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a7d6df5f6d
Adds two new methods to src/common.js, common.statFollowLinks and common.statNoFollowLinks, which wrap fs.statSync and fs.lstatSync, respectively. This change is meant to improve readability and clarify intent. * Add common.statFollowLinks and common.statNoFollowLinks * Replace fs.statSync and fs.lstatSync in source files
138 lines
4.2 KiB
JavaScript
138 lines
4.2 KiB
JavaScript
import fs from 'fs';
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import test from 'ava';
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import shell from '..';
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import common from '../src/common';
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shell.config.silent = true;
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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.head();
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t.truthy(shell.error());
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t.is(result.code, 1);
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});
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test('file does not exist', t => {
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t.falsy(fs.existsSync('/asdfasdf')); // sanity check
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const result = shell.head('/asdfasdf'); // file does not exist
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t.truthy(shell.error());
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t.is(result.code, 1);
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t.is(result.stderr, 'head: no such file or directory: /asdfasdf');
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});
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test('directory', t => {
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t.truthy(common.statFollowLinks('test/resources/').isDirectory()); // sanity check
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const result = shell.head('test/resources/');
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t.truthy(shell.error());
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t.is(result.code, 1);
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t.is(result.stderr, "head: error reading 'test/resources/': Is a directory");
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});
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//
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// Valids
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//
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const topOfFile1 = ['file1 1', 'file1 2', 'file1 3', 'file1 4', 'file1 5',
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'file1 6', 'file1 7', 'file1 8', 'file1 9', 'file1 10',
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'file1 11', 'file1 12', 'file1 13', 'file1 14', 'file1 15',
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'file1 16', 'file1 17', 'file1 18', 'file1 19', 'file1 20'];
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const topOfFile2 = ['file2 1', 'file2 2', 'file2 3', 'file2 4', 'file2 5',
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'file2 6', 'file2 7', 'file2 8', 'file2 9', 'file2 10',
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'file2 11', 'file2 12', 'file2 13', 'file2 14', 'file2 15',
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'file2 16', 'file2 17', 'file2 18', 'file2 19', 'file2 20'];
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test('simple', t => {
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const result = shell.head('test/resources/head/file1.txt');
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t.falsy(shell.error());
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t.is(result.code, 0);
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t.is(result.toString(), topOfFile1.slice(0, 10).join('\n') + '\n');
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});
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test('multiple files', t => {
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const result = shell.head('test/resources/head/file2.txt',
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'test/resources/head/file1.txt');
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t.falsy(shell.error());
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t.is(result.code, 0);
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t.is(result.toString(), topOfFile2
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.slice(0, 10)
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.concat(topOfFile1.slice(0, 10))
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.join('\n') + '\n');
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});
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test('multiple files, array syntax', t => {
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const result = shell.head(['test/resources/head/file2.txt',
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'test/resources/head/file1.txt']);
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t.falsy(shell.error());
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t.is(result.code, 0);
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t.is(result.toString(), topOfFile2
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.slice(0, 10)
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.concat(topOfFile1.slice(0, 10))
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.join('\n') + '\n');
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});
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test('reading more lines than are in the file (no trailing newline)', t => {
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const result = shell.head('test/resources/file2', 'test/resources/file1');
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t.falsy(shell.error());
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t.is(result.code, 0);
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t.is(result.toString(), 'test2\ntest1'); // these files only have one line (no \n)
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});
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test('reading more lines than are in the file (with trailing newline)', t => {
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const result = shell.head('test/resources/head/shortfile2',
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'test/resources/head/shortfile1');
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t.falsy(shell.error());
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t.is(result.code, 0);
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t.is(result.toString(), 'short2\nshort1\n'); // these files only have one line (with \n)
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});
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test('Globbed file', t => {
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const result = shell.head('test/resources/head/file?.txt');
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t.falsy(shell.error());
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t.is(result.code, 0);
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t.is(result.toString(), topOfFile1
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.slice(0, 10)
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.concat(topOfFile2.slice(0, 10))
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.join('\n') + '\n');
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});
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test('With `\'-n\' <num>` option', t => {
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const result = shell.head('-n', 4, 'test/resources/head/file2.txt',
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'test/resources/head/file1.txt');
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t.falsy(shell.error());
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t.is(result.code, 0);
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t.is(result.toString(), topOfFile2
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.slice(0, 4)
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.concat(topOfFile1.slice(0, 4))
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.join('\n') + '\n');
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});
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test('With `{\'-n\': <num>}` option', t => {
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const result = shell.head({ '-n': 4 }, 'test/resources/head/file2.txt',
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'test/resources/head/file1.txt');
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t.falsy(shell.error());
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t.is(result.code, 0);
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t.is(result.toString(), topOfFile2
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.slice(0, 4)
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.concat(topOfFile1.slice(0, 4))
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.join('\n') + '\n');
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});
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test('negative values (-num) are the same as (numLines - num)', t => {
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const result = shell.head('-n', -46, 'test/resources/head/file1.txt');
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t.falsy(shell.error());
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t.is(result.code, 0);
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t.is(result.toString(), 'file1 1\nfile1 2\nfile1 3\nfile1 4\n');
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});
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test('right-hand side of a pipe', t => {
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const result = shell.cat('test/resources/head/file1.txt').head();
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t.falsy(shell.error());
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t.is(result.code, 0);
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t.is(result.toString(), topOfFile1.slice(0, 10).join('\n') + '\n');
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});
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