clean up log file deletion and add unit test

app/js/ResourceWriter.js

@@ -201,10 +201,6 @@ module.exports = ResourceWriter = {
             // knitr cache
             should_delete = false
           }
-          if (path.match(/^output.(stdout|stderr)$/)) {
-            // latexmk output
-            should_delete = true
-          }
           if (path.match(/^output-.*/)) {
             // Tikz cached figures (default case)
             should_delete = false
@@ -235,7 +231,9 @@ module.exports = ResourceWriter = {
             path === 'output.pdf' ||
             path === 'output.dvi' ||
             path === 'output.log' ||
-            path === 'output.xdv'
+            path === 'output.xdv' ||
+            path === 'output.stdout' ||
+            path === 'output.stderr'
           ) {
             should_delete = true
           }

test/unit/js/ResourceWriterTests.js

@@ -230,6 +230,12 @@ describe('ResourceWriter', function() {
         {
           path: '_markdown_main/30893013dec5d869a415610079774c2f.md.tex',
           type: 'tex'
+        },
+        {
+          path: 'output.stdout'
+        },
+        {
+          path: 'output.stderr'
         }
       ]
       this.resources = 'mock-resources'
@@ -256,7 +262,19 @@ describe('ResourceWriter', function() {
         .should.equal(true)
     })
 
-    it('should delete the extra files', function() {
+    it('should delete the stdout log file', function () {
+      return this.ResourceWriter._deleteFileIfNotDirectory
+        .calledWith(path.join(this.basePath, 'output.stdout'))
+        .should.equal(true)
+    })
+
+    it('should delete the stderr log file', function () {
+      return this.ResourceWriter._deleteFileIfNotDirectory
+        .calledWith(path.join(this.basePath, 'output.stderr'))
+        .should.equal(true)
+    })
+
+    it('should delete the extra files', function () {
       return this.ResourceWriter._deleteFileIfNotDirectory
         .calledWith(path.join(this.basePath, 'extra/file.tex'))
         .should.equal(true)