const assert = require('assert')

const texme = require('../texme.js')

const MASK_LITERAL = texme.tokenLiteral.MASK

describe('render', function () {

before(function () {

// Ensure that markdown module is loaded.

texme.main()

})

it('markdown', function () {

const input = '*Foo* **Bar** `Baz`'

const expected = '<p><em>Foo</em> <strong>Bar</strong> <code>Baz</code></p>\n'

assert.deepStrictEqual(texme.render(input), expected)

})

it('math', function () {

const input = '$ 1 + 1 = 2 $'

const expected = '<p>$ 1 + 1 = 2 $</p>\n'

assert.deepStrictEqual(texme.render(input), expected)

})

it('mask literal', function () {

const input = MASK_LITERAL

const expected = '<p>' + MASK_LITERAL + '</p>\n'

assert.deepStrictEqual(texme.render(input), expected)

})

it('mixed', function () {

const input = '*Foo* $ 1 + 1 = 2 $ **Bar** $$ 2 + 2 = 4 $$'

const expected = '<p><em>Foo</em> $ 1 + 1 = 2 $ <strong>Bar</strong> ' +

'$$ 2 + 2 = 4 $$</p>\n'

assert.deepStrictEqual(texme.render(input), expected)

})

it('protected math', function () {

const input = '$$ {a}_{1} {a}_{2} $$'

const expected = '<p>$$ {a}_{1} {a}_{2} $$</p>\n'

texme.setOption('protectMath', true)

assert.deepStrictEqual(texme.render(input), expected)

texme.setDefaultOptions()

})

it('unprotected math', function () {

const input = '$$ {a}_{1} {a}_{2} $$'

const expected = '<p>$$ {a}<em>{1} {a}</em>{2} $$</p>\n'

texme.setOption('protectMath', false)

assert.deepStrictEqual(texme.render(input), expected)

texme.setDefaultOptions()

})

it('multiple lines', function () {

const input =

'Binomial Theorem\n' +

'----------------\n' +

'$$ (x + y)^n = \\sum_{k=0}^n {n \\choose k} x^{n - k} y^k $$\n' +

'\n' +

'Exponential Function\n' +

'--------------------\n' +

'\\[ e^x = \\lim_{n \\to \\infty} ' +

'\\left( 1+ \\frac{x}{n} \\right)^n \\]\n'

const expected =

'<h2 id="binomial-theorem">Binomial Theorem</h2>\n' +

'<p>$$ (x + y)^n = \\sum_{k=0}^n {n \\choose k} ' +

'x^{n - k} y^k $$</p>\n' +

'<h2 id="exponential-function">Exponential Function</h2>\n' +

'<p>\\[ e^x = \\lim_{n \\to \\infty} ' +

'\\left( 1+ \\frac{x}{n} \\right)^n \\]</p>\n'

assert.deepStrictEqual(texme.render(input), expected)

})

})