import fs from 'fs';
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import postcss from 'postcss';
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import test from 'ava';
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import {diffLines} from 'diff';
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import chalk from 'chalk';
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import plugin from '../';
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function getDiff (left, right) {
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let msg = ['\n'];
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diffLines(left, right).forEach(item => {
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if (item.added || item.removed) {
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let text = item.value
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.replace('\n', '\u00b6\n')
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.replace('\ufeff', '[[BOM]]');
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msg.push(chalk[item.added ? 'green' : 'red'](text));
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} else {
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let value = item.value.replace('\ufeff', '[[BOM]]');
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let lines = value.split('\n');
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// max line count for each item
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let keepLines = 6;
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// lines to be omitted
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let omitLines = lines.length - keepLines;
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if (lines.length > keepLines) {
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lines.splice(
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Math.floor(keepLines / 2),
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omitLines,
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chalk.gray('(...' + omitLines + ' lines omitted...)')
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);
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}
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msg.concat(lines);
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}
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});
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msg.push('\n');
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return msg.map(line => ' ' + line).join('');
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}
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function read (file) {
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return fs.readFileSync(__dirname + `/fixtures/${file}.css`, {encoding: 'utf-8'});
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}
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function exec (t, input) {
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let output = read(`${input}.post`);
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return postcss([ plugin() ]).process(read(input))
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.then( result => {
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if (result.css !== output) {
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t.fail(getDiff(result.css, output));
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}
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t.deepEqual(result.warnings().length, 0);
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});
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}
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test(
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'Overridden @keyframes should be discarded correctly.',
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exec,
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'keyframes'
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);
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test(
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'Overridden @counter-style should be discarded correctly.',
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exec,
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'counter-style'
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);
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