
it('handles left/right padding', function () {
var ui = cliui({
width: 40
})
ui.div(
{text: 'i have padding on my left', padding: [0, 0, 0, 4]},
{text: 'i have padding on my right', padding: [0, 2, 0, 0], align: 'center'},
{text: 'i have no padding', padding: [0, 0, 0, 0]}
)
// it should add left/right padding to columns.
var expected = [
' i have i have i have no',
' padding padding on padding',
' on my my right',
' left'
]
ui.toString().split('\n').should.eql(expected)
})
it('handles top/bottom padding', function () {
var ui = cliui({
width: 40
})
ui.div(
'i am a string',
{text: 'i am a second string', padding: [2, 0, 0, 0]},
{text: 'i am a third string that should be wrapped', padding: [0, 0, 1, 0]}
)
// it should add top/bottom padding to second
// and third columns.
var expected = [
'i am a string i am a third',
' string that',
' i am a secondshould be',
' string wrapped',
''
]
ui.toString().split('\n').should.eql(expected)
})
})
describe('wrap', function () {
it('allows wordwrap to be disabled', function () {
var ui = cliui({
wrap: false
})
ui.div(
{text: 'i am a string', padding: [0, 1, 0, 0]},
{text: 'i am a second string', padding: [0, 2, 0, 0]},
{text: 'i am a third string that should not be wrapped', padding: [0, 0, 0, 2]}
)
ui.toString().should.equal('i am a string i am a second string i am a third string that should not be wrapped')
})
})
describe('span', function () {
it('appends the next row to the end of the prior row if it fits', function () {
var ui = cliui({
width: 40
})
ui.span(
{text: 'i am a string that will be wrapped', width: 30}
)
ui.div(
{text: ' [required] [default: 99]', align: 'right'}
)
var expected = [
'i am a string that will be',
'wrapped [required] [default: 99]'
]
ui.toString().split('\n').should.eql(expected)
})
it('does not append the string if it does not fit on the prior row', function () {
var ui = cliui({
width: 40
})
ui.span(
{text: 'i am a string that will be wrapped', width: 30}
)
ui.div(
{text: 'i am a second row', align: 'left'}
)
var expected = [
'i am a string that will be',
'wrapped',
'i am a second row'
]
ui.toString().split('\n').should.eql(expected)
})
it('always appends text to prior span if wrap is disabled', function () {
var ui = cliui({
wrap: false,
width: 40
})
ui.span(
{text: 'i am a string that will be wrapped', width: 30}
)
ui.div(
{text: 'i am a second row', align: 'left', padding: [0, 0, 0, 3]}
)
ui.div('a third line')
var expected = [
'i am a string that will be wrapped i am a second row',
'a third line'
]
ui.toString().split('\n').should.eql(expected)
})
})
describe('layoutDSL', function () {
it('turns tab into multiple columns', function () {
var ui = cliui({
width: 60
})
ui.div(
' <regex> \tmy awesome regex\n <my second thing> \tanother row\t a third column'
)
var expected = [
' <regex> my awesome regex',
' <my second thing> another row a third column'
]
ui.toString().split('\n').should.eql(expected)
})
it('turns newline into multiple rows', function () {
var ui = cliui({
width: 40
})
ui.div(
'Usage: $0\n <regex>\t my awesome regex\n <glob>\t my awesome glob\t [required]'
)
var expected = [
'Usage: $0',
' <regex> my awesome regex',
' <glob> my awesome [required]',
' glob'
]
ui.toString().split('\n').should.eql(expected)
})
it('does not apply DSL if wrap is false', function () {
var ui = cliui({
width: 40,
wrap: false
})
ui.div(
'Usage: $0\ttwo\tthree'
)
ui.toString().should.eql('Usage: $0\ttwo\tthree')
})
})
})