test: update assert messages to show expected and actual values

uses the same approach as in test-fs-readfile-pipe-large

PR-URL: https://github.com/nodejs/node/pull/19420
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
pull/19823/head
Dave O'Mahony 2018-03-17 16:16:31 -02:30 committed by Trivikram Kamat
parent c60c93cba2
commit 3217c70718
2 changed files with 19 additions and 5 deletions

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@ -0,0 +1,5 @@
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@ -30,8 +30,6 @@ if (common.isWindows || common.isAIX)
const assert = require('assert');
const fs = require('fs');
const dataExpected = fs.readFileSync(__filename, 'utf8');
if (process.argv[2] === 'child') {
fs.readFile('/dev/stdin', function(er, data) {
assert.ifError(er);
@ -40,13 +38,24 @@ if (process.argv[2] === 'child') {
return;
}
const fixtures = require('../common/fixtures');
const filename = fixtures.path('readfile_pipe_test.txt');
const dataExpected = fs.readFileSync(filename).toString();
const exec = require('child_process').exec;
const f = JSON.stringify(__filename);
const node = JSON.stringify(process.execPath);
const cmd = `cat ${f} | ${node} ${f} child`;
const cmd = `cat ${filename} | ${node} ${f} child`;
exec(cmd, function(err, stdout, stderr) {
assert.ifError(err);
assert.strictEqual(stdout, dataExpected, 'it reads the file and outputs it');
assert.strictEqual(stderr, '', 'it does not write to stderr');
assert.strictEqual(
stdout,
dataExpected,
`expected to read: '${dataExpected}' but got: '${stdout}'`);
assert.strictEqual(
stderr,
'',
`expected not to read anything from stderr but got: '${stderr}'`);
console.log('ok');
});