122 lines
3.8 KiB
JavaScript
122 lines
3.8 KiB
JavaScript
'use strict';
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/*
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======== A Handy Little Nodeunit Reference ========
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https://github.com/caolan/nodeunit
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Test methods:
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test.expect(numAssertions)
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test.done()
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Test assertions:
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test.ok(value, [message])
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test.equal(actual, expected, [message])
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test.notEqual(actual, expected, [message])
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test.deepEqual(actual, expected, [message])
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test.notDeepEqual(actual, expected, [message])
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test.strictEqual(actual, expected, [message])
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test.notStrictEqual(actual, expected, [message])
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test.throws(block, [error], [message])
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test.doesNotThrow(block, [error], [message])
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test.ifError(value)
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*/
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var fs = require('fs');
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var exec = require('child_process').exec;
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var _which = require('which').sync;
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function which(command) {
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try {
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_which(command);
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return command;
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} catch (err) {
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return false;
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}
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}
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// Look for grep first (any OS). If not found (but on Windows) look for find,
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// which is Windows' horribly crippled grep alternative.
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var grep = which('grep') || process.platform === 'win32' && which('find');
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exports['exit'] = {
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setUp: function(done) {
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this.origCwd = process.cwd();
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process.chdir('test/fixtures');
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done();
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},
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tearDown: function(done) {
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process.chdir(this.origCwd);
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done();
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},
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'grep': function(test) {
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test.expect(1);
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// Many unit tests depend on this.
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test.ok(grep, 'A suitable "grep" or "find" program was not found in the PATH.');
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test.done();
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},
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// The rest of the tests are built dynamically, to keep things sane.
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};
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// A few helper functions.
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function normalizeLineEndings(s) {
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return s.replace(/\r?\n/g, '\n');
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}
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// Capture command output, normalizing captured stdout to unix file endings.
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function run(command, callback) {
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exec(command, function(error, stdout) {
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callback(error ? error.code : 0, normalizeLineEndings(stdout));
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});
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}
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// Read a fixture file, normalizing file contents to unix file endings.
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function fixture(filename) {
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return normalizeLineEndings(String(fs.readFileSync(filename)));
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}
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function buildTests() {
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// Build individual unit tests for command output.
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var counts = [10, 100, 1000];
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var outputs = [' stdout stderr', ' stdout', ' stderr'];
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var pipes = ['', ' | ' + grep + ' "std"'];
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counts.forEach(function(count) {
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outputs.forEach(function(output) {
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pipes.forEach(function(pipe) {
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var command = 'node log.js 0 ' + count + output + ' 2>&1' + pipe;
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exports['exit']['output (' + command + ')'] = function(test) {
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test.expect(2);
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run(command, function(code, actual) {
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var expected = fixture(count + output.replace(/ /g, '-') + '.txt');
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// Sometimes, the actual file lines are out of order on Windows.
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// But since the point of this lib is to drain the buffer and not
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// guarantee output order, we only test the length.
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test.equal(actual.length, expected.length, 'should be the same length.');
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// The "fail" lines in log.js should NOT be output!
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test.ok(actual.indexOf('fail') === -1, 'should not output after exit is called.');
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test.done();
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});
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};
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});
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});
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});
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// Build individual unit tests for exit codes.
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var codes = [0, 1, 123];
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codes.forEach(function(code) {
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var command = 'node log.js ' + code + ' 10 stdout stderr';
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exports['exit']['exit code (' + command + ')'] = function(test) {
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test.expect(1);
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run(command, function(actual) {
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// The specified exit code should be passed through.
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test.equal(actual, code, 'should exit with ' + code + ' error code.');
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test.done();
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});
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};
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});
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}
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// Don't bother building tests if grep wasn't found, otherwise everything will
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// fail and the error will get lost.
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if (grep) {
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buildTests();
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}
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