mirror of
https://github.com/shelljs/shelljs.git
synced 2026-01-18 16:03:37 +00:00
104 lines
3.6 KiB
JavaScript
104 lines
3.6 KiB
JavaScript
var shell = require('..');
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var assert = require('assert');
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var fs = require('fs');
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shell.config.silent = true;
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shell.rm('-rf', 'tmp');
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shell.mkdir('tmp');
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var result;
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//
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// Invalids
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//
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result = shell.head();
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assert.ok(shell.error());
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assert.equal(result.code, 1);
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assert.equal(fs.existsSync('/asdfasdf'), false); // sanity check
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result = shell.head('/adsfasdf'); // file does not exist
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assert.ok(shell.error());
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assert.equal(result.code, 1);
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//
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// Valids
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//
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var 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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var 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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// simple
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result = shell.head('resources/head/file1.txt');
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assert.equal(shell.error(), null);
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assert.equal(result.code, 0);
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assert.equal(result, topOfFile1.slice(0, 10).join('\n')+'\n');
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// multiple files
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result = shell.head('resources/head/file2.txt', 'resources/head/file1.txt');
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assert.equal(shell.error(), null);
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assert.equal(result.code, 0);
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assert.equal(result, topOfFile2.slice(0, 10).concat(
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topOfFile1.slice(0, 10)
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).join('\n')+'\n');
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// multiple files, array syntax
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result = shell.head(['resources/head/file2.txt', 'resources/head/file1.txt']);
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assert.equal(shell.error(), null);
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assert.equal(result.code, 0);
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assert.equal(result, topOfFile2.slice(0, 10).concat(
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topOfFile1.slice(0, 10)
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).join('\n')+'\n');
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// reading more lines than are in the file (no trailing newline)
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result = shell.head('resources/file2', 'resources/file1');
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assert.equal(shell.error(), null);
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assert.equal(result.code, 0);
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assert.equal(result, 'test2\ntest1'); // these files only have one line (no \n)
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// reading more lines than are in the file (with trailing newline)
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result = shell.head('resources/head/shortfile2', 'resources/head/shortfile1');
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assert.equal(shell.error(), null);
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assert.equal(result.code, 0);
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assert.equal(result, 'short2\nshort1\n'); // these files only have one line (with \n)
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// Globbed file
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result = shell.head('resources/head/file?.txt');
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assert.equal(shell.error(), null);
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assert.equal(result.code, 0);
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assert.equal(result, topOfFile1.slice(0, 10).concat(
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topOfFile2.slice(0, 10)
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).join('\n')+'\n');
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// With `'-n' <num>` option
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result = shell.head('-n', 4, 'resources/head/file2.txt', 'resources/head/file1.txt');
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assert.equal(shell.error(), null);
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assert.equal(result.code, 0);
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assert.equal(result, topOfFile2.slice(0, 4).concat(
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topOfFile1.slice(0, 4)
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).join('\n')+'\n');
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// With `{'-n': <num>}` option
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result = shell.head({'-n': 4}, 'resources/head/file2.txt', 'resources/head/file1.txt');
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assert.equal(shell.error(), null);
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assert.equal(result.code, 0);
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assert.equal(result, topOfFile2.slice(0, 4).concat(
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topOfFile1.slice(0, 4)
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).join('\n')+'\n');
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// negative values (-num) are the same as (numLines - num)
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result = shell.head('-n', -46, 'resources/head/file1.txt');
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assert.equal(shell.error(), null);
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assert.equal(result.code, 0);
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assert.equal(result, 'file1 1\nfile1 2\nfile1 3\nfile1 4\n');
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shell.exit(123);
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