mirror of
https://github.com/shelljs/shelljs.git
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bfd06fa096
Adds the -B (before context), -A (after context), and -C (before+after context) options to grep. Example usage: ``` grep -B <num> [args...] grep -A <num> [args...] ```
417 lines
10 KiB
JavaScript
417 lines
10 KiB
JavaScript
const fs = require('fs');
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const test = require('ava');
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const shell = require('..');
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const utils = require('./utils/utils');
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test.beforeEach(t => {
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t.context.tmp = utils.getTempDir();
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shell.config.resetForTesting();
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shell.cp('-r', 'test/resources', t.context.tmp);
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});
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test.afterEach.always(t => {
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shell.rm('-rf', t.context.tmp);
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});
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//
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// Invalids
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//
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test('no args', t => {
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const result = shell.grep();
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t.truthy(shell.error());
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t.is(result.code, 2);
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t.is(shell.errorCode(), 2);
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});
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test('too few args', t => {
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const result = shell.grep(/asdf/g); // too few args
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t.truthy(shell.error());
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t.is(result.code, 2);
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});
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test('no such file', t => {
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t.falsy(fs.existsSync('/asdfasdf')); // sanity check
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const result = shell.grep(/asdf/g, '/asdfasdf'); // no such file
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t.truthy(shell.error());
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t.is(result.stderr, 'grep: no such file or directory: /asdfasdf');
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t.is(result.code, 2);
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});
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test('if at least one file is missing, this should be an error', t => {
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t.falsy(fs.existsSync('asdfasdf')); // sanity check
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t.truthy(fs.existsSync(`${t.context.tmp}/file1`)); // sanity check
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const result = shell.grep(/asdf/g, `${t.context.tmp}/file1`, 'asdfasdf');
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t.truthy(shell.error());
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t.is(result.stderr, 'grep: no such file or directory: asdfasdf');
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t.is(result.code, 2);
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});
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test("multiple files, one doesn't exist, one doesn't match", t => {
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const result = shell.grep(/oogabooga/, 'test/resources/file1.txt',
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'test/resources/filedoesnotexist.txt');
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t.truthy(shell.error());
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t.is(result.code, 2);
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});
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test('-A option, negative value', t => {
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const result = shell.grep('-A', -2, 'test*', 'test/resources/grep/file3');
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t.truthy(shell.error());
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t.is(result.code, 2);
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t.is(result.stderr, 'grep: -2: invalid context length argument');
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});
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test('-B option, negative value', t => {
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const result = shell.grep('-B', -3, 'test*', 'test/resources/grep/file3');
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t.truthy(shell.error());
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t.is(result.code, 2);
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t.is(result.stderr, 'grep: -3: invalid context length argument');
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});
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test('-C option, negative value', t => {
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const result = shell.grep('-C', -1, 'test*', 'test/resources/grep/file3');
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t.truthy(shell.error());
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t.is(result.code, 2);
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t.is(result.stderr, 'grep: -1: invalid context length argument');
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});
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//
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// Valids
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//
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test('basic', t => {
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const result = shell.grep('line', 'test/resources/a.txt');
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t.falsy(shell.error());
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t.is(result.split('\n').length - 1, 4);
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});
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test('-v option', t => {
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const result = shell.grep('-v', 'line', 'test/resources/a.txt');
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t.falsy(shell.error());
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t.is(result.split('\n').length - 1, 8);
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});
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test('matches one line', t => {
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const result = shell.grep('line one', 'test/resources/a.txt');
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t.falsy(shell.error());
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t.is(result.toString(), 'This is line one\n');
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});
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test('multiple files', t => {
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const result = shell.grep(/test/, 'test/resources/file1.txt',
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'test/resources/file2.txt');
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t.falsy(shell.error());
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t.is(result.toString(), 'test1\ntest2\n');
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});
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test('multiple files, array syntax', t => {
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const result = shell.grep(/test/, ['test/resources/file1.txt',
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'test/resources/file2.txt']);
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t.falsy(shell.error());
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t.is(result.toString(), 'test1\ntest2\n');
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});
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test('multiple files, glob syntax, * for file name', t => {
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const result = shell.grep(/test/, 'test/resources/file*.txt');
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t.falsy(shell.error());
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t.truthy(result.toString(), 'test1\ntest2\n');
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});
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test('multiple files, glob syntax, * for directory name', t => {
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const result = shell.grep(/test/, 'test/r*/file*.txt');
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t.falsy(shell.error());
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t.is(result.toString(), 'test1\ntest2\n');
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});
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test('multiple files, double-star glob', t => {
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const result = shell.grep(/test/, 'test/resources/**/file*.js');
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t.falsy(shell.error());
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t.is(result.toString(), 'test\ntest\ntest\ntest\n');
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});
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test('one file, * in regex', t => {
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const result = shell.grep(/alpha*beta/, 'test/resources/grep/file');
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t.falsy(shell.error());
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t.is(result.toString(), 'alphaaaaaaabeta\nalphbeta\n');
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});
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test('one file, * in string-regex', t => {
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const result = shell.grep('alpha*beta', 'test/resources/grep/file');
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t.falsy(shell.error());
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t.is(result.toString(), 'alphaaaaaaabeta\nalphbeta\n');
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});
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test('one file, * in regex, make sure * is not globbed', t => {
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const result = shell.grep(/l*\.js/, 'test/resources/grep/file');
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t.falsy(shell.error());
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t.is(result.toString(), 'this line ends in.js\nlllllllllllllllll.js\n');
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});
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test('one file, * in string-regex, make sure * is not globbed', t => {
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const result = shell.grep('l*\\.js', 'test/resources/grep/file');
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t.falsy(shell.error());
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t.is(result.toString(), 'this line ends in.js\nlllllllllllllllll.js\n');
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});
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test("one file, pattern doesn't match", t => {
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const result = shell.grep('notfoundstring', 'test/resources/grep/file');
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t.truthy(shell.error());
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t.is(result.toString(), '');
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t.is(result.stdout, '');
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// TODO(#900): "grep: " isn't really the correct stderr output, but we need a
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// non-empty string so `shell.error()` is truthy.
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t.is(result.stderr, 'grep: ');
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t.is(result.code, 1);
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});
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test('-l option', t => {
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const result = shell.grep('-l', 'test1', 'test/resources/file1', 'test/resources/file2',
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'test/resources/file1.txt');
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t.falsy(shell.error());
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t.truthy(result.match(/file1(\n|$)/));
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t.truthy(result.match(/file1.txt/));
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t.falsy(result.match(/file2.txt/));
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t.is(result.split('\n').length - 1, 2);
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});
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test('-i option', t => {
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const result = shell.grep('-i', 'test', 'test/resources/grep/case1', 'test/resources/grep/case1.txt',
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'test/resources/grep/case1.js');
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t.falsy(shell.error());
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t.is(result.split('\n').length - 1, 3);
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});
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test('-n option', t => {
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const result = shell.grep('-n', /alpha*beta/, 'test/resources/grep/file');
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t.falsy(shell.error());
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t.is(result.toString(), '1:alphaaaaaaabeta\n3:alphbeta\n');
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});
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test('the pattern looks like an option', t => {
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const result = shell.grep('--', '-v', 'test/resources/grep/file2');
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t.falsy(shell.error());
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t.is(result.toString(), '-v\n-vv\n');
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});
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//
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// Before & after contexts
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//
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test('-B option', t => {
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const result = shell.grep('-B', 3, 'test*', 'test/resources/grep/file3');
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t.falsy(shell.error());
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t.is(
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result.toString(),
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'line1\n' +
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'line2 test line\n' +
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'line3 test line\n' +
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'--\n' +
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'line7\n' +
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'line8\n' +
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'line9\n' +
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'line10 test line\n' +
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'--\n' +
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'line12\n' +
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'line13\n' +
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'line14\n' +
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'line15 test line\n',
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);
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});
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test('-B option, -n option', t => {
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const result = shell.grep('-nB', 3, 'test*', 'test/resources/grep/file3');
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t.falsy(shell.error());
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t.is(
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result.toString(),
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'1-line1\n' +
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'2:line2 test line\n' +
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'3:line3 test line\n' +
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'--\n' +
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'7-line7\n' +
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'8-line8\n' +
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'9-line9\n' +
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'10:line10 test line\n' +
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'--\n' +
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'12-line12\n' +
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'13-line13\n' +
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'14-line14\n' +
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'15:line15 test line\n',
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);
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});
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test('-A option', t => {
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const result = shell.grep('-A', 2, 'test*', 'test/resources/grep/file3');
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t.falsy(shell.error());
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t.is(
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result.toString(),
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'line2 test line\n' +
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'line3 test line\n' +
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'line4\n' +
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'line5\n' +
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'--\n' +
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'line10 test line\n' +
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'line11\n' +
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'line12\n' +
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'--\n' +
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'line15 test line\n',
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);
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});
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test('-A option, -B option', t => {
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const result = shell.grep(
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{ '-A': 2, '-B': 3 },
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'test*',
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'test/resources/grep/file3',
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);
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t.falsy(shell.error());
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t.is(
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result.toString(),
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'line1\n' +
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'line2 test line\n' +
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'line3 test line\n' +
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'line4\n' +
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'line5\n' +
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'--\n' +
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'line7\n' +
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'line8\n' +
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'line9\n' +
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'line10 test line\n' +
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'line11\n' +
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'line12\n' +
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'line13\n' +
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'line14\n' +
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'line15 test line\n',
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);
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});
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test('-A option, -B option, -n option', t => {
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const result = shell.grep(
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{ '-n': true, '-A': 2, '-B': 3 },
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'test*',
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'test/resources/grep/file3',
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);
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t.falsy(shell.error());
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t.is(
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result.toString(),
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'1-line1\n' +
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'2:line2 test line\n' +
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'3:line3 test line\n' +
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'4-line4\n' +
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'5-line5\n' +
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'--\n' +
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'7-line7\n' +
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'8-line8\n' +
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'9-line9\n' +
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'10:line10 test line\n' +
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'11-line11\n' +
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'12-line12\n' +
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'13-line13\n' +
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'14-line14\n' +
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'15:line15 test line\n',
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);
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});
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test('-C option', t => {
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const result = shell.grep('-C', 3, 'test*', 'test/resources/grep/file3');
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t.falsy(shell.error());
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t.is(
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result.toString(),
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'line1\n' +
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'line2 test line\n' +
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'line3 test line\n' +
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'line4\n' +
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'line5\n' +
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'line6\n' +
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'line7\n' +
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'line8\n' +
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'line9\n' +
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'line10 test line\n' +
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'line11\n' +
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'line12\n' +
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'line13\n' +
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'line14\n' +
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'line15 test line\n',
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);
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});
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test('-C option, small value', t => {
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const result = shell.grep('-C', 1, 'test*', 'test/resources/grep/file3');
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t.falsy(shell.error());
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t.is(
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result.toString(),
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'line1\n' +
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'line2 test line\n' +
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'line3 test line\n' +
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'line4\n' +
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'--\n' +
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'line9\n' +
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'line10 test line\n' +
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'line11\n' +
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'--\n' +
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'line14\n' +
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'line15 test line\n',
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);
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});
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test('-C option, large value', t => {
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const result = shell.grep('-C', 100, 'test*', 'test/resources/grep/file3');
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t.falsy(shell.error());
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t.is(
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result.toString(),
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'line1\n' +
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'line2 test line\n' +
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'line3 test line\n' +
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'line4\n' +
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'line5\n' +
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'line6\n' +
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'line7\n' +
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'line8\n' +
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'line9\n' +
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'line10 test line\n' +
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'line11\n' +
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'line12\n' +
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'line13\n' +
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'line14\n' +
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'line15 test line\n',
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);
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});
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test('-C option, add line separators', t => {
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const result = shell.grep('-C', 0, 'test*', 'test/resources/grep/file3');
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t.falsy(shell.error());
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t.is(
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result.toString(),
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'line2 test line\n' +
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'line3 test line\n' +
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'--\n' +
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'line10 test line\n' +
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'--\n' +
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'line15 test line\n',
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);
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});
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test('-C option, -n option', t => {
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const result = shell.grep('-nC', 3, 'test*', 'test/resources/grep/file3');
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t.falsy(shell.error());
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t.is(
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result.toString(),
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'1-line1\n' +
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'2:line2 test line\n' +
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'3:line3 test line\n' +
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'4-line4\n' +
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'5-line5\n' +
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'6-line6\n' +
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'7-line7\n' +
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'8-line8\n' +
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'9-line9\n' +
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'10:line10 test line\n' +
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'11-line11\n' +
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'12-line12\n' +
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'13-line13\n' +
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'14-line14\n' +
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'15:line15 test line\n',
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);
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});
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