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'use strict';
var assert = require('assert');
var util = require('util');
var join = require('path').join;
var fs = require('fs');
var common = require('../common');
common.refreshTmpDir();
var repl = require('repl');
// A stream to push an array into a REPL
function ArrayStream() {
this.run = function(data) {
var self = this;
data.forEach(function(line) {
self.emit('data', line + '\n');
});
};
}
util.inherits(ArrayStream, require('stream').Stream);
ArrayStream.prototype.readable = true;
ArrayStream.prototype.writable = true;
ArrayStream.prototype.resume = function() {};
ArrayStream.prototype.write = function() {};
var works = [['inner.one'], 'inner.o'];
var putIn = new ArrayStream();
var testMe = repl.start('', putIn);
var testFile = [
'var top = function() {',
'var inner = {one:1};'
];
var saveFileName = join(common.tmpDir, 'test.save.js');
// input some data
putIn.run(testFile);
// save it to a file
putIn.run(['.save ' + saveFileName]);
// the file should have what I wrote
assert.equal(fs.readFileSync(saveFileName, 'utf8'), testFile.join('\n') + '\n');
// make sure that the REPL data is "correct"
// so when I load it back I know I'm good
testMe.complete('inner.o', function(error, data) {
assert.deepEqual(data, works);
});
// clear the REPL
putIn.run(['.clear']);
// Load the file back in
putIn.run(['.load ' + saveFileName]);
// make sure that the REPL data is "correct"
testMe.complete('inner.o', function(error, data) {
assert.deepEqual(data, works);
});
// clear the REPL
putIn.run(['.clear']);
var loadFile = join(common.tmpDir, 'file.does.not.exist');
// should not break
putIn.write = function(data) {
// make sure I get a failed to load message and not some crazy error
assert.equal(data, 'Failed to load:' + loadFile + '\n');
// eat me to avoid work
putIn.write = function() {};
};
putIn.run(['.load ' + loadFile]);
// clear the REPL
putIn.run(['.clear']);
// NUL (\0) is disallowed in filenames in UNIX-like operating systems and
// Windows so we can use that to test failed saves
const invalidFileName = join(common.tmpDir, '\0\0\0\0\0');
// should not break
putIn.write = function(data) {
// make sure I get a failed to save message and not some other error
assert.equal(data, 'Failed to save:' + invalidFileName + '\n');
// reset to no-op
putIn.write = function() {};
};
// save it to a file
putIn.run(['.save ' + invalidFileName]);