Merge pull request #276 from TimothyGu/to

feat(end/round): make to and toEnd chainable

src/to.js

@@ -22,6 +22,7 @@ function _to(options, file) {
 
   try {
     fs.writeFileSync(file, this.toString(), 'utf8');
+    return this;
   } catch(e) {
     common.error('could not write to file (code '+e.code+'): '+file, true);
   }

src/toEnd.js

@@ -22,6 +22,7 @@ function _toEnd(options, file) {
 
   try {
     fs.appendFileSync(file, this.toString(), 'utf8');
+    return this;
   } catch(e) {
     common.error('could not append to file (code '+e.code+'): '+file, true);
   }

test/to.js

@@ -23,9 +23,12 @@ assert.ok(shell.error());
 // Valids
 //
 
-'hello world'.to('tmp/to1');
+'hello world'.to('tmp/to1').to('tmp/to2');
 var result = shell.cat('tmp/to1');
 assert.equal(shell.error(), null);
 assert.equal(result, 'hello world');
+result = shell.cat('tmp/to2');
+assert.equal(shell.error(), null);
+assert.equal(result, 'hello world');
 
 shell.exit(123);

test/toEnd.js

@@ -22,11 +22,15 @@ assert.ok(shell.error());
 //
 
 assert.equal(fs.existsSync('tmp/toEnd1'), false); //Check file toEnd() creates does not already exist
+assert.equal(fs.existsSync('tmp/toEnd2'), false);
 'hello '.toEnd('tmp/toEnd1');
 assert.equal(fs.existsSync('tmp/toEnd1'), true); //Check that file was created
-'world'.toEnd('tmp/toEnd1'); //Write some more to the file
+'world'.toEnd('tmp/toEnd1').toEnd('tmp/toEnd2'); //Write some more to the file
 var result = shell.cat('tmp/toEnd1');
 assert.equal(shell.error(), null);
 assert.equal(result, 'hello world'); //Check that the result is what we expect
+result = shell.cat('tmp/toEnd2');
+assert.equal(shell.error(), null);
+assert.equal(result, 'world'); //Check that the result is what we expect
 
 shell.exit(123);